[brownie45]

Working on a Philco 7050 tester that won't come to center scale in the calibrate "line"
position except at the highest [extreme right] setting.

Tester seems to test tubes O.K.
I lifted the chassis out & everything looks factory, except maybe the line cord has
been replaced.
 Also noticed the 6X5GT/G rect.  Heard horror stories of these shorting & taking
out transformers.
Anyone have info on this happening when used in tube tester applications??

There is only a .1 @ 400 Volt cap underneath which looks a bit questionable. Probably
could be replaced??  I thought there might be a filter for the B+, but none there.

Is anyone aware of a schematic for this unit?

The roll chart [flips on side of case] says it's for a 7051.  Wondering if it has been
updated with a newer version?

Thanks for any info.
Jim

[morzh]

Sometimes testers do that when the rectifier tube(s) panels' contacts need cleaning.
Mine does.

[klondike98]

Thread moved to test equipment.