CC powerup

[waynestewart]

One of my Color Classics had some powerup issues. Tried a different Logic board but that wasn’t it so I decided to recap the analog board. I didn’t have all the parts but decided to replace what I had while waiting for the rest to arrive. Since there were a number of the same caps used I desoldered all of each and replaced those then go to the next.

Once I had those done I thought I’d reinstall the analog board and see if that solved the problem. Once it was together I pressed the power button and nothing. I checked to make sure I hadn’t missed connecting any cables and tried a different keyboard. It was late so I went to bed thinking I’d destroyed a Color Classic.

The next day an idea came to me so as soon as I got home I took out the Analog board and held it up to a light. There starring at me were 2 holes ¼ inch apart. I’d missed putting back a capacitor. Five minutes later it was assembled again and started up as soon as I pressed the power key. The parts I replaced seemed to have solved my powerup problems but when the other caps arrive I’ll replace those so I know I have all new caps.

 

[joshc]

Yeah, it's always worth double checking your work, and referring to a diagram/photo of the board so you know you haven't missed any capacitors.

For the effort it takes to remove the analog board from one of those, I would've ordered all the capacitors beforehand and waited for them to all arrive and just tackle them all in one go.

Glad your CC is working again now.

 

[waynestewart]

The Color Classic analog board is pretty easy to remove. Unplug 6 connectors and it slides out.
The online guides suggest replacing just 13 caps but there are almost 50 and I’d prefer replacing all of them.
I thought about waiting until I had all the caps but I realized that I just don’t have time to do it in one go. I get home pretty late so most likely over 3 evenings.