Question about Hitachi UltraVision CineForm 55VG825 55" HDTV

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Hitachi Ultravision rolling horazontal lines

I have a 2000 52 ultravision that has rolling horazontal lines going through it all the time. I have tryed turning off electronics in the house with no help. What could this be? Thanks

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Anonymous

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Mine has the same thing when I have a Component AV S-Video Switch (one that can have muit- rca connections along with coax TV line on it ) the component switch caused interference and caused that line

Posted on Dec 15, 2007

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Probably a dry joint in the line timebase section if a tube type TV.

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Good Day, LDS also;
You may have a poor seated cable connector. Unplug TV from A/C, remove back look for a large black connector. It connects between the Main Digital Module and the Drive PWB. Re-insert both ends several times to make better contact, use contact cleaner if have but not always needed. Good Luck, big IRISH.

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1 Answer

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Could be a loose connection on the printed circuit board in the Vertical deflection circuit.
You would have to have a qualified technician to repair this problem.
A intermittent connection in the circuit described can cause a horizonal line across the screen.
You have to be careful and not leave the TV on for a period of time with a bright line, as it can actually burn a line on the CRT screens, which is permanent.

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52 hitachi ultravision


Yes, you can search these threads for the answer or ctechnicians.com

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1 Answer

Hitachi ultravision


Check IC601, C603 for leakage, I601 and vertical pulse detector QN05

for poor convergence check RK42 for open circuit.

Dec 20, 2007 | Hitachi UltraVision CineForm 55VG825 55"...

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