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Old 02-15-2022, 01:45 PM
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bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
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Quote:
Originally Posted by old_coot88 View Post
That tube tester's veracity is questionable regarding an HK short in the CRT. If there were a heater-to-cathode short, it would kill the video signal going into the CRT as well as show a heavy hum bar (since the heater is 6 VAC away from ground, thru the 6X5's heater). In a case like this, the TV itself should be the best "tester" of the CRT.
You are correct. I had both F2 and K set to pin 2

So back to the drawing board. The tuner filament transformer and filter choke seem likely candidates. I could power the tuner with a separate 6 volt source.

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Last edited by bandersen; 02-15-2022 at 01:48 PM.
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