Admiral 12x12

[MadMan]

Originally Posted by rbc7snc

The 20/40/80 uF electrolytics were replaced with 22/47/82 uF

I have the same set and recapped with similar modern values for everything. I never had any such problem, I doubt that's the case. More likely there's a bad resistor drifting high, or one of your solder joints didn't stick. Now you might scoff and say that you did a perfect job, which is how I felt. Imagine my shock when I found a joint that looked fine but was actually loose when wiggled. It can happen to anyone!

A problem I did have, however, was an internally-broken focus potentiometer. It didn't want to focus very well, and as it warmed up it would sporadically misbehave. And the actual pot felt like it didn't have enough travel. I cracked it open and found the wire winding burnt open and the plastic-y thing it's wound on had melted and malformed.