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Originally Posted by altman
Should I turn it on or wait and recap first.
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I don't know how long this set was standing without switched on. Perhaps the electrolytic caps are bad and have to be formatted. Take a variac. Remove the horizontal and vertical output tube (6CB5A and 6AQ5), connect the power cord with the variac. Put a volt meter at B+ and read the d.c. voltage. Turn the variac, beginning with 5 volt, in 5 volt steps upward and read the B+ voltage (+385 V. supply). After some steps you read the first increase of voltage. Watch the meter and wait until you notice no more increasing of voltage. Then do the next 5 voltage step. Wait until B+ is constant, then do the next step and so on. I usually need some hours for this procedure. Watch the set, taste the smell of it. If you notice something unusual, stop! Touch the electrolytics. Are they cool? Or warm? If so, the leak current is too high. They have to be recapped. If everything is OK, put the removed tubes into the set and switch it on. Watch the 5U4s and 6CB5A. Listen to the line frequency. Do you get a raster? Do you hear unusual noise?
For myself, I think, you should recap all the paper capacitors as soon as possible.