Cannot get any sound on the TVs at all - Sanyo 42 in. LCD TV

Sounds like you might be using a universal remote. Use the remotes the tvs came with. If you are, unplug the tvs for 24hrs.

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May be your top gare baring has gone please check.

I have changed block of tvs victor gx and timing chain also but there some sound come from engine

This can be found found from your TVs remote ,there is switch for sound.if your TVs mute option in ON ,it will not produce sound..you have to make mute off.

Hello
You have reported that there is a sound problem for your TV. I don't know you have tried all the options in the sound menu of your TVs user manual, you haven't stated anyting about it. Anyway I assume that there was sound, and it has gone now only and send this solutiion.
Just connect the audio out socket on the rear of your tv, to any audio devices you have, an amplifier or so, and check whether cound comes from that device or not. If there is no sound from that device, it means that something has gone in trouble with your TVs sound filtering system, which is integrated on the printed circuit board inside and you must have skill and through knowledge about soldering, and to follow the circuit schematic digram.
If there is sound now through that device, means either your TVs speaker has damaged or its Sound Output Ic is damaged. If speaker is damaged, it can be easlyto replaced with an identical one. To make sure about it, you just place your ear very near to the speaker side of your TV, and switch ON it by AC MAINS. You will hear a small "Thumb" sound if your speakers are Ok. If there is no "Thumb" sound you can make sure that the speaker is damaged. If you hear a "Hum" sound, it means that your TVs Sound Output Ic has damaged.
You just check these, and report the result to me through Fixya. Since you have given a small description about your TVs fault; with two or three words, how can I get to the exact point of fault. Give me details as much as you can an you know. Ok.

Hello
There is no sound you means? If so what about the picture? If picture is ok and there is no sound either the speaker of your tv or audio output Ic inside your TVs circuit board is faulty.
To check it, place your ear very close to the speaker side of your tv and turn it on. if a "thumb" sound or a "hum" sound is heard from your TVs speaker, the output Ic is faulty. If there is no sound at all, speaker is faulty. If you have any home theater system; and your TV has audio out RCA sockets at the rear or front side of it, connect it to audio system, and swich on both and find if there is sound output or not. If yes you can assure your TVs sound filtering system is ok, and the fault is somewhere between speaker and audio output Ic. Ok.

I am not expert but I have same problem when down accelerator.
It may occure due to current coil or Uro2 dirty. I clean the uro2 filter by the oil and no busting sound found after that.

the very best and easiest solution is have every input into your tv, and your TVs audio out (RCA/Optical) into your reciever. this is a variable audio (Meaning you can only listen to your reciever with your TVs audio up) or you can turn off the audio completely in your TVs soiund properties.

hope that helped :) -Jordon

HDMI is digital sound. I don't know why it's not passing through. You could run a set of audio cables to the surround sound. The not a noticable difference in my opinion.