[R-390] Help Me for R390A

[DLBMRA/Gianfranco]

Hallo,
 J have a R390A, suddenly does not receive nothing,
alone noise, if i put in function the Filters hears to
Vary itself the noise (wider or more squeezed) but
does not receive nothing.  I how I can find the Broken
one, besides how I can dismiss the Valve V207 ( 
5654/6ak5 ) experience it? 
The problem   is able to be the Valve (RF  Amplf. 6DC4
) or the 1 VALVE Mix V207 ( 5654 /6AK5) OR OTHER


 Thanks of all Frank


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