Hi!
As you might guess I'm having a problem with a very old power supply. When I got my FM TOWNS computer the power supply had a lot of corrosion from leaning capacitors. I bought replacement capacitors and cleaned the board extremely thoroughly. Soldered them in and my PC came to life! I was excited!
About a month later I turned the computer on and it makes a loud whining or hissing noise for about 20 seconds and then shuts off and won't come back on. It will come on for about half a second and the front lights will light up then it will shut right back down. I'm not so sure where to start as far as troubleshooting as these old Japanese computers aren't well documented in the West. I've replaced one IC I've heard others had issues with on another forum along with 3 small transistors but the symptoms haven't changed.
I know some people just wire an ATX PSU and throw it in but I would like to salvage this and revive my PC. What should be my next route based on these symptoms?
As you might guess I'm having a problem with a very old power supply. When I got my FM TOWNS computer the power supply had a lot of corrosion from leaning capacitors. I bought replacement capacitors and cleaned the board extremely thoroughly. Soldered them in and my PC came to life! I was excited!
About a month later I turned the computer on and it makes a loud whining or hissing noise for about 20 seconds and then shuts off and won't come back on. It will come on for about half a second and the front lights will light up then it will shut right back down. I'm not so sure where to start as far as troubleshooting as these old Japanese computers aren't well documented in the West. I've replaced one IC I've heard others had issues with on another forum along with 3 small transistors but the symptoms haven't changed.
I know some people just wire an ATX PSU and throw it in but I would like to salvage this and revive my PC. What should be my next route based on these symptoms?
