68kMLA Classic Interface
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| Click here to select a new forum. | | Macintosh SE blank screen, no P.O.S.T. | Posted by: ChelovekChelovekov on 2020-07-25 03:51:37
Hello,
I have recently purchased a Macintosh SE, which doesn't work. I have recapped both the logic board and analog board, and I have even replaced the RAM. When powering on, the fan starts up but there is no sound coming from the speaker and the screen is black. If I remove one RAM stick, the screen starts to show chaotic noise (which is normal because I haven't changed the jumpers) which means that the CRT circuitry is completely fine. What am I missing? Is there a bad chip that I should replace?
I really don't want to spend 90$ on a new logic board.
P.S: If listening closely to the speaker, it makes a repetitive clicking sound.
Thank you.
| Posted by: JRL on 2020-07-25 04:39:34
I have an extra SE logic that I tested recently - where are you located? Feel free to message me
| Posted by: ChelovekChelovekov on 2020-07-27 12:56:37
UPDATE: The culprit was a bad high ROM chip. Replacing it fixed the mac.
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