replacing 10 ohm wirewound potentiometer

[glynnw]

I think I have narrowed down a source of intermittent static in one of my 300B Paramounts to one of the 10 ohm wirewound potentiometers.  I plan to order a couple from Mouser along with a few other toys.  What wattage should I be looking for?

 

[Paul Birkeland]

A 5W pot will suffice.

Just as a side note - the control will produce a little static when you're adjusting it.  If the control fails, audio output will cease all together.

-PB

 

[Grainger49]

Glynn,

If you like really dialing the hum pot down to the lowest reading try a pair of these:

http://www.mouser.com/ProductDetail/BI-Technologies/AR10L5/?qs=gQBTb7UQo2KGWe6ugobfig%3d%3d

I put a pair in my Paramours.

 

[glynnw]

Holy shamoley - $66 each?  I'll think about it. But I am currently not able to hear the hum when adjusted right.

This evening I soaked the pot in question in Caig Deoxit and that seems to have worked, at least for the last hour .

 

[Doc B]

Yeah I was going to suggest exercising the pot. It hardly ever moves and sitting like that is what creates a noisy spot. twisting it a few times will often clean off the oxidation that has formed on the spot.