| Woodson 150-2 ( Kustom Line of Amps ) [message #27885] |
Sun, 11 October 2020 09:04  |
jammy5152
Messages: 62
Registered: May 2018
Location: Georgia
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Member |
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I understand that Woodson was part of the Kustom / Kasino line of amplifiers...Correct me if I am wrong....
I have a 60 cycle hum coming from the amp and I cannot find the schematic for this amplifier...
It is a Woodson 150-2 and the circuit board number is PC5116 which is not listed on the website Vintage Kustom
I have been told that the hum problem could be a grounding issue or the possibility of capacitor problems....
It has 2 large blue can capacitors in it which I have not tested at this time...I know without a schematic for it, is guessing at the problem....It has a 33uf @ 10% / 100 volt cap soldered in at the Master volume Pot which looks to be damaged which I am going to replace..( someone turned the front nut to tighten up the pot and broke the end off ...still works though )
Any ideas or help would be helpful......
[Updated on: Sun, 11 October 2020 09:05] Report message to a moderator |
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| Re: Woodson 150-2 ( Kustom Line of Amps ) [message #27887 is a reply to message #27885] |
Sun, 11 October 2020 18:10  |
chicagobill
Messages: 2006
Registered: April 2003
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Senior Member |
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I think the story that I heard was that Woodson was run by Bud Ross' brother-in-law. The basic build of the amps is very similar to the Kustom amps, but I don't think that there were any Kustom boards directly used in any Woodson amps.
If the hum is in fact 60 Hz, it could be as you said a bad filter cap or a grounding problem. You can try bridging another filter cap across each of the two main filter caps to see if the hum reduces.
You said if I understand it correctly, that there was a problem with a broken pot mount. The boards are grounded by the pot mounting hardware, so that may be a good place to look for a ground problem.
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