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Hardware • Safety capacitors in the TC-01 Power Supply

Tatung Forum about 1 month ago

Hi all,Can anyone give me pointers as to where to buy the safety capacitors inside the TC-01 power supply? Specifically these ones:CE01 - .22uF 250vCE12 - 1.5nF 1500v 5%CE15 - 1.8nF 250vMany thanks,KbJStatistics: Posted by kbjunkie — Tue Apr 09, 2024 1 …

Linux • Scripts No Longer Work From OS

MISTerFPGA about 2 months ago

Hello,My backstory I have a very strange issue that I cannot figure out. I am not new to MiSTer, I have been using it for many years now, building one of the best devices I have ever owned. Luckily I jumped on this when you could buy a complete setup fo …

General Discussions • DE-10 Nano Dead?

MISTerFPGA about 2 months ago

How do I word this. It would appear that my MiSTer (this has happened before) is getting no power to the USB Boards (I changed the USB thing) but there's also no power getting through to the HDMI although it is powering up when I plug in the power supply …

AES3-4 repair with low voltage.

Neo Geo Forums about 2 months ago

Hi. I have a Neo Geo AES3-4 that I am trying to fix. I was told the fault was "only works 1 in 100 times" before it came to me. It's a 5V model, no step-down regulator. I powered it up using a bench power supply, and observed around 700mA draw. …

Official Addon Boards • USB Hub Ports Seem to Be Dead

MISTerFPGA about 2 months ago

Hi there,from one day to the other, none of the six USB ports seem to be working anymore (I have a 3.5 Amps power supply feeding the MiSTer). The BT-Dongle is no longer recognized ("BT not available in BT screen"), neither is any keyboard. The keyboard do …
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Design for a 3.3v IOU replacement

Apple Fritter about 2 months ago

I am designing the 3.3v version of a replacement for the IOU. Once it's done and I know it works, I'd like to add it to my open source IOU/MMU as a 'reference implemenation'. However, I'm just a hobbyist hardware designer, and probably not a very good one …

Help with a DIY FreHD

VCFed about 2 months ago

I've build a FreHD and trying to connect it to my TRS-80 Model 1, but it's not working. Can someone with a working FreHD help? I'm made both, the FreHD and the Model 1 adapter. If you connect your FreHD to a power 5v power supply with the …
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Sun Fire V120 and Netra 120 Power Supply

VCFed about 2 months ago

Hi there I was wondering if anyone on the forum knows if the power supply of the Sun Fire V120 and the Sun Netra 120 are interchangeable. The manual mentions that both systems are exactly the same with the only difference being the Fire V120 is an AC PSU …

Epson L2 power supply module (NJD-2729)

VCFed about 2 months ago

Looking for this plug-in module inside the laptop computer Epson L2. It must be working, not for spare parts. Thank you …

INTRA LT-386SX - Laptop / Motherboard Troubleshoot

VCFed about 2 months ago

Hello everyone, I have an INTRA LT-386SX laptop that I'm trying to troubleshoot. It was given to me by a friend, and even though the power supply they gave me "fits", it's not the original. Therefore, I'm not sure if it's e …

VT100 to VT103 conversion

VCFed about 2 months ago

hey all! i recently picked up a spare VT103 backplane on ebay thinking since they (VT103s) are quite rare, it might be possible to retrofit it into my VT100- as far as i know they are the exact same physical dimensions and all, just the power supply is bee …

CBM PET 710 WITH BASIC PROBLEMS

VCFed about 2 months ago

Good evening everyone, how are you? I've been missing from the forum for a while because I've been away from retrocomputers for a while. I bought an old Cbm Pet 710, I replaced the two Rifa capacitors in the power supply, because they had burned …
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Toshiba T1000SE damaged component

VCFed about 2 months ago

I'm trying to repair a Toshiba T1000SE laptop computer. When connected to the mains, the DC IN light turns on but nothing else. This kind of laptops do not turns on if the battery is not set and as I don't have a good battery I apply the 7,2 volts directly …

IBM PS/1 not starting up

VCFed about 3 months ago

I received a PS/1 that did not start up. "Did" because I did a hack. When powering the system, the LED on the monitor just lights up for a second. But it does that as well without the computer. So I thought the trouble could be the monitor part. …

5150 Rescue and Repair

VCFed about 3 months ago

I just recently rescued an IBM 5150 complete with keyboard and 5151 monitor from being thrown in the trash, although the 5151 appears to be totally dead but I've done no further diags Early revision 5150 motherboard with all banks populated for a total of …

Mounting a FreHD internally in a 4P

VCFed about 3 months ago

I recently bought a 4P with a handful of issues, and am looking to mount a FreHD internally. I see some information from 2014, but no specifics about other mounting options since then—though plenty of people who say that they've done it! Are there curre …

A very belated hello

VCFed about 3 months ago

Hello everyone, apparently I registered here back in 2018 and then forgot about having registered at all (facepalm). But a late introduction is better than never I guess. I design hardware for vintage machines (mainly Macs at the moment, but steadily exp …

Commodore SX64 question

VCFed about 3 months ago

Hi all I have a UK commodore sx64 which is working apart from the floppy drive but is missing it's case so I have a complete usa version one on its way. Now to test the USA one could I use the UK power supply in it by swapping them over and are most of the …

Toshiba T3200SX: detaching power supply from display

VCFed about 3 months ago

I recently acquired a Toshiba T3200SX for a modest amount knowing it may be DOA. Unsurprisingly, the system did little more than make quiet, infrequent clicking noises when powered on. After a lot of awkward disassembly I was able to get inside the power …

Can I use this power supply with Kaypro 2 (1983)?

VCFed about 3 months ago

Following this thread https://fo... learned that I can buy a Mean-Well RT-85B power supply to replace my Aztec power supply in my Kaypro 2 from 1983 (I have the Kaypro 2 th …

Franklin ACE 100 keyboard

Apple Fritter about 3 months ago

So after some minor cleaning and reseating chips, My Franklin ACE 100 (not 1000), is ALIVE!  Floppies were way out of speed, but that did not take long either.  Of course the foam and foil keyboard is totally dead and I will order a set of pads from TexE …

FS: Commodore 64 Computer w/box and manuals

VCFed about 3 months ago

For sale is a very lightly used Commodore 64. Sale includes the unit itself, box with matching serial number, power supply, RF adapter, two manuals and a registration card. I powered this up a couple months ago briefly and it successfully booted into BASIC …

TRS-80 model 4 video problem.

VCFed about 3 months ago

I was given a Model 4 which keeps blowing the video board fuse. I was told that something "shorted" in the power supply (who knows?). The power supply fuse does not blow, and if you disconnect the PS and give it AC, the output voltages look ok. I …

Toshiba T4400 Power Supply Pinouts?

VCFed about 3 months ago

I have 3 T4400 power supplies that I'm troubleshooting after replacing all the caps. I get enough life from them to get blink codes ( variously related to memory initialization) I'm hoping someone could enlighten me as to the pinouts. I know the obvious …

TV Typewriter II

VCFed about 3 months ago

A few pictures of my beautiful SWTPC TV Typewriter II. It's been in storage for maybe 30yrs and has lost a few keys, probably from having heavy things hastily stacked on top of it. I will be reviving her in the next month or so. The AC power zip cord has b …