Question about Philips 20MF605T Television

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Samsung Syncmaster 741MP

Hi All of a sudden the sound on our LCD tv has gone. We've checked all the cables are in correctly and even though the picture is perfect we have no sound.

Posted by firecon on

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  • captaingriff Nov 26, 2007

    Have exactly the same problem. Only a month old and has never been dropped / damaged.

  • mermik Jan 26, 2008

    I have the same problem. Sound from the connected PC is OK, but tv has no sound, not even on the headphone-out socket.

  • markflyer Feb 10, 2008

    Same problem, sound just stopped, monitor is just out of guarantee!

  • Anonymous May 02, 2008

    I have the same problem with the 741mp SyncMaster. This is my second one as the first tv sound went during warranty. Unfortunately this one is out of warranty. Anyone have any idea what it may be.

  • Anonymous Mar 26, 2014

    NOOK NO PICTURE OR SOUND

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2 Answers

Anonymous

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I workin in the factory in tijuana mexico this trouble sometime its the solder defective in the ic amp good look

Posted on Aug 29, 2008

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Anonymous

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Similar problem was solved by transporting the wrong TV some tens of kilemeters by a car :-) Maybe there was some junction error inside, or a longer power-off state was needed to fix the problem?!

Posted on Feb 14, 2008

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Coldcut

Karl Whisenand

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SOURCE: All of a sudden the sound on our LCD tv has gone. We've checked all the cables are in correctly and even though the picture is perfect we have no sound.

Connect the cable directly (bypassing the cablebox)and
set menu to cable channels ,
tune to channel 3 or such and do you have sound now.
if not the amp is out , you might just consider using external speakers as they will sound better anyway.

Posted on Feb 25, 2008

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if not the amp is out , you might just consider using external speakers as they will sound better anyway.
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My samsung TV UN70NU6070FXZC can't turn on, the red light blink 2 times with dark screen and no sound, and this cycle repeated after about 20 seconds again and again. What issue is it and how to do?. My samsung TV UN70NU6070FXZC can't turn on, the red light blink 2 times with dark screen and no sound, and this cycle repeated after about 20 seconds again and again. The Tv reboot again and again. Have to unplug power cord to stop it. Samsung Main board BN94-14106C, Power supply board BN44-01016A 1. Disconnect main board from power supply board: plug power cord, backlight on, output=13v ch1=120v ch2=80v ok. 2. Connect power board to main board disconnecting two connectors to screen, it can be turned on/off normally. No T-con board is found, is it included in the main board or side board? a. TV Standby: red light on, sound off, backlight off. on power board output=12v ch1=ch2=0v, on main board SW=0.1v PW=12vx2, HAVDD=AVDD=VGH=VGHD=0v FB_TRDY_3=0v. b. TV On: red light off, sound on, backlight on, on power board: output=13v ch1=124v ch2=82v, on main board: SW=3.3v PW=13vx2, HAVDD=AVDD=VGH=0v FB_TRDY_3=0v VGHD=0.1v. It seems that video part of the main board is not working? 3. Only connect anyone of the two screen connectors to main board connecting to power board, it can be turned on/off normally. a. TV Standby: red light on, sound off, backlight off, dark screen. on power board output=12v ch1=ch2=0v, on main board SW=0.1v PW=12vx2, HAVDD=AVDD=VGH=VGHD=0v FB_TRDY_3=0v. b. TV On: red light off, sound on, backlight on, dark screen. on power board: output=13v ch1=124v ch2=82v, on main board: SW=3.3v PW=13vx2, HAVDD=AVDD=VGH=0v FB_TRDY_3=0v VGHD=0.1v. It seems that video part of the main board is not working too? Maybe both of left-screen and right-screen be faulty? It seems not to be possible. It is same if only disconnect anyone of the four screen connectorsillustration tv . 4. Connect both of the two screen connectors to main board connecting to power board, it can't be turned on/off normally. Dark screen, red light&sound&backlight blink 2 times for 2 seconds then all off. on power board output=13-12v ch1=115-105-0v ch2=77-70-0vbacklight: lightness-a little lightness-dark, on main board SW=3.3-0.1v PW=13-12vx2, HAVDD=about 6-0v AVDD=about 10v-0v VGH=about 14v-0v VGHD=about 11-0v FB_TRDY_3=3.3v-0v It seems that video part of the main board is working now?. And then after 20 seconds the cycle repeats again and again!! I had to unplug power cord to stop it. I replaced the main board and power board, nothing changed.

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