Quote:
Originally Posted by DavGoodlin
Capacitors are usually OK or totally shot, look for bulges and excreta. Good luck.
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Funny thing about '70s electros is that they often go inert with no telltale signs like venting or spooze out of the bottom.
We had a Sony come in from another shop with all sorts of vertical issues. Working through it, I found almost every capacitor bad. The shop owner said it wasn't possible a bad electrolytic was the problem because he jumped every cap in the vertical one by one (insert loud gasp that he didn't blow this Sony up by hot jumping the caps...).
Every cap that was changed either improved or changed the vertical scan until the last one or two fixed it.
None of those caps had any outward signs of problems.
John