04-04-2013, 07:14 AM
Good morning, all
Well, the bads micas don't appear to be an issue, but I do have low voltage. The values appear to be about half of what they should be.
All paper/wax and electrolytics have been replaced with correct values. voltage is 120 ac with a variac. Tubes all tested good when I tested them with a tube tester.
Using the section 1 trouble shooting guide from the service manual, I get the following readings:
Test point A 82.7 (167)
Test point C 110.0 (214)
Test point D 97.0 (181)
Oscillator:
Pin 3 51.8 (110)
Pin 6 52.7 (115)
Pin 7 2.9 (4.2)
R102 reads 166K (120K); it's a leakage resistor.
After the recap last week. I powered it up and did hear a faint signal from the local station.
I am thinking I now have a bad 50X6 tube. Any thoughts?
Terry
KE5YUM
Well, the bads micas don't appear to be an issue, but I do have low voltage. The values appear to be about half of what they should be.
All paper/wax and electrolytics have been replaced with correct values. voltage is 120 ac with a variac. Tubes all tested good when I tested them with a tube tester.
Using the section 1 trouble shooting guide from the service manual, I get the following readings:
Test point A 82.7 (167)
Test point C 110.0 (214)
Test point D 97.0 (181)
Oscillator:
Pin 3 51.8 (110)
Pin 6 52.7 (115)
Pin 7 2.9 (4.2)
R102 reads 166K (120K); it's a leakage resistor.
After the recap last week. I powered it up and did hear a faint signal from the local station.
I am thinking I now have a bad 50X6 tube. Any thoughts?
Terry
KE5YUM
