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Just had a flat screen plasma installed in our office. When it is powered from the outlet the screen rolls. When it is powered from a small UPS it stops rolling. The electrician said that it is not his problem.

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Hes right its not...whoever wired the building is responsible for the wiring, he did his job installing the tv where you plug it in is up to you

Posted on Dec 06, 2008

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It sounds like you have some piece of equipment in your office that is radiating AC interference back into the power line. The UPS would act like a filter to clean it up, but the set's power supply is affected when you power it directly from the line. One option is simply to leave the UPS there for the TV. Another option would be to try to determine where the interference in coming from. Find out what other equipment is on the same circuit as the TV and shut each item off one at a time until you see the TV clear up.

Posted on Dec 06, 2008

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Lines going through it and is very distorted


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Philips 42pf7320a37 Plasma TV. Menu appears without being requested remotely or manually. Must select Menu Remotely (or manually) to regain screen. Screen stays on for a few seconds or up to 20...


Check that this is not caused from a stuck button, or a defective remote recalling the menu.

If it is not the remote, then you will probably need to replace the control board or the button assembly.

Nov 01, 2008 | Philips Projection Televisions

1 Answer

"panasonic pt 50dl54 50 in rear screen does no show a picture


Try disconnecting all of your HDMI cables and plugging the power cord of the TV into another wall outlet. If this resolves the issue, you may have had a small power surge from either your wall outlet or one of your source devices. It is recommended to connect your TV to a surge protector if you haven't done so already.

Sep 13, 2013 | Panasonic PT-50DL54 50" Rear Projection...

1 Answer

I have a panasonic flat screen monitor that worked well untill recently. It switches on for a second with the green light on then it switches off and the red light starts blinking. Please advise.


Try disconnecting all of your HDMI cables and plugging the power cord of the TV into another wall outlet. If this resolves the issue, you may have had a small power surge from either your wall outlet or one of your source devices. It is recommended to connect your TV to a surge protector if you haven't done so already.

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1 Answer

My philips tv shuts off after about a minute.


If it's a flat screen, you may be looking at a bad power supply. Today's HDTV's usually have nothing more than a power supply and a small circuit board to drive the screen. You may be able to order the part from the manufacturer, but out of warranty, it may cost a pretty penny. The same thing happened to me with a Vizio HDTV, and when the tech arrived, I knew exactly what he had in his box. Even he didn't know which it was and had to replace the circuit board, he admitted if that didn't work, he would install the power supply. If you get a picture, your circuit board is likely okay, but if it just shuts off, check that you don't have too many devices plugged into an older outlet, if that's not the case, Power Supply would likely be the culprit.

Aug 25, 2012 | RCA HD52W59 HDTV Projection Television

1 Answer

On a plasma, what board would be responsible for performing convergence?


Hi,
Plasma TV does not have such thing like convergence or does not require convergence.
Plasma TV is flat screen and every pixel in plasma panel produce its own light to make color picture.
Convergence section is part of old fashioned rear projection TVs that has 3 CRTs to project color image on front screen of TV.
Hope this info will help you.
Let me know if you have additional question.
Thanks.

Jan 07, 2010 | Projection Televisions

2 Answers

Verticle black bars


Check the connections on the flat cables to the screen. Be sure first to disconnect the power supply from the x and y sustain boards before you disconnect any of the flat cables.you will burn the cables from the stored energy in the power supply, also check cables on c boards at bottom of screen. If this does not fix probably bad panel.

Apr 24, 2009 | Projection Televisions

1 Answer

30" samsung flat screen powers on but tv screen black. sound is good. Worth repairing?


It depends on what kind of t.v., plasma or LDC. and does the screen appear to light up or do nothing (if you turn off the lights, does it glow black like there is no signal or is there nothing at all?) If it is an LCD and the screen is bad then investing in a new one. A plasma might be worth fixing depending on how much a new one of comparable or better quality would cost. It doesnt sound like there is something wrong with the computer/board in it so that shouldnt need to be replaced.

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1 Answer

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Try disconnecting everything from the tv *except* the DVD player (that includes cable tv). You are using a component or digital connection, right? Some of these HDTVs are **** at displaying a composite feed. If this clears up the problem then the lines were probably caused by a fault in your cable tv, and you need to take it up with them.

ANYWAY, if the rolling lines remain even with everything else unplugged, it could also be electrical interference from something near by, like power cords or something.

Mar 24, 2008 | Projection Televisions

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