Question about Televison & Video
It is like a vertical and horizontal hold go out. Once I turn the unit off for awhile I can turn it back on and it will work.
I can open the unit and change boards and also have a place to buy parts and get the part numbers.
Is it vertical roll? Or horizontal roll? It could be both.
This is caused by loss of vertical and/or horizontal synchronization of the scanning lines that produce the raster.
It is usually caused by a defect in the electronics section called the deflection circuitry.
You may be able to adjust it back enough to get it working if you can
find the vertical or horizontal "hold" controls (they may be called by
some other name). They are sometimes seen at the on-screen display
section, sometimes on the front or back panel and sometimes inside the
back cover. On newer sets it is factory fixed and their are no user
adjustments. So, you might have to poke around until you find them.
If you cannot find them, or if you do find them and they don't adjust
enough to lock in the picture then you will need servicing and the cost
will be to replace the IC or transistor that produces the hold lock on
the deflection system.
Hope this leads you the right direction.
Good Luck
If my solution proves useful please accept it.
Regards
Arjun
Posted on Mar 31, 2009
Check the power voltage .may be its an over voltage problem that is going in to the main board so due to that the component getting over heated and due to that this is happening.check out the pcb board voltages.this will clear the doubt.
Posted on Mar 26, 2009
It sounds your TV lose Video Sync signal during function and get video sync signal back when you give it rest.
Possible cause can be lose connection or dry solder joints in video signal section. It would be fine if you post / comment back with model and brand of TV.
Posted on Mar 12, 2009
In my opinion, problem is in Main Board of Vizio TV.
Please click Shop Jimmy and see main unit of this TV including price info.
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Usually answered in minutes!
This is a Vizio 47" LCD Model Number: VO47L HDTV10A
I ordered the part, I will let you know how it goes.
Thanks
So, I replaced the main board and I get the same thing. What next??
So, I could not find my Voltage meter. I had to go buy one. I have checked all the power and it is well with in range (24va required, output is 23.5va)
What now?
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