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My Samsung flatscreen tvs red light keeps blinlume goes down to zero on its own and we cant control iy

Posted by barbara on

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Anonymous

  • 18 Answers

SOURCE: ps2 light gun problem

it'll work just make sure you've got the right one or size or check the wires to find a slit or puncture

Posted on Feb 01, 2008

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Anonymous

  • 608 Answers

SOURCE: samsung 62" flatscreen suddenly stopped

I had a similar problem with my 42 in Philips LCD HDTV.
Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV(warranty was expired ofcourse) and found four bulged capacitors. Many electronic companies were sold capacitors that failed in 2-5 yearsinstead of 10-20. The capacitors failprematurely due to a lack of preservatives. Unfortunately, they were installed in allsorts of devices. Here are some options . 1. 1. Have it fixed by a professional 2. 2.. Dig into your TV, find PSB, Check for faultycaps. If you find some(bulged orleaking) bad caps replace the entire board 3. 3. Remove and then replace individual faultycaps. This takes some solderingskill. Caps are inexpensive and if you can take care of it yourselfit will save you hundreds.
Hope this helps

Posted on Dec 10, 2010

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SD Tech

SD Tech

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SOURCE: Samsung le46 lcd tv sound goes down to zero when turned back up returns to zero imediatly bar stays on scrreen showing zero

Listen carefully:

The volume down is likely bad on the set, this happens a lot and I will explain why and what needs to be done.

All sets with exterior controls, volume, on/off you name it behind each plastic button is a tiny switch---a push switch that when released stops.

Bad ones develop not from age but poor quality,,,,that is a momentary switch, as long as held it should function and when released stop.

Be thankful it is not the sound UP as I have seen that, Menu, you name it.

Now to the proof and the solution, Someone has to gain access to that switch under that plastic button and remove it from the small circuit board it is soldered into---2 to four solder connections and remove the switch.

A ten year old with a soldering iron can do it.


With it removed power set back and see, if problem gone you have a few choices (really no choice if it was me) order and replace the entire board with all the buttons affected or DO NOT PUT THE BAD SWITCH BACK AND just use the set with the remote.

For the technical minded first the reason a remote will not stop this is buttons on the set have priority over the remote functions and YES you can test the bad switch and find it that way---I have seen ones not being pressed that read as low as 3 thousand ohms or less and that is bad=====there should be no reading across the two pins that are for that switch itself.

Let me know if you have questions, PS none of them sell the individual parts you have to buy the same poor quality board with another set of switches on it.

Posted on Dec 11, 2012

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I have a 43” flatscreen tv that turns on using volume buttons and turns off same buttons. Volume goes to zero by itself too. Sometimes change channel by itself. I’m sure it’s a control board problem but...

Hi Stephen, yes, it is almost certain that the problem is in the function or control board, usually there is a surface capacitor (SMD) that goes into loss and causes these failures
Another possibility, would be the remote control, which works erratically, remove the remote control or keep it in a closed place and check if the fault continues
Comment the results
Greetings Franco Dosil

Hola Stephen, si, es casi seguro que el problema esta en la placa de funciones o control, por lo general hay un capacitor de superficie (SMD) que entra en perdida y provoca estas fallas
Otra posibilidad, seria el control remoto, que funciona erratico, retira el control remoto o guardalo en un lugar cerrado y verifica si continua la falla
Comenta los resultados
Saludos Franco Dosil
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