Hi:
Can you tell me where I can purchase a 6 meg center tapped volumne control switch combination
I have a model 46-1209 code 121 badly in need of a replacement. Thank you

Great that you gave the model number, but without a manufacturer name, this does not help much. Are you sure that it is a 6 meg control? That's awfully high. If you're measuring 6 meg, that's one thing--could be a fault with the control or it could be that your meter is misadjusted. If the circuit diagram actually calls for a 6 meg control, then that's the real thing, though that value seems really strange.

What is wrong with the control anyway?

Thomas

:Great that you gave the model number, but without a manufacturer name, this does not help much. Are you sure that it is a 6 meg control? That's awfully high. If you're measuring 6 meg, that's one thing--could be a fault with the control or it could be that your meter is misadjusted. If the circuit diagram actually calls for a 6 meg control, then that's the real thing, though that value seems really strange.
:
:What is wrong with the control anyway?
:
:Thomas

::Great that you gave the model number, but without a manufacturer name, this does not help much. Are you sure that it is a 6 meg control? That's awfully high. If you're measuring 6 meg, that's one thing--could be a fault with the control or it could be that your meter is misadjusted. If the circuit diagram actually calls for a 6 meg control, then that's the real thing, though that value seems really strange.
::
::What is wrong with the control anyway?
::
::Thomas The radio is a Philco.I have the schematic and it shows it to be 6 megs. The original problem was a noisy volumne and a switch that would not turn on. I bypassed the switch and cleaned the control. After I compleated the rest of of the capacitor replacement I removed the switch from the control and after takeing the switch apart several times the tabs which fastened the switch to the control broke off. Thr control is the carbon disc type which was still noisy.
I am sure I have miss led you. Six megs is high for volumne control. The switch is piggy back with the tone control.I installed a 1 meg temperary but it distorts the sound.

Well, what to do about noisy controls is...examine the carbon resistance piece. If it appears worn and the control uses the normal two spring slider (each spring faces in the opposite direction), gently bend each spring out to a larger diameter. The springs should rest inbetween their old paths, which should be unworn. Then you may either paint the surface with an extremely thin layer of WD-40 or you may use servo grease or di-electric grease. I have never tried graphite grease (gray grease used for lubricating wheel bearings and chassis parts on automobiles). You can experiment with this type of grease sometime if you wish, but for now, stick to the three previous lubricants.

Now, since you accidently broke off the metal tabs, what you can do is put the control together and carefully run solder between any metal surfaces that meet between the housing and the shaft support. Small beads will do. Before soldering, be sure that the surfaces you want to solder are sanded or steel wooled clean.

You can check www.tubesandmore.com for miscelaneous volume controls. They have some random old stock controls. I don't recall ever seeing a 6 meg, though.

How does the 1 meg distort the audio? Let me know.

Thomas

I can see how a lower resistance would distort the audio. With the input of the first audio tube on one side of the control and the output on the other side of the control, that would make for some distortion ...but with the original control, that's quite the circuit. Makes for an elaborate tone control.

T.D.