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DuMont RA-112 TV: Next Project
TV MAN
Phorum Expert
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Posts: 1,127
Threads: 78
Joined: Jan 2014
City: Annapolis, IL
#13

05-06-2022, 10:21 AM
Your arcing could be the silver mica disease in one of the IF cans. Some have the mica caps in the base of the can and can fail, causing arcing, static etc. They can be cut our/disconnected and regular micas soldered in. I oft do TV's in steps against the advice of some. Makes it easier to find any errors. I usually start with the power supply, then horizontal, vertical and sound in that order. Keep the brightness and contrast turned way down just in case you power up with no vertical sweep, and in some cases, no sweep at all. It may save you burning a line or spot on your tube.
If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44
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Messages In This Thread
DuMont RA-112 TV: Next Project - by Greg - 10-07-2021, 10:53 PM
RE: DuMont RA-112 TV: Next Project - by GarySP - 10-08-2021, 10:10 AM
RE: DuMont RA-112 TV: Next Project - by Greg - 10-08-2021, 12:34 PM
RE: DuMont RA-112 TV: Next Project - by MrFixr55 - 11-08-2021, 03:00 PM
RE: DuMont RA-112 TV: Next Project - by radiorich - 11-08-2021, 07:56 PM
RE: DuMont RA-112 TV: Next Project - by Greg - 03-04-2022, 11:39 PM
RE: DuMont RA-112 TV: Next Project - by Greg - 05-05-2022, 09:02 AM
RE: DuMont RA-112 TV: Next Project - by radiorich - 05-05-2022, 09:21 AM
RE: DuMont RA-112 TV: Next Project - by Greg - 05-05-2022, 09:29 PM
RE: DuMont RA-112 TV: Next Project - by TV MAN - 05-06-2022, 10:21 AM
RE: DuMont RA-112 TV: Next Project - by Greg - 05-12-2022, 10:52 PM



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  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)