I'll check and see what's in there. And when I take
them out, I'll sell them on e-bay to an audiophool!!
(No affiliation with the seller!)
On Friday, December 6, 2013 11:27 PM, Chuck Harris
>Most of the time with the 545, the problem is the
black beauty oil/paper
>tubular capacitors used for the HV filters. They
always go bad, and if
>they haven't been replaced, you must replace
them. Ceramic is fine.
>There is also a BB cap that is in series with the grid
>and another in parallel with the plate winding. Both
>Daniel Koller wrote:
>> The recent discussions on HV repairs has me
thinking I should look into the issues
>> in my 545 (not A or B, old style square case).
It works very very well, but
>> about half of the time, increasingly more, the HV
circuit will not oscillate. If
>> I pull the plug-in out and drop it back in, it
will work. I know this is not a
>> recommended option! Alternatively, if I shut it
off and wait for it to cool, it
>> will work when I turn it on with about the same
probability, or a little less.
>> Once the scope is on it's up to spec.
>> The 6AU5 is not brand new, but is good. It was
replaced recently with no
>> So, suggestions as to where to start on this
intermittant problem are welcome. Is
>> there anything I should look for or measure that
might indicate what is getting