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Losing TV picture, screen goes blank,

ON/ Off light starts blinking (red) 3=4 blinks in a row TV switches off, We leave for 1/2 will go for 20/30minutes no screen discolouring just goes blank. We do not have a digital voltmeter

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  • 3,320 Answers

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.
Check the cables, connectors and connections.
Take it to a repair shop.

Posted on Apr 21, 2014

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SOURCE: my plasma tv switching off byself

Sounds to me like your internal cooling fans are not working. Try placing a fan behind your tv and seeing if it stays on longer. If it does then you'll know it's a problem with these fans. Not expensive to fix but not easy to do either.

Posted on Apr 10, 2008

SOURCE: Philips 42 in. Plasma shut down

Thank god we purchases the ADVANCED extended warrenty. This tv has been nothing but problems.

Fuzzy picture, picture shutting off after 20 sec coming back on and now blog of colors shut off never to come on again. 7 blinking red lights on the front. Waiting for the repair man again.......

Posted on Apr 13, 2008

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SOURCE: LG LCD Flat screen 32 screen blank red light blinking cable on

The Lg lcd was srtruck by a remote and now looks like a small crak on the inside towards the bottom right hand corner and there is no picture but audio does work

Posted on Nov 09, 2008

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SOURCE: Philips 42" Flat Screen Plasma - blinking red light 7 times - HELP please!

6f4eeb8.jpg
Here is a photo of the board where I have removed the two from my TV. You can see the two open holes.

Posted on Dec 12, 2009

  • 148 Answers

SOURCE: Display Standby/on light blinks red - screen will

Hi there, the green light upon startup means the circuit boards are powering up. At some point ( a bad capacitor in your case) the system "runs" into a bad component ( the capacitor) and this faulty component will shut the system down ( for safety reasons the tv has a built in device that trips the circuit when a problem is encountered), this in turn shuts down "the power-up" cycle and the unit shuts off and displays the red light again....You will need to call a professional to have the circuitboards checked out. You can, if you wish, open the unit and use my guide to help you locate and diagnose the most common problem with tv's having the symptoms you've mentioned....The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! If this helped you any (or not) then please rate...Also I am very interested in your progress with this issue.fb6651e.jpg

Posted on Feb 07, 2010

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