HI all,
I'm in process of repairing a Mac SE that does boot, it does not play chimes, the CRT quickly flashes a pattern of with squares and then it rests in peace blank and silent.
I did the following:
Now: the MB was washed thoughtfully as I usually do with success
The surface looks perfect, no sign of corrosion, battery holder has no rush or sign of leakages,
The caps looks fine, but before replacing them I want to know the opinions of you guys, the video of the boot is attached hereby (the background noises have nothing to do with the Mac)
many thanks
PF
View attachment VID_20210210_220504.mp4
I'm in process of repairing a Mac SE that does boot, it does not play chimes, the CRT quickly flashes a pattern of with squares and then it rests in peace blank and silent.
I did the following:
- I added a new battery
- I checked the diodes, all just fine
- All the caps looks tidy with no sign or leakage.
- I put the motherboard in the chassis of a working SE, same outcome
- I put other know to work RAM, same outcome
- I replaced the ROM with another set from a known working SE, same outcome
- for a sort of regression test, I put back the original mother board in the chassis and all worked fine
Now: the MB was washed thoughtfully as I usually do with success
The surface looks perfect, no sign of corrosion, battery holder has no rush or sign of leakages,
The caps looks fine, but before replacing them I want to know the opinions of you guys, the video of the boot is attached hereby (the background noises have nothing to do with the Mac)
many thanks
PF
View attachment VID_20210210_220504.mp4
