[HAM] Relay problem?

[Luther Nallie]

Thanks for all the help.  I pulled the amplifier out of the 122 and cleaned the contacts on the relay and also cleaned the pins on the 12AU7's and so far it is doing fine.  I appreciate all the input.
   
  Luther
  

Brad Baker <b3jazz at gmail.com> wrote:
  On 9/16/06, Brad Baker wrote:
>>
> Measure the DC voltage to ground across R12, That's the large
> sand-filled 150 ohm power resistor that sticks up through the hole in
> the chassis. It should read around 25V. In old amps, leaky coupling
> and other capacitors can cause this voltage to rise (also output tubes
> start glowing). I've seen this cause intermittent relay switching.




 		
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