Classic Capacitor Conundrum

[sixregrets]

I picked up a nonfunctional Macintosh Classic recently with the intention of recapping it, exhibiting both vertical collapse on the CRT and a failure to boot (or at least failing to beep. I ordered both the logic board tantalum capacitor kit and the analog capacitor kit for the classic from console5.com. I'm something of a perpetual beginner when it comes to electronics soldering and whatnot, and seem to have made some sort of mistake.

My Classic's logic board is a 630-0395, and as such, I ordered the capacitor kit for that board. When it arrived, I realized that some of the capacitors included are intended for the the 630-0560 board which this kit is also supposed to support. Where I think I've run into a problem is CP2, as the capacitor that I removed from the board is a 1000 uF 35v. My understanding is that the replacement capacitor *must* match in terms of microfarads, but the voltage only needs to be at least equivalent. This kit seems to have included a 470 uF 50v capacitor as is used on the 630-0560.

I don't believe that I can simply substitute this 470 uF 50v capacitor into the same spot where the 1000 uF 35v was, and there is no 1000 uF 35v (or greater voltage) capacitor included in the kit. Am I missing something?

(In case it matters for some reason, this is a 120v model Classic, purchased in Canada)

 

[68Krescue]

You are correct, you will need the 1000µF 35V capacitor for CP2. There are two variations of the Classic analog boards. The earlier 630-0395 (yours) has the large female CRT power connector. The later Classic and Classic II's (630-0525) have the 4 naked power pins without the plastic connector. It appears you received a cap kit for the later revision. If so, that kit won't work. In addition to CP2, your CL1 needs 10µF 50V cap, the later 630-0525 board calls for 1000µF 25V on CL1. Hope this helps. Good Luck!

 

[karrots]

If it helps here are the caps I used for my 630-0395 Analog board.

 

[sixregrets]

Belated thanks for the responses! I sourced the correct caps and replaced them (both on the logic board and the analog board), and have also since replaced the TEA2037A IC with the hopes that was the problem causing the line collapse - alas, still no change. Any suggestions on what I can try next, in terms of the analog board, at least?