I know this topic comes up a lot. But my SE/30 is having issues.
Known problems:
1) Horizontal stripes (nothing else)
2) No audio at all
3) Heavily corroded.
Here is what I've done:
1) Cleaned as much green corrosion as I possibly could with vinegar, scrubbing, IPA, etc. No noticeable damaged traces.
2) Removed battery (battery did NOT leak)
3) Washed, re-washed, cleaned and re-cleaned.
4) Re-capped digital board.
OK, so long story short, I think literally every electrolytic cap on the board leaked. I've cleaned as best I could. I've scrapped off all the green stuff I can find. But I admit the pins on half the board look "dirty" and not shiny. Many test out OK with a continuity tester.
Now, when I power on the Mac, I get nothing but horizontal stripes with no audio at all. But what I noticed this time that the UG6 chip gets pretty hot to the touch. Much hotter than the other nearby chips. The other ones, however, do get a little warm. The '030 and other IC's are ice cold after 5 minutes. But those socketed chips get warm. Especially UG6. Almost to the point it's uncomfortable.
I've confirmed they are plugged in correctly.
So, what's my next step?
Thanks!
Known problems:
1) Horizontal stripes (nothing else)
2) No audio at all
3) Heavily corroded.
Here is what I've done:
1) Cleaned as much green corrosion as I possibly could with vinegar, scrubbing, IPA, etc. No noticeable damaged traces.
2) Removed battery (battery did NOT leak)
3) Washed, re-washed, cleaned and re-cleaned.
4) Re-capped digital board.
OK, so long story short, I think literally every electrolytic cap on the board leaked. I've cleaned as best I could. I've scrapped off all the green stuff I can find. But I admit the pins on half the board look "dirty" and not shiny. Many test out OK with a continuity tester.
Now, when I power on the Mac, I get nothing but horizontal stripes with no audio at all. But what I noticed this time that the UG6 chip gets pretty hot to the touch. Much hotter than the other nearby chips. The other ones, however, do get a little warm. The '030 and other IC's are ice cold after 5 minutes. But those socketed chips get warm. Especially UG6. Almost to the point it's uncomfortable.
I've confirmed they are plugged in correctly.
So, what's my next step?
Thanks!
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