Hum after recap (40-160)

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Hum after recap (40-160)

Stan the Man
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Posts: 64
Threads: 10
Joined: Nov 2015
City: Memphis,Tn

05-20-2016, 11:39 AM

Ok this will be more of a rant than anything else.. Not really asking anything.. Icon_confused

Picked up a rather nice looking 40-160 in an F style cabinet.. I've been looking for one for some time..
All the pieces are there and looked very original under the chassis except for one 8uf electrolytic..
I figured this would be a snap,.. with no cancaps or candohms to fool with, looked like a straight forward re-cap, resistor check,cleaning and few rubber wires bla bla bla...
So now I have HUM!! NOTHING BUT HUM!! A steady low hum that only changes when touching a screw driver to one side of the volume control(as much probing as I have done) I have traced the schematic until my eyes burn,.. a few times!!
Yes I did figure out that the #6 button has to be pushed in to make the tuner work.. I have not yet started checking voltages as I will need to make up a set of wires to hook up the speaker for testing out of the cabinet.. Also my tube tester doesn't have sockets for these tubes, so....? I'm just like, GRRRRRR!! Icon_mad

I hate trying to work on something without the proper tools..

As usual, comments and suggestions are welcome.. or maybe just relate a story..

Stan

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Hum after recap (40-160) - by Stan the Man - 05-20-2016, 11:39 AM

RE: Hum after recap (40-160) - by Radioroslyn - 05-20-2016, 12:06 PM

RE: Hum after recap (40-160) - by Radioroslyn - 05-20-2016, 12:18 PM

RE: Hum after recap (40-160) - by Stan the Man - 05-20-2016, 01:05 PM

RE: Hum after recap (40-160) - by Radioroslyn - 05-20-2016, 01:28 PM

RE: Hum after recap (40-160) - by Stan the Man - 05-20-2016, 06:07 PM

RE: Hum after recap (40-160) - by Stan the Man - 05-22-2016, 08:14 PM

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