[R-390] R390A Non-working BFO fix

[Brian Vietri]

Hello all,
My R390A bfo never worked, all other functions normal, to make a long story short here is what I found: V505 Plate/Grid voltages started out at 225 vdc and went to about 40 volts on the plate/ 75 volts on the grid within 45 seconds from power on.(I believed the tube was on hard)
no - feedback from bfo assy. Sure enough when I pulled BFO assy, after removing cover, two little brass screws were loose on the back, one was tap for 60 uh coil, resoldered connections, tightened screws ALL OK NOW.
Hope this can help someone!
Brian WB7QDR