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Old 03-21-2017, 08:07 AM
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DavGoodlin DavGoodlin is offline
Motorola Minion
 
Join Date: Aug 2011
Location: near Strasburg PA
Posts: 3,400
I cleaned all the pots with deoxit, rotated each 20 times end to end as usual. While observing the bendy picture (normal raster) the AGC control had the usual effect: at CCW end blank raster, picture and sound suddenly appear at 1/3 rotation, getting normal contrast at 2/3 and even more bending-overload at full CW.

What does not add up is that while I had the meter on the AGC tube plate, rotation of the control varied the voltage and only AFTER doing that and then looking at the screen instead of the meter, the picture was close to normal and then horz and vert lock were excellent over the range of the hold controls.

Ill see what happens after I replace the focus resistor - a clearer picture may indicate remaining issues. I actually want the trouble to reappear WHILE the chassis is on the bench and not back in and all buttoned up.
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Last edited by DavGoodlin; 03-21-2017 at 01:20 PM. Reason: removed dbl negative "not"
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