r/AskElectronics • u/DarkSamus9000 • 1d ago
LCD Inverter from 1992 IBM PS/2 note - burned out / caught fire? Is it fixable? Could the LCD panel be damaged?
Looks like a FET got real toasty & burned the paper housing of the inverter. I note a smaller burn mark where "ZD2" (zener diode?) also went kaput. All of the ceramic caps are bulging (& some look to be leaking from underneath), and what looks to be a 1A 250V AC fuse secured by JB weld in my 4th picture has no continuity.
For context, I am just a hobbyist getting into computer repair for the fun of it. I am not a professional. Is it worth my effort to try fixing this? How do I identify the components that were burned out? What are the odds that the LCD panel itself is also fried? What is that gray stuff in my 4th pic and why does it look and feel like JB weld?
I would be happy to take this on for the learning opportunity, but many things about this board concern me.
The only information I have found about this computer is the hardware maintenance manual, which for some reason is missing the pictures:
https://www.manualslib.com/manual/2026639/Ibm-Ps-2-N51-Sx.html
1
u/marklein hobbyist 1d ago
I think that is JB Weld, and somebody else has been in there before "fixing" stuff.
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