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Old 05-23-2016, 08:38 PM
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jr_tech jr_tech is offline
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Indeed, on another forum Tom Albrecht said:
Quote:
I tried it on the Pilot TV-37 I have on the bench right now, and I can report that the fix works very well and doesn't seem to have any ill side effects. For my Pilot I found that a larger cap (820 pF) worked better than the 250 pF cited for the Motorola. Also, G1 of the CRT isn't grounded in the Pilot, but is connected to a DC restoration circuit. The modification still works fine (add a 220 K resistor in series with G1 of the CRT and add the cap from G1 to the vertical output tube). I'd recommend this fix to anyone who is irritated by seeing retrace lines whenever the picture contrast is low.
I think that this is the circuit that he is referring to (from Phil Nelsons site)

http://antiqueradio.org/art/Admiral1...ingCircuit.jpg

I would connect the cap to the CRT grid and the other end of the resistor to the dc restorer circuit. Other end of the cap to one of the plates of the vertical output tube.

jr

Last edited by jr_tech; 05-23-2016 at 08:53 PM. Reason: add info
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