the rom and IWM chips look fine the sockets are clean. I can try reflowing some of those rusted joints.
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Mac SE no bong, no display. not getting anywhere with troubleshooting
- Thread starter marcocet
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Nothing seems to happen when i press it.
The reset button shows 450 ohm not pressed and 0 when press so seems to be working?
The Interrupt shows 3750 ohm when not pressed in though? Is 450 for the reset button too low?
also interupt button may be broken as it doesnt change resistance when pressed
13.5V is high - not sure exactly what would cause that (power supply issue?). Usually the problem is the opposite with voltage too low. I think most (maybe all) of the chips would run off 5V.
At this point, it really could be anything wrong with the logic board.
May be worth taking a close look with a magnifying glass on backside to see if there are any broken solder joints, and on the component side to look for broken or corroded traces or components.
After that, I'd go through the diagnostics in a systematic way. For example, follow the algorithms for "dead sets" in the Larry Pina repair books.
Good luck!
Yea im not sure why it is that high. I didnt think it was that high when i measured previously
Yea I will do that and look closer for traces
Oh interesting i didnt realize there were books other than dead mac scrolls. I will take a look at the dead sets section!
Thank you !
Yeah you could also check out: https://vintageapple.org/macbooks/pdf/Macintosh_Repair_&_Upgrade_Secrets_1990.pdf
and https://archive.org/details/macclassicse00larr
Yea sorry I meant I would check that out. I didn't realize the author had more books other than dead mac scrolls.
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