My Christmas day 9T246 restoration! Almost.....

[DaveWM]

since we are talking about caps, I decided to test out reforming a NOS 3 section.

150 @450v
100@400v
100@50v

I started out at 25v, the eye quickly opened, I jumped up to 150 pretty quick and again it opened pretty fast. I have it sitting at 250v now and its about .2ma of leakage (have a DMM in series with the cap eye tester). I will leave it there overnite and jump up to 350v tomorrow and the 450v later in the day.

I will check for leakage between terminals later, and then will leave it alone for a couple of weeks and see how well it performs. I have a big box full of these NOS caps, I had orig planned on using them as base donors but I like to experiment.

I personally do not replace a can cap automatically, like Pentode, I try to reform them out of circuit 1st, if they compare to like new caps I just reconnect them and then fuse the B+

I did a recent project where I did this on a 8t241 chassis, replaced all the wax paper caps and a few of the horz mica (after having some horz issues).

All the cans were reformed and tested fine, some had been replaced some were original.

I am not trying to say its wrong to replace them, but I prefer to do what it takes to get the set running and then trouble shoot issues as required. different strokes for different folks.