68kMLA Classic Interface

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Mac Color Classic won't power on
Posted by: amedeo_68k on 2022-08-03 13:01:41
Hi,
I got another Mac Color Classic, and it won't power on.
The issue is on the logic board, swapping with another Color Classic logic board works.

I fully recapped the Logic board and the board itself is not looking too bad, pics attached..
ideas?
thank you !
Posted by: jajan547 on 2022-08-03 13:32:13
Reflow the EGRET have had this very issue with two or three Color Classics.
Posted by: amedeo_68k on 2022-08-03 13:41:59
Ok, I'm going to try, I generally avoid heating up Egret as I have read that it break easily with high temp
Posted by: jajan547 on 2022-08-03 13:42:35
They can but I'm positive this is the issue
Posted by: imactheknife on 2022-08-03 19:45:03
really, that's something I did not know either. Egret plays a big role.
Posted by: amedeo_68k on 2022-08-04 00:01:35
And I definitely need a new Egret. The capacitor leakage made a quite bad damage… the board is trivial to fix. But some Egret legs have the consistency of sand, and one is broken.
Does anyone have one ?
Thank you !
Posted by: jajan547 on 2022-08-04 04:52:29
Don't have that EGRET I have two spares of another type. I think you can just bodge a wire onto the broken leg and jump a wire from that trace with the damaged pad. I have two 341S0851 EGRET's they might be compatible.
Posted by: amedeo_68k on 2022-08-04 05:16:11
Actually this is Cuda, not Egret, may be compatible??
Posted by: 3lectr1cPPC on 2022-08-04 05:23:36
Cuda and Egret are the same chip.
Posted by: amedeo_68k on 2022-08-04 05:48:37
Oh. Good to know. Thank you. May be I have a spare LC III with egret. But LC III had no soft power on… would it work ?
Posted by: amedeo_68k on 2022-08-12 09:11:32
Hi, The Color Classic Is back alive...
Had to restore a few traces and Dremel the Egret in order to recover Pins
It Worked !!
Amedeo

IMG_3830.jpeg
Posted by: imactheknife on 2022-08-12 09:15:15
Hi, The Color Classic Is back alive...
Had to restore a few traces and Dremel the Egret in order to recover Pins
It Worked !!
Amedeo

View attachment 45041
Good job!
Posted by: joshc on 2022-08-12 09:22:47
Nice one, glad it's working again.
Posted by: LaPorta on 2022-08-12 09:30:23
Always the most satisfying feeling when they spring back alive!
Posted by: amedeo_68k on 2022-08-12 09:31:41
yeah! now going to fully recap the analog board too, it works, but I prefer to recap it
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