[rghines1]

Here's an opportunity to do some real detective work!

Start out by disconnecting R7 so it doesn't overheat.
Begin disconnecting B+ wires that enter into this area of the radio.
Obvious choice is the wire that connects to R17 and see if the voltage is still present up to R7. Keep disconnecting wires until the R7 voltage is much improved. Not hard to make a solder bridge, etc.

You'll have it figured out in no time!

Richard