Rolls vertically when i first turn it on stops after 20 min. i'm told it is the pip module and i can remove it and put in bypass chip . where is it located and where can i purchase part. thanks for any help.
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i have the solution. common problem. it has a pip module with defective (leaky) capacitors. they are surface mount capcitors. mcm has a mitsubishi pip module repair kit order number 32-11755 $14.95. 1800 543-4330 customer service 1877626-3532. www. mcminone.com
The problem you are having is a vertical deflection problem. The screen is being compressed to a thin white line. It's probably a defective vertical output module or transistor. This part is not too expensive. Less likely would be a vertical deflection coil, which would be more expensive because its usually glued to the picture tube and harder to replace. You'll need to take your set to service center to have it serviced.
Does you set have PIP (picture in picture)?
If it does then the PIP module has a bunch of capacitors that have gone bad (dried out and leaked) causing you to loose vertical sync.
Vertical synchronization is what locks your picture keeping it from rolling.
Even if you don't have PIP then still you have a vertical sync problem.
The set would have to be checked by a tech to find exactly what's happening.
is this a horizontal black line going up or down? if yes, this sympton is caused by a trouble in the integrated circuit or in the vertical oscillator circuit.
this symptons has 2 variations. one is the intermittent rolling of the picture. this referred to as the "loose vertical hold" the other variations is the continuous upward or downward rolling of the picture