Actually think this is not standard UV (UV-A) which cheaper emitters generate. UV-C are a very specific part and I have been trying for years to get one for "nuking" FPGAs and EPROMs. Last I checked if you could get one they range from £9 to £44 for multiple mW source @ Mouser. 30 day lead time alas and MOQ .
Incidentally I did find that the emitter sold with X-brand orange UV glue is fairly powerful compared to my nail lamp: set the glue in seconds and nail polish in minutes comparable wity the entire lamp but from a single emitter. I've since mounted it in a proper ally reflective casing with low melting point alloy and Epoxy to increase efficiency and add extra cooling as the diode became warm even at minimal current. -A ________________________________________ From: volt-nuts <[email protected]> on behalf of Tom Knox <[email protected]> Sent: 26 March 2020 20:01 To: Discussion of precise voltage measurement Subject: Re: [volt-nuts] Solartron 7081 Hi Rick; I have not experimented yet but recently purchase a 10 watt UV flashlight on either eBay or Amazon for something like 20USD. I thought is would be useful for EPROM's as well as a number of other applications such as epoxy curing. So I have not tested this yet but my assumption is a 10 watt LED is a lot stronger then most UV sources using older technology aside from high powered HID lamps. On a related topic, I wonder if some of these raw 100 watt+ UV LED modules would be effective at killing COVID19. I have seen movies where actors stand surrounded in UV light when leaving a bio-hazard lab but have no idea if this has real scientific merit. Cheers; Tom Knox "Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein ________________________________ From: volt-nuts <[email protected]> on behalf of Don@True-Cal <[email protected]> Sent: Thursday, March 26, 2020 12:58 PM To: 'Discussion of precise voltage measurement' <[email protected]> Subject: Re: [volt-nuts] Solartron 7081 Hi Rick, I would recommend the MiniPro TL866CS USB Universal Programmer, about $65. I been using an earlier version for years. The software is ok and very complete for device selection. I use it the burn/re-burn/update various implementations of PROMs. You may also want to get a UV EPROM eraser for some of the earlier stuff. Search on eBay for Ultraviolet UV EPROM eraser and it's a blue box with timer for $16. Instruments like the HP 3456A, 3458A all have EPROMs you have to erase before re-programming or use new blank ones. Regards, Don -----Original Message----- From: volt-nuts <[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.ou >> tlook.com >> > >> >> 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.
