skillybob
03-21-2011, 10:58 PM
I bought a Sencore CR161 CRT tester on ebay but I am having trouble with it. There is a 1k wire wound pot that controls the filament setting. I think this is a 2 watt unit.The pot is completely fried. It is marked Clarostat A43-1000. I can't find a direct replacement for this part but Mouser has something similar that I think I can use. Would anybody have a schematic for this unit? I don't know what caused the pot to burn up but I can not see any other components that are damaged. When I bought the unit it came with a tube setup guide for the various tube types but no info on how to use the tester and no schematic for parts replacement. Any help is greatly appreciated. Thanks.