The picture rolls and I can not stop it. Is there an adjustment that can be made to fix this? On old TVs you had a vertical hold and a horizontal hold. This one does not. What is my solution?
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Yes you are correct, no days these TV sets have an automatic vertical hoild, and no I am sorry to say, there is no adjustment for you to make. there is a problem in the PIcture in picture circuit if there is one or the sync sepaqrator circuit has a problem. most likely a bad capacitor or a bad diode. This is a solid state set and there are no user replaceable parts inside them unless you know how the circuits work and can trouble shoot printed circuit boards. You are best to call in a pro to assist you in this repair. Good Luck
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The set is rather old--a old trick to use is to connect a fan to the rear of set with the back off--it may extend the life of the set and give you some more use out of it.
I have seen a lot of these sets and never one with the problem you describe. If only a picture top or bottom is missing it may be vertical or if you are seeing what looks like a full picture with top or bottom black it is a Blanking problem--may not be easy to find...........
this fault is caused by defective electrolytic capacitors in the vertical deflection circuits, they need to be changed out, do this before it causes more problems, there are no adjustments for this anymore.
Its not a problem you can easily fix. Many Mits TVs of the mid-90's had a PIP board in them that had dried up surface mount capacitors on them. The board would have to be either re-built or replaced at a considerable cost.
sounds like your color guns are out of alignment and need adjusting. its a cheap fix with a tv tech but i wouldnt recommend doing it yourself. plus, a visit from a tech can tell you if there is anything else wrong/about to b wrong
Does the Tv pick up a signal ? ( picture/sound ) If not, you may have a tuner problem as the screen will default to blue with no signal apparent. Could also be a cable problem. Hope this helps
Ed
NC Electronic
Mills, Wyoming
This may be a vertical hold control problem I'm not sure where the Vert. Hold potentiometer is on the mainboard. I would see if you can find someone who can locate it and adjust it.
Vertical sync is an IC function = shop repair = remove light box
and take it to a quality repair facility for an estimate = beware
of "Free Estimates" = pay for diagnosis, get it in writing.Mainly,
I'm finding bad solder connects in this style chassis,sometimes
I work on two or three at a time in my small repair shop........T.
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