[R-390] R-390a dead below 8 Mhz

[mparkinson1]

OK I will help jump start this reflector.
I have not seen to much action except on the Cosmo PTO issues.

So here it goes dead below 8 MHZ 
could it be T207 shorted or could it be the 100PF capacitor shorted under the transformer.
Could it be the Switch under the RF deck misaligned???
The RF train is aligned ok for 7MHZ plus. 
Could it be the 17Mhz osc dead not likely.
Hum did I miss something else please chime in guys this is good for the reflector archives just jump starting something else. 
This is a famous problem for sure.
Matt Parkinson Military Equipment & R 390A Depot Center