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Restored Philco 46-420 code 121 has slight low pitch hum.
#18

Well the thing is I swapped out multiples of ALL the tubes, replaced all the resistors and capacitors so even if I found a unacceptable voltage what would cause it?

Also what would fix it?

I put in another 20 mf electrolytic with + end on pin 4 of 50L6 and - end on B- and I still get a low hum.

I have another speaker/transformer assembly from a different Hippo project and it is an exact match.

I suppose I could install it to see if that helps...


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RE: Restored Philco 46-420 code 121 has slight low pitch hum. - by terrylett - 03-19-2019, 10:43 AM



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