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Philco 90 help
Tamurphy67
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Posts: 4
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Joined: Jan 2014
City: New Jersey
#1

05-13-2014, 06:53 PM
I just finished recapping and checked all resistors and all tubes tested good. I have the philco 90 with a single 47 output tube. I don't get any signal unless I touch the grid cap of the 1st detector tube. Then everything comes in ok. I've read somewhere what this can be, but I can't find that thread anywhere. It's my 2nd restore. Can someone please help?
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gregb
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City: Edmonton AB CA
#2

05-13-2014, 06:58 PM
You will have to check coil #2, #5, and #7, one or more will most likely have an open primary winding.

Greg B
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gregb
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City: Edmonton AB CA
#3

05-13-2014, 07:06 PM
My bet will be on coil #5, let us know what you find.

Gregb
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Steve Davis
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City: Linn Creek, MO
#4

05-13-2014, 07:13 PM
What does the voltage read on the plat of the 24 RF tube?

Steve
M R Radios   C M Tubes
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