Hello, I had my radio repaired by a local man who has since become ill an no longer repairs them. It worked right after I installed in the car but then it started cutting out on the reception and finally no reception and just a humming sound. When you first turn it on and it warms up you might get a station for about 5 seconds and then just hums again. Do you know what my proble is? I have another old radio with all the tubes in it except the vibrator. Could it be a tube?

Thank you Ray Mitchell

The humming sound is most likely the vibrator running, which is a good sign that it's getting power. Problem could be a tube, easy to swap with other set, just make sure you verify that the tube numbers are correct as you swap them one at a time. Swap them back if it doesn't fix the problem since it once played with the tubes you have in it. Also you need to check out the antenna, it could be bad and not receiving any signal.

:Hello, I had my radio repaired by a local man who has since become ill an no longer repairs them. It worked right after I installed in the car but then it started cutting out on the reception and finally no reception and just a humming sound. When you first turn it on and it warms up you might get a station for about 5 seconds and then just hums again. Do you know what my proble is? I have another old radio with all the tubes in it except the vibrator. Could it be a tube?
:
:Thank you Ray Mitchell

Hi,
It is also possible that not all of the caps were replaced at the time the work was done initially. Which would be consistent with the description, especially if you hear the vibrator through the speaker. A loose tube element can cause that too, as Gordo had suggested, but not as common, but corrosion on the tube pins or socket is possible too, and consistent with symptoms.

Checking the antenna is also a good idea, with the radio on, shake the mast back and forth- watch the base of the antenna mount to see if it moves at all, it may be loose too.

:The humming sound is most likely the vibrator running, which is a good sign that it's getting power. Problem could be a tube, easy to swap with other set, just make sure you verify that the tube numbers are correct as you swap them one at a time. Swap them back if it doesn't fix the problem since it once played with the tubes you have in it. Also you need to check out the antenna, it could be bad and not receiving any signal.
:
::Hello, I had my radio repaired by a local man who has since become ill an no longer repairs them. It worked right after I installed in the car but then it started cutting out on the reception and finally no reception and just a humming sound. When you first turn it on and it warms up you might get a station for about 5 seconds and then just hums again. Do you know what my proble is? I have another old radio with all the tubes in it except the vibrator. Could it be a tube?
::
::Thank you Ray Mitchell