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Volume keeps turning down on Samsung plasma TV. Also sometimes the not available signal comes up (as seen in video). Have taken battery out of remotes and they are not the problem. Is there a way to

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No signal is just that, set for what ever reason is detecting that, as far as sound going down by itself....

Keyboard issues and answers: A problem that is more common than most people think is an issue with buttons on the control keyboards of modern TV sets. Recently for whatever reason I have seen more questions about this so I have composed this answer and solution for these kinds of problems. It can be any button on the set-channel up/down or volume up down-you name it. The symptoms are the same: channel will scan up or down and will not stop-remote control has no effect on this---It can be channel, volume, or even input or menu if the set has those up front or on the side of the set. All these push controls have something in common-beneath each is a tiny momentary push switch-when pushed with the plastic button it performs a specific task (vol up or down etc.). What happens is the afflicted switch beneath the plastic button is bad-when released it is supposed to stop its function but does not. Keyboard or button controlled features have PRIORITY over the remote control, hence the remote will not stop this from happening. Both the remote and the keyboard go to the microprocessor in the se t but the keyboard is first in line. How to resolve this issue? Someone needs to get at the tiny pc board with the buttons and locate the one associated with the issue (ie sound or channel etc) and unsolder that switch from the board-usually just two pins (may be more for mounting only purposes) and then see if set does not have the issue with switch out of the circuit. For the TECH minded with the board out test here the switches with a ohm meter set to high resistance-any reading with button not pressed means a bad switch-seen ones that read 5,000 plus ohms-it may be necessary to unsolder more than one switch to locate the offender here but an open reading with switch not pressed is the rule. I have taken the time to compose this answer as some do not understand what is happening in these types of situations---No magic wand or smoke and mirrors here-have to disable the offending switch to know. The beauty (in my view) of this kind of problem is if found, you really do not have to replace any part-just operate the set with the remote with one button that no longer functions on the set itself-who could ask for more? SD TECH

Posted on Oct 31, 2012

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Remote control does not work for my plasma tv

I also had this same problem. Both the original remote and my universal remote failed to give any response on the TV. Normally the green light flashes when it receives a command from the remote. Called LG Support and they made me an appointment with a local repair company for 3 days later. This seemed pretty quick compared to other companies repair times I'd read about. However next day the repair company called to say it would be 5 more days before they could get a Tech to my location (downtown ATL). 8 days was a long time to wait but once tech arrived he diagnosed it to a bad board and simply went to his truck and swapped it out with mine under factory warranty. Everything has been fine since.

Posted on Jun 04, 2008

  • 1 Answer

SOURCE: Panasonic Viera TH-42PV7HS Plasma keeps shutting down

Hi to all, My 42" Panasonic plasma have the same problem. It turned itself off and now red light flashes 7 times, than after short pause 7 times again. And so on. Any ideas what is wrong??

Posted on Oct 23, 2008

dsacco86
  • 1077 Answers

SOURCE: 50" Vizio Plasma reads "No Signal" on all inputs?

Well, your TV is still under warranty. That's the good part.
The only thing I can recommend without voiding the warranty is leaving the TV unplugged for 30min. That way, the TV can reset itself and hopefully correct the problem.

If that doesn't solve the problem, it's time to use the VIZIO warranty.
Here's contact info if you need it.

Technical Support
Toll-Free: 877.698.4946
(877 MY V I Z I O)
Technical Assistance Emails:
techsupport@vizio.com
Customer Service
Toll-Free:888.849.4623
(888 VIZIO CE)

Posted on Jun 17, 2009

  • 304 Answers

SOURCE: Samsung 50'' Plasma TV won't turn on anymore

If your tv is within the one year warranty period then call 1-800-Samsung for warranty repair. Look at your tv purchase receipt for the Purchase Date. You have one year from the date of purchase to get warranty repair.

Posted on Jul 16, 2009

  • 6 Answers

SOURCE: Sanyo Vizon 42" Plasma DP42746 Was

This is a common problem with these TVs. You can download the official Sanyo repair manual for this TV (DP42746) at http://www.eserviceinfo.com/downloadsm/43343/sanyo_dp42746.html. I uploaded it here when I had the same issue with my TV last year. The solution is almost always to replace the Power Board (Y-Main) and the Upper and Lower Y Buffers. The parts and costs (from Sanyo in July 2009) are listed below (NOTE: Sanyo will not ship these parts to anyone but a repair shop): 1. V4 Y-Main (Y-Sustain) Circuit Board (Part # LJ92-01200A, Alt Part # LJ41-02759A) - USD $139.00
2. Upper Y-Buffer Circuit Board (Part # LJ92-01202A, Alt Part # LJ41-02760) - USD $64.00
3. Lower Y-Buffer Circuit Board (Part # LJ92-01203A, Alt Part # LJ41-02761A) - USD $64.00
Sanyo charges USD $10.50 for shipping, which brings the total cost for parts to USD $277.50. From my research, a shop would probably charge between USD $500 and $700 to do this repair. FYI - there is a class action lawsuit pending against Sanyo for this issue. The V4 Y-Main (Y-Sustain) Circuit Boards fail VERY frequently in this TV due to overheating. Hope this helps.

Posted on Aug 07, 2010

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