[Hallicrafters] Problem with HT-32A

[K4PRF - Burton Pratt]

This is a beautiful HT-32A with a big shiny Peter Dahl power transformer 
installed a few years back.  It was operating fine but just quit making 
any power.  I have checked all the voltages and tube base resistances.  
All are very close to specks.  I have to admit that I don't understand 
how the transmit keying is accomplished other than through the vox 
relay, cw key or calibrator control.  None of these are keying the 
transmitter.  No motion on the meter.  It is as if the RF power section 
was just turned off.  I think something is killing the bias control of 
the driver and output tubes.  When I try keying the transmitter I can 
hear the relay operate but the grid bias on the 6146s holds at around 
-49 volts.  I know all about the problem with the 5V4s originally used 
in the low voltage supply.  I use 5R4s in this transmitter and in my 
HT-37.  This transmitter is in original condition except for the power 
transformer and the bias diode.  All of the caps are original.  Tubes 
all check good on a TV-7 but I have substituted all with no change.  I 
have not touched the alignment at all .  I'll bet that I am not the only 
person that has run up on this problem so any suggestions will be 
greatly appreciated. 

73,

Burt,  K4PRF