Question about Samsung LE40R73BD 40 in. HD-Ready LCD Television

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Samsung le46 lcd tv sound goes down to zero and wont stay up

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Under each of the plastic buttons on the set there is a tiny push switch--the plastic button activates it---it is a momentary switch and when the button is released it should stop its function.

A lot do not--fail: vol up is worst but can be any of them. The way to prove this is get at that switch (vol down in your case) which is usually on a small circuit board---unsolder the two pins for that switch and remove it.

If problem gone you know what it was---you really do not have to replace it as the remote should duplicate all functions of these switches---in some cases the remote will not control or stop this---front controls have priority over the remote.

Posted on Dec 08, 2012

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SOURCE: 32 inch Samsung LCD TV has no picture

do this test, turn tv on and touch the screen if you can see light in the background it is the panel if no back light is present then it is the power board.

Posted on Mar 15, 2008

blueextc3221
  • 15935 Answers

SOURCE: samsung 27" lcd tv picture goes black, still have

0ne of 3 has failed:
(in order of probability):

1. Backlight inverter
2. Power Supply
3. Backlight

Please seek the expertise of an experienced TV repair technician - as they contain potentially lethal voltages that must be properly discharged before work can begin.

Thanks!(*&^%

Posted on May 27, 2011

SOURCE: Samsung LCD TV backlight switched off

Most likely you will need to get a diagnoses done on the set. It could be a faulty 24vdc circuit (power supply capacitors), defective inverter, or a failing CCFL backlamp.

Posted on Oct 29, 2012

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My 19" Coby hdtv 's sound will NOT stasy .Itgoes down to zero and when I put it back up ,either remote or on tv itself ,it goes up then immediately goes back down to zero .


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remove batteries from remote control and adjust volume to desired level. If the volume stays the same then there is a problem with the remote. If the volume lowers again then the problem is with the TV. the volume button on the TV or on the remote may be malfunctioning. Hopefully it will be on the remote. If it is the remote, take it apart and clean it with damp cloth. after allowing it to dry, re-assemble and try it out.

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1 Answer

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.

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