Frank, I'm glad you did reply. I checked my spec sheet and the ROMs do require 25v VPP and the programmer caps at 18v. I've requested to cancel the shipment but likely to late. I will go back on the hunt for the 25v VPP.
Thanks Rick > > > > ---------- Forwarded message ---------- > From: Rick Bale <[email protected]> > To: [email protected] > Cc: > Bcc: > Date: Fri, 27 Mar 2020 19:47:07 -0400 > Subject: Re: [volt-nuts] volt-nuts Digest, Vol 124, Issue 5 > David, I went to double check if I physically have 2564 or 2764 and I > discovered all the ROMs were in the wrong spots but not backwards like the > ram chips earlier. Wow. I corrected my TMS2564JS ROMs according to what > looked like original stickers. I rebooted and had for the first time a > continuous beep. The LEDs all stayed on with a dead screen. I shut it > off. On second boot the beep was gone but the front panel was the same. > Overall no improvement. The physical chip numbers match the schematic's > part number. > > I ordered the MiniPro TL866CS USB in the Plus version to burn the ROMs. It > will arrive on 4/1. Is it worth it to erase/reprogram the same ROM or > should I just replace/program them. > > Rick > > > > > ------------------------------------------- > > > > Message: 1 > > Date: Fri, 27 Mar 2020 10:22:27 -0000 > > From: "David C. Partridge" <[email protected]> > > To: "'Discussion of precise voltage measurement'" > > <[email protected]> > > Subject: Re: [volt-nuts] Solartron 7081 > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset="us-ascii" > > > > You'll find the ROM images here: > > < > > > https://groups.io/g/Solartron_Schlumberger_Equipment/files/Solartron%207071 > > %20and%207081 > > < > https://groups.io/g/Solartron_Schlumberger_Equipment/files/Solartron%207071%20and%207081 > > > > > > > > > Depending on exactly which CPU board you have you need either TMS2564 > > (early > > boards) or TMS2764 (late boards) EPROMS > > > > David > > > > > > > > > > ------------------------------ > > > > Message: 2 > > Date: Fri, 27 Mar 2020 10:24:24 +0000 > > From: Andre <[email protected]> > > To: Discussion of precise voltage measurement > > <[email protected]> > > Subject: Re: [volt-nuts] Solartron 7081 > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Maybe contact your local health authority to see if they can make use of > > them? > > One big problem is that these are in short supply. > > ________________________________________ > > From: volt-nuts <[email protected]> on behalf of J. L. > > Trantham <[email protected]> > > Sent: 27 March 2020 00:25 > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > I also have UV EPROM erasers. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > J. > > L. > > Trantham > > Sent: Thursday, March 26, 2020 6:50 PM > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > Rick, > > > > Where are you located? > > > > I have a couple 7081's and the ability to read, archive, and program most > > any EPROM you need, assuming I have the EPROM. > > > > >From your email, I think you need the TMS2564. It's been a few years > > since > > I have opened a 7081 to see how many and what specifically the EPROM's > are. > > > > Happy to help if I can. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > > Rick > > Bale > > Sent: Thursday, March 26, 2020 12:42 PM > > To: [email protected] > > Subject: Re: [volt-nuts] Solartron 7081 > > > > I installed all the 7081's static ram chips and of course no joy. It > > wouldn't be a worth while repair if it was hard! I double checked the +5v > > and +12v power rails again and that's still looking good. All LEDs just > > stay on with no display like it's hanging up very early in the boot up > > sequence. > > > > Seems like the next step is to replace the eproms chips. I believe I can > > find these online, but I will have to program them. Where do I start? I > > need to invest in a reader/writer. We live in a Windows 10 world. I can > > run it in DOS if I had to or even in a earlier version of windows in a > > virtual session. I'd really like to read the old chips as well and > compare > > it to what I'm seeing with saved images that are available from xdevs, > etc. > > > > Does anyone have a recommendation for an economical way to enter the > eprom > > world? I've seen reader/writers that are over $1000 and ones for $39 and > > everything in between. Besides confirming it can read the TMS2564 chips, > > is there specific criteria or features I should be looking for in the > > reader/writer? > > > > Thanks all, Rick > > > > On Mon, Mar 16, 2020 at 6:45 AM Rick Bale <[email protected]> wrote: > > > > > I've order 6 ICs straight away. > > > Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM > > > > > > These look to be direct replacements. > > > > > > Rick > > > > > > > > > > > > > > > On Sun, Mar 15, 2020 at 12:00 PM <[email protected]> > > wrote: > > > > > >> Send volt-nuts mailing list submissions to > > >> [email protected] > > >> > > >> To subscribe or unsubscribe via the World Wide Web, visit > > >> > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> or, via email, send a message with subject or body 'help' to > > >> [email protected] > > >> > > >> You can reach the person managing the list at > > >> [email protected] > > >> > > >> When replying, please edit your Subject line so it is more specific > > >> than "Re: Contents of volt-nuts digest..." > > >> > > >> > > >> Today's Topics: > > >> > > >> 1. Solartron 7081 (Rick Bale) > > >> 2. Re: Solartron 7081 (Bruce Griffiths) > > >> 3. Re: Solartron 7081 (Shaun Merrigan) > > >> > > >> > > >> ---------------------------------------------------------------------- > > >> > > >> Message: 1 > > >> Date: Sat, 14 Mar 2020 18:05:38 -0400 > > >> From: Rick Bale <[email protected]> > > >> To: [email protected] > > >> Subject: [volt-nuts] Solartron 7081 > > >> Message-ID: <[email protected]> > > >> Content-Type: text/plain; charset=utf-8 > > >> > > >> Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > >> This one will be tough for me as it looks like I need to spend a lot > of > > >> time working through the logic. Not my strong skill. > > >> > > >> Rick > > >> > > >> > > >> > > >> ------------------------------ > > >> > > >> Message: 2 > > >> Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT) > > >> From: Bruce Griffiths <[email protected]> > > >> To: Discussion of precise voltage measurement > > >> <[email protected]> > > >> Subject: Re: [volt-nuts] Solartron 7081 > > >> Message-ID: <[email protected]> > > >> Content-Type: text/plain; charset=UTF-8 > > >> > > >> If plugging the memory chips in backwards means their power supply > > >> connections were reversed, those memory chips are likely toast. > > >> > > >> Bruce > > >> > On 15 March 2020 at 11:05 Rick Bale <[email protected]> wrote: > > >> > > > >> > > > >> > Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > > >> > This one will be tough for me as it looks like I need to spend a lot > > of > > >> time working through the logic. Not my strong skill. > > >> > > > >> > Rick > > >> > > > >> > _______________________________________________ > > >> > volt-nuts mailing list -- [email protected] > > >> > To unsubscribe, go to > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> > and follow the instructions there. > > >> > > >> > > >> > > >> ------------------------------ > > >> > > >> Message: 3 > > >> Date: Sat, 14 Mar 2020 23:17:38 +0000 > > >> From: Shaun Merrigan <[email protected]> > > >> To: Discussion of precise voltage measurement > > >> <[email protected]> > > >> Subject: Re: [volt-nuts] Solartron 7081 > > >> Message-ID: > > >> < > > >> > > > > > mwhpr22mb01426f76421b8001e6791b0ada...@mwhpr22mb0142.namprd22.prod.outlook.c > > om > > >> > > > >> > > >> Content-Type: text/plain; charset="utf-8" > > >> > > >> Rick, > > >> > > >> ROM images for this meter are readily available on XDevs or in the > > >> archives of the Solartron (group on groups.io), so you can easily > burn > > >> new ROMS as you need. > > >> There are some excellent threads on the 7081 and 7071 on the eevblog > > >> forum which are certainly worth reading. > > >> > > >> Shaun Merrigan > > >> > > >> -----Original Message----- > > >> From: volt-nuts <[email protected]> On Behalf Of Rick > > Bale > > >> Sent: Saturday, March 14, 2020 16:06 > > >> To: [email protected] > > >> Subject: [volt-nuts] Solartron 7081 > > >> > > >> Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > >> This one will be tough for me as it looks like I need to spend a lot > of > > >> time working through the logic. Not my strong skill. > > >> > > >> Rick > > >> > > >> _______________________________________________ > > >> volt-nuts mailing list -- [email protected] To unsubscribe, go > > to > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> and follow the instructions there. > > >> > > >> ------------------------------ > > >> > > >> Subject: Digest Footer > > >> > > >> _______________________________________________ > > >> volt-nuts mailing list > > >> [email protected] > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> > > >> > > >> ------------------------------ > > >> > > >> End of volt-nuts Digest, Vol 124, Issue 1 > > >> ***************************************** > > >> > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > > > > > ------------------------------ > > > > Message: 3 > > Date: Fri, 27 Mar 2020 07:23:50 -0500 > > From: "J. L. Trantham" <[email protected]> > > To: "'Discussion of precise voltage measurement'" > > <[email protected]> > > Subject: Re: [volt-nuts] Solartron 7081 > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset="us-ascii" > > > > It can accommodate only about 6-8 EPROMs at a time and it takes about an > > hour to erase them. Not really designed for 'high volume'. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > > Andre > > Sent: Friday, March 27, 2020 5:24 AM > > To: Discussion of precise voltage measurement > > Subject: Re: [volt-nuts] Solartron 7081 > > > > Maybe contact your local health authority to see if they can make use of > > them? > > One big problem is that these are in short supply. > > ________________________________________ > > From: volt-nuts <[email protected]> on behalf of J. L. > > Trantham <[email protected]> > > Sent: 27 March 2020 00:25 > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > I also have UV EPROM erasers. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > J. > > L. > > Trantham > > Sent: Thursday, March 26, 2020 6:50 PM > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > Rick, > > > > Where are you located? > > > > I have a couple 7081's and the ability to read, archive, and program most > > any EPROM you need, assuming I have the EPROM. > > > > >From your email, I think you need the TMS2564. It's been a few years > > since > > I have opened a 7081 to see how many and what specifically the EPROM's > are. > > > > Happy to help if I can. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > > Rick > > Bale > > Sent: Thursday, March 26, 2020 12:42 PM > > To: [email protected] > > Subject: Re: [volt-nuts] Solartron 7081 > > > > I installed all the 7081's static ram chips and of course no joy. It > > wouldn't be a worth while repair if it was hard! I double checked the +5v > > and +12v power rails again and that's still looking good. All LEDs just > > stay on with no display like it's hanging up very early in the boot up > > sequence. > > > > Seems like the next step is to replace the eproms chips. I believe I can > > find these online, but I will have to program them. Where do I start? I > > need to invest in a reader/writer. We live in a Windows 10 world. I can > > run it in DOS if I had to or even in a earlier version of windows in a > > virtual session. I'd really like to read the old chips as well and > compare > > it to what I'm seeing with saved images that are available from xdevs, > etc. > > > > Does anyone have a recommendation for an economical way to enter the > eprom > > world? I've seen reader/writers that are over $1000 and ones for $39 and > > everything in between. Besides confirming it can read the TMS2564 chips, > > is there specific criteria or features I should be looking for in the > > reader/writer? > > > > Thanks all, Rick > > > > On Mon, Mar 16, 2020 at 6:45 AM Rick Bale <[email protected]> wrote: > > > > > I've order 6 ICs straight away. > > > Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM > > > > > > These look to be direct replacements. > > > > > > Rick > > > > > > > > > > > > > > > On Sun, Mar 15, 2020 at 12:00 PM <[email protected]> > > wrote: > > > > > >> Send volt-nuts mailing list submissions to > > >> [email protected] > > >> > > >> To subscribe or unsubscribe via the World Wide Web, visit > > >> > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> or, via email, send a message with subject or body 'help' to > > >> [email protected] > > >> > > >> You can reach the person managing the list at > > >> [email protected] > > >> > > >> When replying, please edit your Subject line so it is more specific > > >> than "Re: Contents of volt-nuts digest..." > > >> > > >> > > >> Today's Topics: > > >> > > >> 1. Solartron 7081 (Rick Bale) > > >> 2. Re: Solartron 7081 (Bruce Griffiths) > > >> 3. Re: Solartron 7081 (Shaun Merrigan) > > >> > > >> > > >> ---------------------------------------------------------------------- > > >> > > >> Message: 1 > > >> Date: Sat, 14 Mar 2020 18:05:38 -0400 > > >> From: Rick Bale <[email protected]> > > >> To: [email protected] > > >> Subject: [volt-nuts] Solartron 7081 > > >> Message-ID: <[email protected]> > > >> Content-Type: text/plain; charset=utf-8 > > >> > > >> Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > >> This one will be tough for me as it looks like I need to spend a lot > of > > >> time working through the logic. Not my strong skill. > > >> > > >> Rick > > >> > > >> > > >> > > >> ------------------------------ > > >> > > >> Message: 2 > > >> Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT) > > >> From: Bruce Griffiths <[email protected]> > > >> To: Discussion of precise voltage measurement > > >> <[email protected]> > > >> Subject: Re: [volt-nuts] Solartron 7081 > > >> Message-ID: <[email protected]> > > >> Content-Type: text/plain; charset=UTF-8 > > >> > > >> If plugging the memory chips in backwards means their power supply > > >> connections were reversed, those memory chips are likely toast. > > >> > > >> Bruce > > >> > On 15 March 2020 at 11:05 Rick Bale <[email protected]> wrote: > > >> > > > >> > > > >> > Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > > >> > This one will be tough for me as it looks like I need to spend a lot > > of > > >> time working through the logic. Not my strong skill. > > >> > > > >> > Rick > > >> > > > >> > _______________________________________________ > > >> > volt-nuts mailing list -- [email protected] > > >> > To unsubscribe, go to > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> > and follow the instructions there. > > >> > > >> > > >> > > >> ------------------------------ > > >> > > >> Message: 3 > > >> Date: Sat, 14 Mar 2020 23:17:38 +0000 > > >> From: Shaun Merrigan <[email protected]> > > >> To: Discussion of precise voltage measurement > > >> <[email protected]> > > >> Subject: Re: [volt-nuts] Solartron 7081 > > >> Message-ID: > > >> < > > >> > > > > > mwhpr22mb01426f76421b8001e6791b0ada...@mwhpr22mb0142.namprd22.prod.outlook.c > > om > > >> > > > >> > > >> Content-Type: text/plain; charset="utf-8" > > >> > > >> Rick, > > >> > > >> ROM images for this meter are readily available on XDevs or in the > > >> archives of the Solartron (group on groups.io), so you can easily > burn > > >> new ROMS as you need. > > >> There are some excellent threads on the 7081 and 7071 on the eevblog > > >> forum which are certainly worth reading. > > >> > > >> Shaun Merrigan > > >> > > >> -----Original Message----- > > >> From: volt-nuts <[email protected]> On Behalf Of Rick > > Bale > > >> Sent: Saturday, March 14, 2020 16:06 > > >> To: [email protected] > > >> Subject: [volt-nuts] Solartron 7081 > > >> > > >> Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > >> This one will be tough for me as it looks like I need to spend a lot > of > > >> time working through the logic. Not my strong skill. > > >> > > >> Rick > > >> > > >> _______________________________________________ > > >> volt-nuts mailing list -- [email protected] To unsubscribe, go > > to > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> and follow the instructions there. > > >> > > >> ------------------------------ > > >> > > >> Subject: Digest Footer > > >> > > >> _______________________________________________ > > >> volt-nuts mailing list > > >> [email protected] > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> > > >> > > >> ------------------------------ > > >> > > >> End of volt-nuts Digest, Vol 124, Issue 1 > > >> ***************************************** > > >> > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > > > > > ------------------------------ > > > > Message: 4 > > Date: Fri, 27 Mar 2020 12:36:05 +0000 > > From: Andre <[email protected]> > > To: Discussion of precise voltage measurement > > <[email protected]> > > Subject: Re: [volt-nuts] Solartron 7081 > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Better than nothing. I am thinking about using them to sterilize > > glassware, 96 well plates etc. > > Also useful for making control vials as sterility can be guaranteed > unlike > > other methods. > > > > Larger units with high capacity can indeed be used, the other possibility > > is mounting the tube > > on a rotary platform with a small battery pack over the items to be > > treated. > > Also this can be combined with direct feedback of UV intensity and > > reflection so as not to overdrive > > the tube and ensure verification that the items are sterile. > > > > -Andre > > ________________________________________ > > From: volt-nuts <[email protected]> on behalf of J. L. > > Trantham <[email protected]> > > Sent: 27 March 2020 12:23 > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > It can accommodate only about 6-8 EPROMs at a time and it takes about an > > hour to erase them. Not really designed for 'high volume'. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > > Andre > > Sent: Friday, March 27, 2020 5:24 AM > > To: Discussion of precise voltage measurement > > Subject: Re: [volt-nuts] Solartron 7081 > > > > Maybe contact your local health authority to see if they can make use of > > them? > > One big problem is that these are in short supply. > > ________________________________________ > > From: volt-nuts <[email protected]> on behalf of J. L. > > Trantham <[email protected]> > > Sent: 27 March 2020 00:25 > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > I also have UV EPROM erasers. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > J. > > L. > > Trantham > > Sent: Thursday, March 26, 2020 6:50 PM > > To: 'Discussion of precise voltage measurement' > > Subject: Re: [volt-nuts] Solartron 7081 > > > > Rick, > > > > Where are you located? > > > > I have a couple 7081's and the ability to read, archive, and program most > > any EPROM you need, assuming I have the EPROM. > > > > >From your email, I think you need the TMS2564. It's been a few years > > since > > I have opened a 7081 to see how many and what specifically the EPROM's > are. > > > > Happy to help if I can. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf Of > > Rick > > Bale > > Sent: Thursday, March 26, 2020 12:42 PM > > To: [email protected] > > Subject: Re: [volt-nuts] Solartron 7081 > > > > I installed all the 7081's static ram chips and of course no joy. It > > wouldn't be a worth while repair if it was hard! I double checked the +5v > > and +12v power rails again and that's still looking good. All LEDs just > > stay on with no display like it's hanging up very early in the boot up > > sequence. > > > > Seems like the next step is to replace the eproms chips. I believe I can > > find these online, but I will have to program them. Where do I start? I > > need to invest in a reader/writer. We live in a Windows 10 world. I can > > run it in DOS if I had to or even in a earlier version of windows in a > > virtual session. I'd really like to read the old chips as well and > compare > > it to what I'm seeing with saved images that are available from xdevs, > etc. > > > > Does anyone have a recommendation for an economical way to enter the > eprom > > world? I've seen reader/writers that are over $1000 and ones for $39 and > > everything in between. Besides confirming it can read the TMS2564 chips, > > is there specific criteria or features I should be looking for in the > > reader/writer? > > > > Thanks all, Rick > > > > On Mon, Mar 16, 2020 at 6:45 AM Rick Bale <[email protected]> wrote: > > > > > I've order 6 ICs straight away. > > > Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM > > > > > > These look to be direct replacements. > > > > > > Rick > > > > > > > > > > > > > > > On Sun, Mar 15, 2020 at 12:00 PM <[email protected]> > > wrote: > > > > > >> Send volt-nuts mailing list submissions to > > >> [email protected] > > >> > > >> To subscribe or unsubscribe via the World Wide Web, visit > > >> > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> or, via email, send a message with subject or body 'help' to > > >> [email protected] > > >> > > >> You can reach the person managing the list at > > >> [email protected] > > >> > > >> When replying, please edit your Subject line so it is more specific > > >> than "Re: Contents of volt-nuts digest..." > > >> > > >> > > >> Today's Topics: > > >> > > >> 1. Solartron 7081 (Rick Bale) > > >> 2. Re: Solartron 7081 (Bruce Griffiths) > > >> 3. Re: Solartron 7081 (Shaun Merrigan) > > >> > > >> > > >> ---------------------------------------------------------------------- > > >> > > >> Message: 1 > > >> Date: Sat, 14 Mar 2020 18:05:38 -0400 > > >> From: Rick Bale <[email protected]> > > >> To: [email protected] > > >> Subject: [volt-nuts] Solartron 7081 > > >> Message-ID: <[email protected]> > > >> Content-Type: text/plain; charset=utf-8 > > >> > > >> Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > >> This one will be tough for me as it looks like I need to spend a lot > of > > >> time working through the logic. Not my strong skill. > > >> > > >> Rick > > >> > > >> > > >> > > >> ------------------------------ > > >> > > >> Message: 2 > > >> Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT) > > >> From: Bruce Griffiths <[email protected]> > > >> To: Discussion of precise voltage measurement > > >> <[email protected]> > > >> Subject: Re: [volt-nuts] Solartron 7081 > > >> Message-ID: <[email protected]> > > >> Content-Type: text/plain; charset=UTF-8 > > >> > > >> If plugging the memory chips in backwards means their power supply > > >> connections were reversed, those memory chips are likely toast. > > >> > > >> Bruce > > >> > On 15 March 2020 at 11:05 Rick Bale <[email protected]> wrote: > > >> > > > >> > > > >> > Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > > >> > This one will be tough for me as it looks like I need to spend a lot > > of > > >> time working through the logic. Not my strong skill. > > >> > > > >> > Rick > > >> > > > >> > _______________________________________________ > > >> > volt-nuts mailing list -- [email protected] > > >> > To unsubscribe, go to > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> > and follow the instructions there. > > >> > > >> > > >> > > >> ------------------------------ > > >> > > >> Message: 3 > > >> Date: Sat, 14 Mar 2020 23:17:38 +0000 > > >> From: Shaun Merrigan <[email protected]> > > >> To: Discussion of precise voltage measurement > > >> <[email protected]> > > >> Subject: Re: [volt-nuts] Solartron 7081 > > >> Message-ID: > > >> < > > >> > > > > > mwhpr22mb01426f76421b8001e6791b0ada...@mwhpr22mb0142.namprd22.prod.outlook.c > > om > > >> > > > >> > > >> Content-Type: text/plain; charset="utf-8" > > >> > > >> Rick, > > >> > > >> ROM images for this meter are readily available on XDevs or in the > > >> archives of the Solartron (group on groups.io), so you can easily > burn > > >> new ROMS as you need. > > >> There are some excellent threads on the 7081 and 7071 on the eevblog > > >> forum which are certainly worth reading. > > >> > > >> Shaun Merrigan > > >> > > >> -----Original Message----- > > >> From: volt-nuts <[email protected]> On Behalf Of Rick > > Bale > > >> Sent: Saturday, March 14, 2020 16:06 > > >> To: [email protected] > > >> Subject: [volt-nuts] Solartron 7081 > > >> > > >> Hey all, this list has been too quiet. I just took delivery of a > > >> Solartron 7081. It?s starts up with all leds on with no screen, then > > hangs > > >> there. First inspection revealed that two memory chips were in > > backwards. > > >> But correction didn?t fix anything. 5v rail is good on every IC on the > > >> upper logic board. > > >> > > >> This one will be tough for me as it looks like I need to spend a lot > of > > >> time working through the logic. Not my strong skill. > > >> > > >> Rick > > >> > > >> _______________________________________________ > > >> volt-nuts mailing list -- [email protected] To unsubscribe, go > > to > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> and follow the instructions there. > > >> > > >> ------------------------------ > > >> > > >> Subject: Digest Footer > > >> > > >> _______________________________________________ > > >> volt-nuts mailing list > > >> [email protected] > > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > >> > > >> > > >> ------------------------------ > > >> > > >> End of volt-nuts Digest, Vol 124, Issue 1 > > >> ***************************************** > > >> > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > > > > > ------------------------------ > > > > Subject: Digest Footer > > > > _______________________________________________ > > volt-nuts mailing list > > [email protected] > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > > > > > ------------------------------ > > > > End of volt-nuts Digest, Vol 124, Issue 5 > > ***************************************** > > > > _______________________________________________ > volt-nuts mailing list > [email protected] > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
