03-13-2015, 04:00 PM
Mike
His speaker has no plug it's solder in.
Kirk
To measure the field coil measure the resistance from pin 7 of the 7Y4 to pin 3 of the 7B5.
The measure the primary of the output transformer measure resistance form pin3 of the 7B5 to pin 2. Should read a few hundred ohm.
Very unusual for the VC or the transformer secondary to be bad. The set isn't going to do much at all till you replace the 7Y4
Terry
His speaker has no plug it's solder in.
Kirk
To measure the field coil measure the resistance from pin 7 of the 7Y4 to pin 3 of the 7B5.
The measure the primary of the output transformer measure resistance form pin3 of the 7B5 to pin 2. Should read a few hundred ohm.
Very unusual for the VC or the transformer secondary to be bad. The set isn't going to do much at all till you replace the 7Y4
Terry
