11-30-2013, 09:24 PM
Hello to all ! Just completed recapping a Philco 37-611./ This is a transformerless receiver. I replaced the paper caps, the electrolytic caps, and both bakelite assemblies. I had to replace the on/off switch (and I'm guessing this is also some sort of tone control as well).
After powering up, (no smoke, no flames)
All of the tubes were glowing but no sound from the speaker. Just the slightest hint of a hum.
I took a measurement of all the tube voltages, hoping maybe one of the more experienced members could shed some light as to the cause of the problem using the tube voltage information.
They are as follows:
25Z6G
PIN 2 = -129.3
PIN 4 = +105.7
PIN 7 = -385.2
PIN 8 = +105.7
25A6G
PIN 2 = -385.3
PIN 3 = +1.23
PIN 4 = +1.23
PIN 7 = -310.5
PIN 8 = +7.04
6A8G
PIN 2 = -310.5
PIN 3 = +106.5
PIN 4 = +14.65
PIN 6 = +1.21
PIN 7 = -233.6
PIN 8 = +1.20
6K7G
PIN 2 = -112.2
PIN 3 = +106.9
PIN 4 = +14.87
PIN 7 = -232.2
PIN 8 = +14.02
6Q7G
PIN 2 = -0.1
PIN 3 = +103.8
PIN 4 = +10.7
PIN 5 = +13.34
PIN 7 = -111.2
After powering up, (no smoke, no flames)
![Icon_thumbup Icon_thumbup](https://philcoradio.com/phorum/images/smilies/icon_thumbup.gif)
I took a measurement of all the tube voltages, hoping maybe one of the more experienced members could shed some light as to the cause of the problem using the tube voltage information.
They are as follows:
25Z6G
PIN 2 = -129.3
PIN 4 = +105.7
PIN 7 = -385.2
PIN 8 = +105.7
25A6G
PIN 2 = -385.3
PIN 3 = +1.23
PIN 4 = +1.23
PIN 7 = -310.5
PIN 8 = +7.04
6A8G
PIN 2 = -310.5
PIN 3 = +106.5
PIN 4 = +14.65
PIN 6 = +1.21
PIN 7 = -233.6
PIN 8 = +1.20
6K7G
PIN 2 = -112.2
PIN 3 = +106.9
PIN 4 = +14.87
PIN 7 = -232.2
PIN 8 = +14.02
6Q7G
PIN 2 = -0.1
PIN 3 = +103.8
PIN 4 = +10.7
PIN 5 = +13.34
PIN 7 = -111.2