Greetings and Happy New Year. I'm going to start the new year by getting my 811K running. It has a defective volume control. RCA part number is 72558-44 and malory rreplacement is MRY449. Does any one know the specs. on this one and what I can use as a replacement? Thanks in advance, Dave G.

:Greetings and Happy New Year. I'm going to start the new year by getting my 811K running. It has a defective volume control. RCA part number is 72558-44 and malory rreplacement is MRY449. Does any one know the specs. on this one and what I can use as a replacement? Thanks in advance, Dave G.
:
Opps that Malory number is MRT449.

Hi Dave,
Getting an exact replacement can be difficult. Getting the ohmic part is easy, but shaft length and spline arrangement is the hard part.
I had a DeWald C-800 with a totally wrecked volume control. I cut the end off of it and attached it to a new one using JB Weld and heat shrink tubing. It seems to have worked well.

Best Regards and Happy New Year,

Bill

:Hi Dave,
: Getting an exact replacement can be difficult. Getting the ohmic part is easy, but shaft length and spline arrangement is the hard part.
: I had a DeWald C-800 with a totally wrecked volume control. I cut the end off of it and attached it to a new one using JB Weld and heat shrink tubing. It seems to have worked well.
:
:Best Regards and Happy New Year,
:
:Bill
:
This is a 2Meg volume, with a bunch of other stuff hooked on the shaft. How about I disconnet the faulting volume section and remotly locate another volume control. Do I need to do any filtering on it so I don't pick up noise? I'd like it to work without needing any authentic restoration. all of the automatic channel seaching works great (or at least as good as it ever did. Thoughts.

::Hi Dave,
:: Getting an exact replacement can be difficult. Getting the ohmic part is easy, but shaft length and spline arrangement is the hard part.
:: I had a DeWald C-800 with a totally wrecked volume control. I cut the end off of it and attached it to a new one using JB Weld and heat shrink tubing. It seems to have worked well.
::
::Best Regards and Happy New Year,
::
::Bill
::
:This is a 2Meg volume, with a bunch of other stuff hooked on the shaft. How about I disconnet the faulting volume section and remotly locate another volume control. Do I need to do any filtering on it so I don't pick up noise? I'd like it to work without needing any authentic restoration. all of the automatic channel seaching works great (or at least as good as it ever did. Thoughts.
:
Hi David,
Consider this. Perhaps the worn out part of the pot can be scavenged from a good one. That is another way of handling it. Often the resistor and contacts are the same size.
As for sheilding, you have aked a good question. The signals in a volume control are high impedance and are susceptable to hum interference. The body of any new volume control will need to be grounded. Lines going to a new volume control may need to be shielded. Try it first without, but don't be surprised if you get hum interferences.

Best Regards,

Bill

You could try Mark Oppat.

http://www.oldradioparts.net/controls.html