Okay, here's my latest, uhm, debacle.
I pulled out the SAMS last night and (from something I read somewhere else, can't remember where) actually managed to locate the vertical circuit, the logic being that this is a vertical problem. So far, so good. I managed to find that there are two electrolytics that are in that circuit. I figured it would be one or the other that's causing the squashed picture/rippling sides problem.
Turns out I had already replaced one of the caps (C5, I think), but just for good measure I jumpered another cap over it and didn't make any difference. Okay, must be the one in C4 (C4B, if I recall) which is one of those really small ones, maybe like a 40uf/50V. It's so puny that I didn't think there was a snowball's chance it would help. But I jumpered it in and took a look. Squat change. Wellsir, I was done for the night. Yes, I give up easily
Plus, I was lying on my back under the set, and a certain weiner dog insisted on helping.
New day, fresh start. I thought I'd read over the posts from the last time this happened (similar, but slightly different problem) and came up with a couple of points that I'd like to clarify before I actually flip the set over.
Doug had said that if a cap is leaky, bridging over it with another cap won't tell anything; this only works with open or changed value caps. Am I understanding this correctly? So I won't really know what's what unless I desolder the lug coming off the can and
then put the new cap in the circuit? Except for one, I don't think I bothered doing this with any of the other caps I replaced. This is not to say that I'm second-guessing Doug, I just want to be sure my feeble brain is understanding correctly.
Am I barking up the right tree with the two electrolytics that are in the vertical circuit? Or should I be looking elsewhere?
(Yes, I know I should be replacing all the caps, particularly since this is the second cap-related problem I've had. On the other hand, the more I do to a set, the likelier the chances of screwing something up totally. Believe me, I know my limitations!)
Sorry to be so stupid here. I just don't want to kill Laura! I was a perfect whiz putting in the new garbage disposer on Sunday. So apparently, I
can do something!
Here's a pic as a reminder.
Thanks!
veg
