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Questions tagged [repair]

For questions about retrocomputing hardware repair. This tag should be used for non-functioning systems; for working systems use the "maintenance" tag.

2
votes
0answers
154 views

Is my Japanese Pokemon Red cart fake or damaged?

I recently got this copy of Pokemon Red (JP). After an indeterminate amount of time (anywhere from 30 seconds to 30 minutes), it will cause my GB Player to crash. I have functional copies of Yellow ...
5
votes
0answers
153 views

Possible cause for C128 A/V output containing faintly coloured columns and failing shortly after?

I recently acquired a Commodore 128. It worked fine for about an hour, in both C64 and C128 mode, at the exception of some coloured bars, before displaying garbage and not booting anymore into any ...
3
votes
0answers
142 views

Commodore C128 MOS 6526A interchangeability?

I have a working C128 desktop that I'm using to troubleshoot a non-working C128D-CR. I suspected a problem with CIA 2 on the C128D, so I swapped its chip labelled "6526A" with a 1988 year stamp with ...
2
votes
2answers
323 views

Fixing the horizontal size(width) of an old CRT monitor (Zenith ZCM 1390-E)

This is my first post. I looked around on the net for awhile and came across this board - looks to be the most competent, so here goes. I managed to get my hands on an old computer monitor from my ...
2
votes
1answer
209 views

Why does my IBM 5154 have an undulating wave?

My IBM 5154 had some blown capacitors in the power supply (the AC line filters). It worked, though I decided I should replace the caps in the power supply just to be safe. I went ahead and replaced ...
2
votes
2answers
460 views

3D Printed Replacement Key Caps for Atari 1040ST

How can I replace/repair broken Atari 1040ST key caps using 3D Printer? Switches are in good condition. Only the key caps are to be replaced. Did Atari followed any industry standards like Cherry MX,...
4
votes
1answer
140 views

How to diagnose a failed capacitor on the mainboard?

My Fox II 286 mainboard just blew a capacitor. I haven't yet powered it on, so maybe the cap was bad. How can I diagnose this problem, and eliminate other bad caps?
3
votes
1answer
130 views

What are best techniques for repairing a chemically damaged PCB?

I have rescued many retro computers from the hazards of leaky batteries, and occasionally replaced capacitors that were suspicious. Except for one still unusable Mac SE/30, all my repairs were done ...
8
votes
4answers
3k views

How to renew and re-ink old printer ribbons?

What is the proper way to restore and re-ink old typewriter, calculator, dot matrix printer, and mainframe lineprinter ribbons? Usually fabric ribbons or open-cell foam sponge rollers were used to ...
6
votes
4answers
611 views

What's a safe and easy way to desolder the CPU from C64?

I have probably broken my CPU by connecting 5 V from Arduino (500 mA) to the SENSE Pin of the Casette Port, So now I wonder what would be the safest way to desolder the processor? I have a cheap ...
1
vote
1answer
99 views

PCB Black Spot: Leakage?

Photo album, sorry for the hassle Quick question: Ceramic disk capacitor has leaked? Or a dodgy soldering technique? This is a quite old calculator, it's an arbitrary model nowhere to be found. Any ...
2
votes
0answers
290 views

Potentiometer rebuild - inexpensive damping grease?

I successfully took apart an Atari 2600 paddle controller, then cleaned and appropriately lubricated the contacts. However, the volume knob does not have the same smoothness as it does on the other ...
7
votes
2answers
97 views

Will this Acculite laptop boot without HDD?

First I'd like to ask: Does anybody even know of this laptop? I was surprised to find 0 information about it online. I've was asked to see if I could get this thing to boot, but it was in rough shape. ...
8
votes
1answer
304 views

Used PS1 “slim” (PSone) freezes on boot

I got a PSone ("PS1 slim") for $5 off Facebook. Real dirty, didn't have any of the cables. So I take it apart, clean it real good. I take my universal power pack and my PS2 AV cables and plug it in. ...
3
votes
1answer
257 views

Installing hdd on PhoenixBIOS A486 on Gateway 2000 4DX-33

I'm fixing up a Gateway 2000 4DX-33 which came with a Fujitsu hard drive. The CMOS battery was dead after over 20 years without use, and needed to be replaced. This meant that all BIOS settings were ...
12
votes
1answer
687 views

What cleaning/repair can be done to a Mega Drive cartridge slot?

My Mega Drive's cartridges rarely boot. It's to the point where I sometimes don't want to change the current game because it'll mean 15 minutes of me constantly taking out and re-seating the next ...
8
votes
3answers
751 views

Replacing Amiga 9 pin D-Sub mouse cable

I have an original Amiga "tank" mouse, the PCBs are good, but the cable is clearly faulty as the Y axis and left mouse click doesn't work when it is tilted to the right. I need to replace the cable ...
5
votes
1answer
175 views

How to fix Apricot Xi keyboard

I've got a reasonably large collection of old computers that I've mostly picked up at such things as car boot sales, etc., before I went to University. Now that I'm working, I'm starting to look at ...
8
votes
1answer
704 views

Why is my Sega Genesis/Mega Drive II getting frozen?

My Sega Genesis/Mega Drive II get stuck (the image on the screen seems frozen) after some incidents that occurred to it. It doesn't matter when that is happened, which game did I play or even how hot ...
5
votes
0answers
217 views

R.O.B can't move up or down

I got this R.O.B (Robotic Operating Buddy for the NES), first time I turned him on his arms wouldn't close, so I took him apart and cleaned him. I put the gears back into place. After turning him on ...
8
votes
2answers
294 views

NES only works when I press reset

My aunt gave me her old nes, it was really dirty. I opened it up, cleaned it really good, cleaned the games too. I had to get a new power pack and av cables for it. I plugged everything into my TV (...
7
votes
3answers
295 views

Is it possible to bend tension back into atari 2600 joystick contact domes?

So I got these two ataris, just got them working. I was testing out the controllers and most of them have problems with the joystick not reacting. I opened them up, cleaned them, still have the ...
6
votes
1answer
1k views

Atari 2600 has no sound, no video. Any advice?

I have 2 Atari 2600s. I got them both at a garage sale. I plugged them both in with a coaxial adapter. No sound, no video. I opened them up, didn't see any shorts, the boards looked good. There ...
13
votes
1answer
1k views

Can polarity inversion damage a ZX Spectrum?

I have a ZX Spectrum+ and it didn't came with it original power supply. I bought a 9 Volts and 2.25 Amps power supply with switchable connectors. There was a mistake and the polarity was inverted, ...
3
votes
1answer
112 views

Zenith SupersPort 286e doesn't boot at all

I have acquired a Zenith SupersPort 286e without its battery but with its (seemingly working) power supply. Sadly, the computer doesn't boot at all, nothing happens when I flick the On/Off switch. ...
7
votes
2answers
1k views

Repairing/Lubing/Fixing Amiga 500 floppy drive

I have acquired an Amiga 500 that seems fully functional, but the floppy disk drive seems to have mechanical issues. I could get it to read a few floppy disks until the last one wouldn't pop out when ...
4
votes
0answers
181 views

How can I open an IBM G50 CRT monitor?

First off, I know CRTs are dangerous and I have opened and discharged multiple CRT displays before. I've got an G50 monitor that shows a picture for a second or two and then goes blank. If you power ...
12
votes
1answer
418 views

How do I troubleshoot an Apple //e with no power light?

Recently, an Apple //e has come in my possession, and I'm trying to get it to power up. I am looking for some troubleshooting advice. I've looked around online, but there seems to be very little on ...
16
votes
1answer
1k views

I've taken my Amiga computer out of storage after several years and it doesn't work. What's the likely cause?

I've had an Amiga on a shelf for a long time. Today I took it down and tried to use it but it's not working. There's some basic activity - the power LED illuminates, and there is a video signal - but ...