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| Macintosh 512k C20 and C5 capacitor values |
Posted by: jake18125 on 2020-11-17 15:06:16
Bit of an odd one this. I was sent a 512k which was a little bit... erratic. Sometimes it will bong and flash the floppy icon, other times it will just get stuck on a corrupted screen. Thinking it was a RAM issue I took the logic board and found out that for some reason someone had removed C5 and C20 at some point (?!). I know there may be ram issues or potentially issues with the roms, but I just need to find the values for those two capacitors to rule that out as an issue!
Hope you can help 🙂
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Posted by: jake18125 on 2020-11-17 15:07:18
Oh just to clarify I mean C5 and C20 on the logic board. I'm baffled why someone would of removed them!
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Posted by: jake18125 on 2020-11-18 01:22:42
Oops, C22! I need to find out what C22 is, not C20!
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Posted by: dochilli on 2020-11-18 06:33:06
On my logic board C22 is a 4.7uF, 35V
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Posted by: erichelgeson on 2020-11-18 06:39:21
There was a good video just posted with all the details too 🙂
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