68kMLA Classic Interface

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Recapping a Color Classic
Posted by: kaister on 2025-03-20 13:16:40 I've recently acquire a Color Classic. When I picked it up the battery was fine but you can clearly tell the caps been leaking so I ordered a cap kit. I just removed the caps and unfortunately torn the positive pad on C8 cleanly off. This is what it looks like now: Board after some basic cleaning and caps removed. C8 - the only 16V cap, where does the postive pad lead to? Also, I notice the postive pad for C3 and C11 lead to ground, is that normal? Every other cap beside C4 and C9 have their negative lead to ground? Where does the pad from C4 and C9 lead to? I'm trying to double check and verify whether there is any trace damage from the cap leaks. Side questions. The board came with 2 stick of ram and no vram, does the color classic work without vram?
Posted by: adespoton on 2025-03-20 13:31:45 I've recently acquire a Color Classic. When I picked it up the battery was fine but you can clearly tell the caps been leaking so I ordered a cap kit. I just removed the caps and unfortunately torn the positive pad on C8 cleanly off. This is what it looks like now: View attachment 84592 Board after some basic cleaning and caps removed. View attachment 84593 C8 - the only 16V cap, where does the postive pad lead to? Also, I notice the postive pad for C3 and C11 lead to ground, is that normal? Every other cap beside C4 and C9 have their negative lead to ground? Where does the pad from C4 and C9 lead to? I'm trying to double check and verify whether there is any trace damage from the cap leaks. Side questions. The board came with 2 stick of ram and no vram, does the color classic work without vram? I can at least answer your last question: the CC comes with 256Kb VRAM on-board; the VRAM slot is for adding 256Kb extra. The extra is useful if, for example, you perform the board modification to change the screen resolution to 640x480 (which requires more than 256Kb VRAM). Otherwise, it allows you to increase bit depth. Without a PDS upgrade, the max memory you can stick in the CC is 2 4MB SIMMS, which along with the on-board 4MB, brings the total to 12, of which 10 is addressable.
Posted by: shiroi on 2025-03-20 14:22:41 The positive side of C8 connects to L3 next to it.
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