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46-480 Power Transformer Vibrates
Pepperoni
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Posts: 160
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Joined: Apr 2011
City: New Port Richey State, Province, Country: Florida
#14

08-23-2013, 05:48 PM
Well so far I'm finding nothing in the audio circuit that's bad. No caps, resistors etc. The audio transformer resistance readings are per the Philco paperwork. I've never seen a speaker that was bad except for needing a recone but I'll check that too.

I did go back to page one of the Philco troubleshooting guide for this radio. This is the paperwork from Chuck Schwark.

Supposed to have a minimum of 50Kohms from B+ to chassis gnd. I have 22K. Paperwork says to check three capacitors for shorts or leakage. The E-caps and one bypass cap. The old ones were good. Four years old but I installed all new ones anyway. Still 22K from B+ to gnd.

Still pluggin' away.

Johnny
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Messages In This Thread
46-480 Power Transformer Vibrates - by Pepperoni - 07-28-2013, 10:18 PM
RE: 46-480 Power Transformer Vibrates - by Pepperoni - 08-23-2013, 05:48 PM
RE: 46-480 Power Transformer Vibrates - by EricS - 09-17-2013, 07:09 PM



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