46-1226 run 122 with squeal

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46-1226 run 122 with squeal

Jim Dutridge
Senior Member

Posts: 317
Threads: 62
Joined: Mar 2007
City: Toledo State, Province, Country: OH

12-21-2010, 09:11 AM

This radio has been recapped and all OOT resistors replaced. When brought up on a variac with the volume control turned completely down, the radio will squeal loudly once the current draw reaches around 460ma. If I turn the volume up slighlty the squeal will stop, but returns has the current draw continues to increase.

I have not moved any wires except for extending 2 B+ lines to reach the new terminal strip holding the replacement filter capacitors, and these were run right next to the chassis. I suspect I might have a bad volume control but I don't know what the value of the tap is. Right now it measures just over 1 MEG on this 2 MEG control. The Sams, 15-24, does not show the value. The part is an original Philco part, #33-5535-1. Anyone know what the tap value should be? Thanks.

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46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 09:11 AM

Re: 46-1226 run 122 with squeal - by Ron Ramirez - 12-21-2010, 09:37 AM

Re: 46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 10:22 AM

Re: 46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 01:52 PM

Re: 46-1226 run 122 with squeal - by Ron Ramirez - 12-26-2010, 09:22 AM

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