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Old 07-27-2023, 01:33 PM
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Username1 Username1 is offline
Not sure how I got here.
 
Join Date: Dec 2009
Location: Orange County NY
Posts: 3,586
Just to re-enforce what EM said the Color Killer to basically a do-dad that turns off
the color osc, & other color circuits when you are watching a B&W tv show. It was
found that if those circuits were not turned off while a B&W show was on, it produced
annoying color effects outlining items, or characters on the screen. One way to
Properly adjust the color killer knob is to turn to a channel broadcasting mosquito
races and turn the color killer knob until the races are only B&W. When you
switch over to a color program, it should work as normal & you see the
program in full color. Mosquito races can be found on any analog channel
that has no programing being broadcast.

I did not see any confirmation that this is that same Motorola TS-907 that you
have worked on before, but I suspect it is..... If the Local color osc. does not
sync with the burst signal coming in on the tv signal, you will get that
"barber Pole" effect on the screen. You should look over at the V21,
V22, & V23 tubes & that area for possible troubles.....
As always, without a scope, starting off with
voltage checks is the best idea, If all is
well with that, you can always tweek
coils, but document each move
down to the smallest mm.
And try to put them back
if it don't get better.
Remember 6GH8
Tubes are trouble.



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