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Goes from good picture to gray and small lines then back to good picture

Comes on plays good, then picture starts with lines on face then all gray with small lines, then comes back on

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Check capacitors in the power supply. They dry out with heat and most of time they bulge on the tops. Replacing them should fix the problem. The power supply voltage varies causing the problem you describe. Let me know what happens.

Posted on Mar 02, 2008

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Posted on Jan 02, 2017

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Picture goes black with gray fuzzy lines ~ 1/2" apart horizontal.


If your LCD TV or monitor has stopped working, or is displaying one of the following
symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can
examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life
of your monitor or TV by several years.
Take it to a repair shop.

Apr 05, 2014 | Sanyo DP50749 50 in. Plasma TV

2 Answers

LG tv is in protection mode, I guess. Can get it to work sometimes for a few hours, but always turns itself off and power light blinks red after that


Hello People, I have today took the back off from my LG 42LD450 TV. I had problem like screen goes from picture to like white or green lines. The tv has no functions then auto shuts off with red blinking light. I was concern and I notice my main power supply cord. The several gray little cords bind together are badly chewed. plus a black cord that is chew too. a more thicker cord. I indicated that if I replace these wires, perhaps my tv will start working correctly.. Yes we have little mice issue and this tv sucks cause there a small space were the stand goes at. can't close it either. Here's some pictures I took. sorry if blur. battery was low at the time. couldn't get flash or phone to focus.
20170522_214340 copy-n1wp1d2yjqbukp0mguo5hfo5-3-2.jpg

20170522_212905 copy-n1wp1d2yjqbukp0mguo5hfo5-3-5.jpg Anyways I would try to look at these wires if you are having same issue.. I found the gray wire only cost $25. So I'm guessing the larger wire be around $25 or $30+ I hope this helps anyone that having this issue. Good luck and hopefully good luck to me.

Jun 11, 2012 | LG 42LD450 42 in TV

1 Answer

Problem with picture on HP Plasma TV


hello!
This is known problem with PDP displays. That means: one of X-buffers has bad connection to the PDP(plasma display). Or, in some cases, depend on PDP type, it could be panel itself at fault. You need to open your set carefully and get an access to X-buffers. Usually, at the very bottom of PDP, covered with aluminum heat sinks. By turning set on, while face down, start tapping slightly with isolated handle of medium size screwdriver. Observe, when line(s) vanished. That's where connection(ribbon cable) between PDP and X-buffer is compromised.
In some PDPs, those integrated into panel itself and nothing you can do, except to live with that or replace panel. Hope, you end up just reconnecting ribbons. Anyway, you must have very good technician background to do so.
good luck,
Alex.

Feb 16, 2012 | Televison & Video

1 Answer

White lines across tv screen


Without seeing the lines I can't be sure what your set has wrong, but here are a some possibilities:

If the lines are lines are confined to the top inch or two of the screen and the picture looks otherwise normal, the trouble is bad capacitors in the vertical output circuit. Fixable by replacing the bad parts.

If diagonal lines are across the entire face of the picture tube and the picture looks washed out, the trouble is often a bad capacitor on the 200-volt line to the picture tube. This may be on the main circuit board near the horizontal output transformer, or on the small circuit board plugged onto the end of the picture tube. Again, replacing the bad capacitor can fix this.

If your TV is actually an RCA, someone may have bumped a rear-panel adjustment. On the back of the TV near the bottom right are two small knobs. RCA left these adjustments exposed inside of putting them inside the set like other manufacturers. These sometimes get bumped if someone was behind the set cleaning, or if a pet got back there and hit them with a tail. The top knob adjusts focus, and the bottom knob adjusts something called G2 or screen voltage. If this gets turned up too high it can cause the faded picture and diagonal white lines. Turn the adjustment down until a black screen looks black instead of gray.

A bad picture tube or horizontal output transformer can also cause lines through the picture. If this is the case with your set, it's time for a new TV. The transformer is relatively inexpensive but labor costs aren't, and the repair bill may exceed $200. If the tube is bad, there's no point even considering repair. The tube cost alone exceeds the cost of new TV.

Hopefully your lines are easy and cheap to fix. Good luck, and thanks for using Fixya!

Jul 22, 2011 | RCA F35673MB 35" TV

1 Answer

The picture goes to gray after an hour or so. Sound still works, but no picture. Picture starts to go bad...then goes gray. Is this a heat issue? Work good for about one hour...then goes gray.


When it goes gray, means that the T-CON goes bad after warm up or it does not receive the 12vdc feeding it from the main board, or the main board is bad, try running the TV with the back open with small fan blowing in the back, otherwise you can get a can of cold spray for electronics troubleshooting fro Radio Shack or repia shop and try cooling the T-CON bord or the main logic board with it to see will the pictures come back on. Also check the power supply for bad DC filter caps.
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

Aug 08, 2010 | Polaroid FLM-3201 Television

1 Answer

Horizontal grey lines running whe camcorder in play mode


Its symptoms of dirty / clogged video head. Please use Sony video head cleaning tape to clean video head.

Jan 28, 2009 | Sony Handycam DCR-TRV140E Digital...

1 Answer

My Cannon ZR200 was working good but now when I play back my dv tape there are 5 gray lines on my camera screen and the tv if I play back on the tv, I can play that same tape in my brothers camera with no...


It sounds like your saying the gray lines are appearing on your camera and on the tv when you play from the camera but not on your brothers camera. It sounds like your heads are dirty. Get a head cleaner and you should be good to go. Please take a moment to rate my solution fixya.
Thanks and enjoy,
Lee

Dec 07, 2008 | Cameras

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