Hi,
I can't remember how long it has been since I saw a yoke with an open winding (extremely rare in my experience), but one of the two vertical deflection windings (in parallel) is open!
I had to unsolder and separate the leads in order to make the test. At this time, I am not sure if the customer is willing to spend the money to have this set repaired since the yoke is very expensive.
Brad
In my service shop, I have a Panasonic TV model CT-27SL13G (mfg 07/03)
>with an odd symptom. The picture is about 6 inches high (black on top and
>bottom), but it is "warped" with a wavy edge (top & bottom).
>
> I checked electroylitics in vert. circuit. Regulated B+ is 130V, there
>is +27V at pin 2 (VCC) of IC451 (AN5522). I scoped pin 2 looking for
>excessive ripple, but found around 2V P-P ripple. I "rang" the yoke with a
>yoke tester (ok) even though I didn't think it is the cause. I replaced
>IC451 (AN5522), but the problem remains. It may be a problem in the yoke
>return (I have no schematic)? Did you have a problem like this?
>
> Thanks in advance, Brad
>
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