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Old 22nd Feb 2017, 7:40 pm   #129
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
Default Re: Tandberg Huldra 8 valve failure

Despite strong evidence that the EF89 is working, the measurement looks wrong, however, the fault is no audio at all and this is definitely not directly related to the EF89.

It would be useful to know if we are looking at a faulty meter or possibly a damaged mains transformer so let's get side-lined from tracking down the amplifier fault and make a few checks first:

1. What is the AC input voltage setting now?
2. Are you using a lamp limiter?
3. Measure the AC voltages on the secondaries of the mains transformer (see attached). Be careful as there are high voltages on the transformer.
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