Re: [M100] Request for info on RS DV Interface
Personal experience agrees with replacing all caps. Look for corroded tracks from cap innards being leaked onto the PCB. Get Outlook for Android<https://aka.ms/ghei36> From: M100 on behalf of Charles Hudson Sent: Tuesday, January 21, 2020 3:07:22 AM To: m100@lists.bitchin100.com Subject: [M100] Request for info on RS DV Interface Thank you to Fugu ME100 for the link to the cini information on ClassicCmp.org. I took off the cover and removed the drives: both are SSDD, but one is a TEAC FD-54B and the other is a TEC, a brand which I had never seen before. In reading up on the DV I came across this posting: http://personalpages.tds.net/~rcarlsen/cbm/msd/REPAIRS/MSD.txt<https://eur03.safelinks.protection.outlook.com/?url=http:%2F%2Fpersonalpages.tds.net%2F~rcarlsen%2Fcbm%2Fmsd%2FREPAIRS%2FMSD.txt=02%7C01%7C%7C5af8503a27b84821c0e508d79db21a78%7C84df9e7fe9f640afb435%7C1%7C0%7C637151260580797886=Eur%2BGFDj0gtbIXV74Ljl8S7YsodcmBEM6WbceYs5R9A%3D=0>. The writer, in reference to the TEC FB-501which is the primary drive in my unit, makes the claim that ALL electrolytic capacitors on these units WILL fail and MUST be replaced. I'm just wondering if the community has experience with this problem and can shed light on the subject. If it has to be I'll do it, just a question of priority. Thanks again, -CH-
Re: [M100] Request for info on RS DV Interface
I have no experience with the DVI drives, but having replaced quite a few caps on model T boards over the years it should be one of the first tasks to keep the drives happy. The description in the link sounds very familiar especially looking for damaged tracks under and around the caps. Rebuilt correctly it will not hurt the drive and might avoid hours of future frustration trying to maintain the DVI and its drives. From: M100 mailto:m100-boun...@lists.bitchin100.com>> on behalf of Charles Hudson mailto:clh...@gmail.com>> Reply-To: mailto:m...@bitchin100.com>> Date: Monday, January 20, 2020 at 6:07 AM To: mailto:m100@lists.bitchin100.com>> Subject: [M100] Request for info on RS DV Interface I'm just wondering if the community has experience with this problem and can shed light on the subject. If it has to be I'll do it, just a question of priority.
[M100] Request for info on RS DV Interface
Thank you to Fugu ME100 for the link to the cini information on ClassicCmp.org. I took off the cover and removed the drives: both are SSDD, but one is a TEAC FD-54B and the other is a TEC, a brand which I had never seen before. In reading up on the DV I came across this posting: http://personalpages.tds.net/~rcarlsen/cbm/msd/REPAIRS/MSD.txt. The writer, in reference to the TEC FB-501which is the primary drive in my unit, makes the claim that ALL electrolytic capacitors on these units WILL fail and MUST be replaced. I'm just wondering if the community has experience with this problem and can shed light on the subject. If it has to be I'll do it, just a question of priority. Thanks again, -CH-
Re: [M100] Request for info on RS DV Interface
That would be an option, but I think I’d be happier doing something internal. Swapping the PSU shouldn’t be to hard. Only I wasn’t thinking about swapping components to make to psu z240v compatible. However I’m certain open to trying Sent from my iPad > On 19 Jan 2020, at 4:42 pm, Fugu ME100 wrote: > > > Probably the easiest and safest :) method is to use an Auto-transformer to > step down the UK 240V to the US 120V. They should be available with a UK > plug on one side and a US socket on the other you can then simply plug in the > DVI unit without touching any live 240V mains - they are generally packaged > for immediate use no need to wire up. The DVI unit takes 66W (according to > the manual) just make sure the Auto–transformer is capable of supplying more > than that I would look for something >100W. The only issue is that the 120V > will be at 50Hz and not 60Hz which will make the internal DVI transformer > less efficient but it should be OK. > > https://uk.rs-online.com/web/p/autotransformers/3101156/ this one might be a > good option to look at, there are quite a few others, the higher VA the > better - depends on your budget. > > The other issue will be the composite video output might/will need an adapter > too in order to convert it to the UK PAL standard, it will be NTSC Composite > output in the US version. They are available on the well known online > auction sites or other online retailers. Some of them claim to convert to > HDMI although not sure how good the quality will be from those units. If > you have a composite video monitor that should produce the best results. > > From: M100 on behalf of > > Reply-To: > Date: Sunday, January 19, 2020 at 6:32 AM > To: > Subject: Re: [M100] Request for info on RS DV Interface > > I’ve never done anything like that, so if anyone can give a little hand > holding, then sure! > > I’m fine soldering, it’s just I haven’t played around with power supplies. > Once zapped myself with 240v mains while working on a Macintosh Plus, once > was quite enough. Sitting in a house In the dark, because the fuse box was > tripped, with my arm killing me., ah the memories :-P > > >>
Re: [M100] Request for info on RS DV Interface
Probably the easiest and safest :) method is to use an Auto-transformer to step down the UK 240V to the US 120V. They should be available with a UK plug on one side and a US socket on the other you can then simply plug in the DVI unit without touching any live 240V mains - they are generally packaged for immediate use no need to wire up. The DVI unit takes 66W (according to the manual) just make sure the Auto–transformer is capable of supplying more than that I would look for something >100W. The only issue is that the 120V will be at 50Hz and not 60Hz which will make the internal DVI transformer less efficient but it should be OK. https://uk.rs-online.com/web/p/autotransformers/3101156/ this one might be a good option to look at, there are quite a few others, the higher VA the better - depends on your budget. The other issue will be the composite video output might/will need an adapter too in order to convert it to the UK PAL standard, it will be NTSC Composite output in the US version. They are available on the well known online auction sites or other online retailers. Some of them claim to convert to HDMI although not sure how good the quality will be from those units. If you have a composite video monitor that should produce the best results. From: M100 mailto:m100-boun...@lists.bitchin100.com>> on behalf of mailto:james.z...@gmail.com>> Reply-To: mailto:m...@bitchin100.com>> Date: Sunday, January 19, 2020 at 6:32 AM To: mailto:m...@bitchin100.com>> Subject: Re: [M100] Request for info on RS DV Interface I’ve never done anything like that, so if anyone can give a little hand holding, then sure! I’m fine soldering, it’s just I haven’t played around with power supplies. Once zapped myself with 240v mains while working on a Macintosh Plus, once was quite enough. Sitting in a house In the dark, because the fuse box was tripped, with my arm killing me., ah the memories :-P
Re: [M100] Request for info on RS DV Interface
I’ve never done anything like that, so if anyone can give a little hand holding, then sure! I’m fine soldering, it’s just I haven’t played around with power supplies. Once zapped myself with 240v mains while working on a Macintosh Plus, once was quite enough. Sitting in a house In the dark, because the fuse box was tripped, with my arm killing me., ah the memories :-P Sent from my iPad > On 19 Jan 2020, at 1:22 am, Fugu ME100 wrote: > > > If you wanted to retain the look/feel you could replace the 120V step down > transformer wth a 240V step down. The DVI Service manual does not mention > the step down voltage but it might be on the transformer. You would also > have to replace the AC wiring, switch and fuse holder with 240V rated cables, > as well as the fuse. From the service manual that is all R/S swapped when > producing the UK version (apart from the RF modulator for the TV of course :) > ). The power supply board is the same – or at least it appears to be from > the parts list. > > > The service manual is on http://www.classiccmp.org/cini/systems.htm in the > M100 section. > > From: M100 on behalf of Mike Stein > > Reply-To: > Date: Saturday, January 18, 2020 at 3:55 PM > To: > Subject: Re: [M100] Request for info on RS DV Interface > > Looks like a garden variety linear 12 and 5 V supply; a 3 Amp each switcher > should be able to replace it. > - Original Message - > From: James Zeun > To: m...@bitchin100.com > Sent: Saturday, January 18, 2020 6:22 PM > Subject: Re: [M100] Request for info on RS DV Interface > > > > If I didn't want to use a step down. Would it take much to replace the > internal PSU with something else? >
Re: [M100] Request for info on RS DV Interface
If you wanted to retain the look/feel you could replace the 120V step down transformer wth a 240V step down. The DVI Service manual does not mention the step down voltage but it might be on the transformer. You would also have to replace the AC wiring, switch and fuse holder with 240V rated cables, as well as the fuse. From the service manual that is all R/S swapped when producing the UK version (apart from the RF modulator for the TV of course :) ). The power supply board is the same – or at least it appears to be from the parts list. The service manual is on http://www.classiccmp.org/cini/systems.htm in the M100 section. From: M100 mailto:m100-boun...@lists.bitchin100.com>> on behalf of Mike Stein mailto:mhs.st...@gmail.com>> Reply-To: mailto:m...@bitchin100.com>> Date: Saturday, January 18, 2020 at 3:55 PM To: mailto:m...@bitchin100.com>> Subject: Re: [M100] Request for info on RS DV Interface Looks like a garden variety linear 12 and 5 V supply; a 3 Amp each switcher should be able to replace it. - Original Message - From: James Zeun<mailto:james.z...@gmail.com> To: m...@bitchin100.com<mailto:m...@bitchin100.com> Sent: Saturday, January 18, 2020 6:22 PM Subject: Re: [M100] Request for info on RS DV Interface If I didn't want to use a step down. Would it take much to replace the internal PSU with something else?
Re: [M100] Request for info on RS DV Interface
Thanks for that, I’ve been trying to find the service manual but had no luck. I think if and when I get my DV unit, I’ll swap the PSU out to make it UK friendly. Maybe use a mini ATX PSU or perhaps on of these. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F123997553994 It sadly doesn’t mention the amperage, but ATX is meant to carry 5A maximum load. Sent from my iPad > On 18 Jan 2020, at 11:55 pm, Mike Stein wrote: > > > Looks like a garden variety linear 12 and 5 V supply; a 3 Amp each switcher > should be able to replace it. > - Original Message - > From: James Zeun > To: m...@bitchin100.com > Sent: Saturday, January 18, 2020 6:22 PM > Subject: Re: [M100] Request for info on RS DV Interface > > > > If I didn't want to use a step down. Would it take much to replace the > internal PSU with something else? > > Someone will have to educate me on the inner workings as I dont know anything > about the inside of a DV interface. > > Surely it doesn't actually need 1000w??? That seems just a bit excessive. > > On Sat, 18 Jan 2020, 10:30 pm Gary Hammond, wrote: >> I ended up buying a stepdown transformer for mine. If you get a US >> powerboard to plug into the transformer, you can also use the US plug packs >> plus I have a US printer that I plug into the transformer as well. It's a >> beefy 1000W transformer so can handle the load. You shouldn't need something >> this big if you are powering just the DVI. >> >> >> -Original Message- >> From: M100 On Behalf Of james >> Sent: Sunday, 19 January 2020 11:08 AM >> To: m...@bitchin100.com >> Subject: Re: [M100] Request for info on RS DV Interface >> >> Hey everyone >> >> >> I have a DV related question >> >> >> It's now looking like I might very well be getting my own, however as the >> unit is coming from the States and I live in England. It raises the question >> of power, we use 240v here and I was wondering if i'm going to need to >> modify the unit or buy some sort of step down. >> >> Cheers >> James >>
Re: [M100] Request for info on RS DV Interface
Looks like a garden variety linear 12 and 5 V supply; a 3 Amp each switcher should be able to replace it. - Original Message - From: James Zeun To: m...@bitchin100.com Sent: Saturday, January 18, 2020 6:22 PM Subject: Re: [M100] Request for info on RS DV Interface If I didn't want to use a step down. Would it take much to replace the internal PSU with something else? Someone will have to educate me on the inner workings as I dont know anything about the inside of a DV interface. Surely it doesn't actually need 1000w??? That seems just a bit excessive. On Sat, 18 Jan 2020, 10:30 pm Gary Hammond, wrote: I ended up buying a stepdown transformer for mine. If you get a US powerboard to plug into the transformer, you can also use the US plug packs plus I have a US printer that I plug into the transformer as well. It's a beefy 1000W transformer so can handle the load. You shouldn't need something this big if you are powering just the DVI. -Original Message- From: M100 On Behalf Of james Sent: Sunday, 19 January 2020 11:08 AM To: m...@bitchin100.com Subject: Re: [M100] Request for info on RS DV Interface Hey everyone I have a DV related question It's now looking like I might very well be getting my own, however as the unit is coming from the States and I live in England. It raises the question of power, we use 240v here and I was wondering if i'm going to need to modify the unit or buy some sort of step down. Cheers James
Re: [M100] Request for info on RS DV Interface
If I didn't want to use a step down. Would it take much to replace the internal PSU with something else? Someone will have to educate me on the inner workings as I dont know anything about the inside of a DV interface. Surely it doesn't actually need 1000w??? That seems just a bit excessive. On Sat, 18 Jan 2020, 10:30 pm Gary Hammond, wrote: > I ended up buying a stepdown transformer for mine. If you get a US > powerboard to plug into the transformer, you can also use the US plug packs > plus I have a US printer that I plug into the transformer as well. It's a > beefy 1000W transformer so can handle the load. You shouldn't need > something this big if you are powering just the DVI. > > > -Original Message- > From: M100 On Behalf Of james > Sent: Sunday, 19 January 2020 11:08 AM > To: m...@bitchin100.com > Subject: Re: [M100] Request for info on RS DV Interface > > Hey everyone > > > I have a DV related question > > > It's now looking like I might very well be getting my own, however as the > unit is coming from the States and I live in England. It raises the > question of power, we use 240v here and I was wondering if i'm going to > need to modify the unit or buy some sort of step down. > > Cheers > James > >
Re: [M100] Request for info on RS DV Interface
I ended up buying a stepdown transformer for mine. If you get a US powerboard to plug into the transformer, you can also use the US plug packs plus I have a US printer that I plug into the transformer as well. It's a beefy 1000W transformer so can handle the load. You shouldn't need something this big if you are powering just the DVI. -Original Message- From: M100 On Behalf Of james Sent: Sunday, 19 January 2020 11:08 AM To: m...@bitchin100.com Subject: Re: [M100] Request for info on RS DV Interface Hey everyone I have a DV related question It's now looking like I might very well be getting my own, however as the unit is coming from the States and I live in England. It raises the question of power, we use 240v here and I was wondering if i'm going to need to modify the unit or buy some sort of step down. Cheers James
Re: [M100] Request for info on RS DV Interface
Hey everyone I have a DV related question It's now looking like I might very well be getting my own, however as the unit is coming from the States and I live in England. It raises the question of power, we use 240v here and I was wondering if i'm going to need to modify the unit or buy some sort of step down. Cheers James
[M100] Request for info on RS DV Interface
Brian, Thanks for your response to my request, for links to information and for illuminating some of the darker corners of the topic. I have an M100 and an M102 that could interact with the DV interface, but I've been wondering if I need both and will probably opt for a cable that suits on or the other. My DV has two drives (one is loose...) I have some 5.25" DD disks and should be able to find a way to boot it, if it powers up at all. I'll report back with progress. Thanks again, -CH-
Re: [M100] Request for info on RS DV Interface
There is a 3-part cable kit that serves all 3 models, and a few different types of 1-piece cables that support 100-only, 102-only, and 102 & 200. The pics and descriptions on arcadeshopper are wrong, but he has all these 4 types of cable kits (unless some sold out by now), so ignore the site and just specify by email which kind you want: 100, 102, 102/200, or 100/102/200. You'll need a system disk too. There is a disk for 100 and a disk for 100 & 200. If you don't have a 200, don't get the 100/200 version of the disk. It works but it requires a 200 to make fully correct and functional backups of the 100/200 disk. Other than that, it supports all 3 models, so if you have multiple machines including a 200, you can just get the 100/200 disk and use it for everything. Just only use the 200 to make copies. The problem is if you use a 100 or 102 to copy the 100/200 system disk, the copy will only boot a 100 or 102, and won't boot a 200. In that case you should delete the *.200 files from that backup and label the disk as 100. You'll need some 360k double density disks too, NOT 1.2M. -- bkw On Sat, Jan 18, 2020, 5:55 AM Charles Hudson wrote: > Thanks to Mike, James, Gregory and Jim for your responses. I found a copy > of the manual and learned that there is an OS disk required for startup. I > didn't realize there were two different cables, one for the 100 and one for > the 102. I was hoping it might be a standard cable, but I guess I'll be > shopping at the Arcade, Gregory. > > Yes, there is an RF interface as well as a composite, but I hate RF. I > have a Commodore 1702 monitor that accepts a composite feed and I think > that will work with this setup. > > James Z., the manual describes the disk-BASIC used with this device as a > superset of M100 BASIC. I also read - on Wikipedia - that the TRS-80 Model > 3 BASIC is different from that used in the Model 4. So that's four > different "flavors" of BASIC within the product line of just one > manufacturer. Can't assume all BASICs are the same. > > Jim, one man's "Trash-80" is another man's treasure. Good luck with your > sale. > > Mike, thanks for your good wishes, guidance and contributions to the > community. > > -CH- >
Re: [M100] Request for info on RS DV Interface
So many BASICS so little time!!! On Sat, 18 Jan 2020, 10:55 am Charles Hudson, wrote: > Thanks to Mike, James, Gregory and Jim for your responses. I found a copy > of the manual and learned that there is an OS disk required for startup. I > didn't realize there were two different cables, one for the 100 and one for > the 102. I was hoping it might be a standard cable, but I guess I'll be > shopping at the Arcade, Gregory. > > Yes, there is an RF interface as well as a composite, but I hate RF. I > have a Commodore 1702 monitor that accepts a composite feed and I think > that will work with this setup. > > James Z., the manual describes the disk-BASIC used with this device as a > superset of M100 BASIC. I also read - on Wikipedia - that the TRS-80 Model > 3 BASIC is different from that used in the Model 4. So that's four > different "flavors" of BASIC within the product line of just one > manufacturer. Can't assume all BASICs are the same. > > Jim, one man's "Trash-80" is another man's treasure. Good luck with your > sale. > > Mike, thanks for your good wishes, guidance and contributions to the > community. > > -CH- >
[M100] Request for info on RS DV Interface
Thanks to Mike, James, Gregory and Jim for your responses. I found a copy of the manual and learned that there is an OS disk required for startup. I didn't realize there were two different cables, one for the 100 and one for the 102. I was hoping it might be a standard cable, but I guess I'll be shopping at the Arcade, Gregory. Yes, there is an RF interface as well as a composite, but I hate RF. I have a Commodore 1702 monitor that accepts a composite feed and I think that will work with this setup. James Z., the manual describes the disk-BASIC used with this device as a superset of M100 BASIC. I also read - on Wikipedia - that the TRS-80 Model 3 BASIC is different from that used in the Model 4. So that's four different "flavors" of BASIC within the product line of just one manufacturer. Can't assume all BASICs are the same. Jim, one man's "Trash-80" is another man's treasure. Good luck with your sale. Mike, thanks for your good wishes, guidance and contributions to the community. -CH-
Re: [M100] Request for info on RS DV Interface
Manuals are scanned and downloadable too. http://tandy.wiki/Disk/Video_Interface On Fri, Jan 17, 2020, 5:54 PM Gregory McGill wrote: > http://ftp.whtech.com/club100/doc/dvi.pdf > > It works with the 100, 102 and 200, it provides a video screen (composite > out) and disk drive, it requires specific os to be loaded off disk then it > uploads a patched basic (basically) to use the display > > I have disks, cables etc here > https://www.arcadeshopper.com/wp/?page_id=11#!/100-102-200/c/28313042/offset=0=nameAsc > > > Greg > > On Fri, Jan 17, 2020 at 2:38 PM Charles Hudson wrote: > >> I just acquired a Radio Shack disk video interface; I haven't plugged it >> in yet and it came with no documentation. It does have a port on the >> bottom - looks like a ribbon cable - and a couple of RCA jacks on the back, >> so there is a way in and a way out, but I don' know what it was designed to >> interface with. Maybe the M100? >> >> I think however that some of the community have these in their >> collection. I'd appreciate any guidance you can give me. Specs? Manual? >> Thanks for your replies. >> >> -CH- >> >
Re: [M100] Request for info on RS DV Interface
And, though it helps the OP not at all, I hope it's not too forward to note that I have two of these units, and need only 1, so I am looking to sell my second unit (works, with disks, with homemade T100 cable, 1 drive, missing drive bay door, good shape) Jim
Re: [M100] Request for info on RS DV Interface
Small nitpick: it has a ch3/4 RF TV output as well as the composite out. And of course the cable for the M100 is different from the 102/200. I believe there are sources on here for both the cable and the disk. Have fun! - Original Message - From: Gregory McGill To: m...@bitchin100.com Sent: Friday, January 17, 2020 5:54 PM Subject: Re: [M100] Request for info on RS DV Interface http://ftp.whtech.com/club100/doc/dvi.pdf It works with the 100, 102 and 200, it provides a video screen (composite out) and disk drive, it requires specific os to be loaded off disk then it uploads a patched basic (basically) to use the display I have disks, cables etc here https://www.arcadeshopper.com/wp/?page_id=11#!/100-102-200/c/28313042/offset=0=nameAsc Greg On Fri, Jan 17, 2020 at 2:38 PM Charles Hudson wrote: I just acquired a Radio Shack disk video interface; I haven't plugged it in yet and it came with no documentation. It does have a port on the bottom - looks like a ribbon cable - and a couple of RCA jacks on the back, so there is a way in and a way out, but I don' know what it was designed to interface with. Maybe the M100? I think however that some of the community have these in their collection. I'd appreciate any guidance you can give me. Specs? Manual? Thanks for your replies. -CH-
Re: [M100] Request for info on RS DV Interface
Always wanted to have a DVI, just never seem to come up on eBay over here. Sent from my iPad > On 17 Jan 2020, at 10:54 pm, Gregory McGill wrote: > > http://ftp.whtech.com/club100/doc/dvi.pdf > > It works with the 100, 102 and 200, it provides a video screen (composite > out) and disk drive, it requires specific os to be loaded off disk then it > uploads a patched basic (basically) to use the display > > I have disks, cables etc here > https://www.arcadeshopper.com/wp/?page_id=11#!/100-102-200/c/28313042/offset=0=nameAsc > > > Greg > >> On Fri, Jan 17, 2020 at 2:38 PM Charles Hudson wrote: >> I just acquired a Radio Shack disk video interface; I haven't plugged it in >> yet and it came with no documentation. It does have a port on the bottom - >> looks like a ribbon cable - and a couple of RCA jacks on the back, so there >> is a way in and a way out, but I don' know what it was designed to interface >> with. Maybe the M100? >> >> I think however that some of the community have these in their collection. >> I'd appreciate any guidance you can give me. Specs? Manual? Thanks for >> your replies. >> >> -CH-
Re: [M100] Request for info on RS DV Interface
http://ftp.whtech.com/club100/doc/dvi.pdf It works with the 100, 102 and 200, it provides a video screen (composite out) and disk drive, it requires specific os to be loaded off disk then it uploads a patched basic (basically) to use the display I have disks, cables etc here https://www.arcadeshopper.com/wp/?page_id=11#!/100-102-200/c/28313042/offset=0=nameAsc Greg On Fri, Jan 17, 2020 at 2:38 PM Charles Hudson wrote: > I just acquired a Radio Shack disk video interface; I haven't plugged it > in yet and it came with no documentation. It does have a port on the > bottom - looks like a ribbon cable - and a couple of RCA jacks on the back, > so there is a way in and a way out, but I don' know what it was designed to > interface with. Maybe the M100? > > I think however that some of the community have these in their > collection. I'd appreciate any guidance you can give me. Specs? Manual? > Thanks for your replies. > > -CH- >
[M100] Request for info on RS DV Interface
I just acquired a Radio Shack disk video interface; I haven't plugged it in yet and it came with no documentation. It does have a port on the bottom - looks like a ribbon cable - and a couple of RCA jacks on the back, so there is a way in and a way out, but I don' know what it was designed to interface with. Maybe the M100? I think however that some of the community have these in their collection. I'd appreciate any guidance you can give me. Specs? Manual? Thanks for your replies. -CH-
