[R-390] no internal noise peak

[Steve Toth]

I decided to check the IF noise level adjustment on one of my R390A's per Chuck Rippel's technique in the Pearls  - no antenna connected, receiver set to 15.2 mhz, function switch to MGC, Bandwidth to 4khz, RF gain to MAX,, Line Meter switch to -10db, Line Gain control full CCW, then peaking ANT TRIM for max noise on the Line Level meter prior to setting the IF gain control.
 
The antenna trim can get noise peak with an antenna connected, but cannot get a noise peak with no antenna connected.
 
Looking so far in the Pearls what I've found is either "RF misalignment" or "a failure in the RF deck".  From looking at the schematic it would appear that T201-T206 need to be checked for alignment?

 
I'm sure somebody has had experience with this.  Suggestions?  (I did find a 6CB6 in the RF amp tube socket and replaced it with a 6DC6).







-- Steve 
"DON'T PANIC!" - front cover of the Hitchhiker's Guide to the Galaxy