Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
How are your voltages?
Yes, yours got hot. Most common issue is bad filters, but what I have also seen is low or missing bias on an output tube. Amazing that they can conduct enough current to cause the PT to overheat, but tubes like a 42 (6F6) can.
"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
Messages In This Thread
RE: Philco 570 - by Phlogiston - 04-27-2019, 05:59 PM
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Recent Posts
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Philco 42-345 Restoration/Repair
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So far still no broadcast, I am posting pictures of #14 Oscillator and also a resistor #27 which connects to an XXL tube...osanders0311 — 04:02 PM |
Part numbers to model cross
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I believe there is that document, and I think we might have it in the Library.morzh — 03:29 PM |
Philco 42-345 Restoration/Repair
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Ok MrFixr55,
I have tried the DeoxIT D5 on the band switch and even though it has relieved the tension I felt when turn...osanders0311 — 11:11 AM |
Part numbers to model cross
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Is there a reference somewhere where you can punch in Philco part numbers and see what models those parts were used in?Jim Dutridge — 10:17 AM |
Philco 42-345 Restoration/Repair
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Hi OSanders,
Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM |
5U4 vs 5Z4 tubes
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I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM |
Philco 42-345 Restoration/Repair
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Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
5U4 vs 5Z4 tubes
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A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
Philco 42-345 Restoration/Repair
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Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
Philco 42-345 Restoration/Repair
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RodB
:beerchug:Vlad95 — 10:22 AM |
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