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Bad cap about only thing left with PS unloaded. Be sure the choke
isnt shorted either.
You can bridge them to test.
Take about a 50mfd 450 volt and hang it right on the old one
+ to + , - to - see if any improve it.
As you try different sections DISCHARGE it between.
Get in the habit of that cause if you do a SS set you can charge up 150 volts then dump it on the 24 V line, not good.
This was a "fix TV 101" subject. Also for radio. Best use was quickly get the
TV going to evaluate for est.
Zeno
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