Question about Philips Magnavox 27MS343S 27" TV

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First check to see if sound has been turned off go to audio in menu if off which to on if this does not work then chk your speaker ,if speaker is good then you might have a bad audio output chip.

Posted on Dec 23, 2007

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When you first turn ythe set on, it does not have any sound. If you turn it side ways or put your hand on the set it works, but as soon as you remove your hand it quits. Sometimes banging on it, makes...

hopefully there is some bad contacts between the sound IC and the print board. you may check and do some soldering on it.
90% of the Zenith i work on has the same problems and solution. be sure to do a complete check on loose connections in the set once you open the system.

Aug 26, 2010 | Zenith C27A24T 27" TV

1 Answer

31gt660 TV will not turn on. Makes high pitched sound.

This set has a shorted horizontal output transistor and possibly a bad high voltage transformer. If you repair the set, also solder the horizontal drive for the transistor listed above. Try for parts. the h-ouput transistor is p/n: 223942 and the transformer is 223952 .Thanks and good luck.

Nov 07, 2009 | GE 31GT660 TV

1 Answer

Hissing sound from a Panasonic old TV...Sound and picture are OK. The hissing sound even continues when the MUTE on the Box is ON. The hissing only stops when the MUTE on the TV is ON. I am using the...

If you disconnect or power off the converter box does the hiss go away?
If you connect a VCR or DVD player does it still have the hiss? We
need to isolate what source is causing the hiss if it is from the set or
if it is from the converter box.
When you turn the volume control down on the set, does the hiss
reduce in level? If mute stops it, it should reduce in level as you
turn the volume down. Then turn up the sound level control on
the converter box whether its a manual control or by remote. If you
can get a combination that minimizes the hiss and gets higher sound
level from the programming that may cure it.
I am not familiar with the converter box you are using. Are you using
Audio/Video cables from it to the set or is it coming out with coaxial cable
and used on a channel? If you are using a very old set with a tuner input
perhaps the fine tuning is out of adjustment.

Feb 21, 2009 | Panasonic CT-20D11 20" TV

2 Answers

No picture no sound

Last night i set childlock in my nikai ( NTV34010) tv set and tuned off by remote control.Then after some time later i tried to turn on tv but there is no sound and no picture.
will u please help me to solve it out.

Dec 02, 2007 | Panasonic CT-36D32 36" TV

1 Answer


I don't know your set in particular:

Genericaly, there are some models of sets that have a pre-set level for the sound. Check in to the menus of the set if there is a setting for the audio level at turn on.

Some manufactures designed their sets so that the sound is at about 30% up when the set is first turned on. This is annoying. They did that because they had people turn on the set and call their tech support that their set had no sound. It turned out that the volume setting was at "0"!

Jerry G.

Nov 21, 2007 | Philips 28PW6506 28" TV

1 Answer

Hissing Sound

A hissing sound that comes from the back of the set (not from the speaker) usually indicates a high voltage leak, most likely around the "suction cup" at the top of the picture tube or around the flyback transformer. Remove the back of the set and turn it on, and when you hear the hissing sound, shut off all the lights in the room and you should be able to see a purple-ish or white-ish glow from the spot that is hissing. Shut the set off, discharge the high voltage and clean and seal the problem area. Of course this should be done by someone experienced with stopping high voltage leaks.

Jun 22, 2007 | Durabrand DU1901 TV

2 Answers

TV makes a repeated cricket sound and won't turn on.

It means that the TV set has a short in it somewhere. The sound you hear is the power supply trying to start up and shutting down. Most likely the Horizontal output transistor shorted because of a bd high voltge flyback transformer went bad. Common problem for these types of sets. Good Luck

Mar 25, 2007 | Memorex MT2271 27" TV

1 Answer

TV wont turn on?

this product has a bunch of exotic semiconductors that only a tech could replace in my parleyance its called NECO

Dec 08, 2006 | RCA 27R410T 27" TV

1 Answer

High pitch crackle buzing sound when set turned on

Did you find a solution because I have the same problem on my JVC?

Nov 14, 2006 | JVC AV-27530 27" TV

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