Tv got picture but no sound tried all connections all ok

SOURCE: LG LCD/DVD TV no sound on TV - DVD works fine with sound!!!!

HERE is the servce manual for this TV

SOURCE: samsung lcd tv no picture just sound

While this is not a permanent solution, we've fond it helps... We have a Samsung LCD that does not turn on when there is too much humidity in the room. This only happens in the summer when it gets really humid. We moved our dehumidifier next to it, let it run for around 15 minutes and the TV turned on again, no problem. Lately, it's been raining alot so it's very humid. We've gotten into the habit of leaving our dehumidifier on through the night on low and we've had not issues turning on the tv since then. This is a hastle but it's either that or buying a new tv.

SOURCE: sony bravia kdl-52w3000, turn tv on, no picture or

Most likely this is caused by a defective main board. Changing the main board will fix the issue about 95% of the time.

To be absolutely sure, the voltages need to be checked on the power supply. If they are not the values listed in the service manual, then you should replace the power supply instead (accounts for the other 5% of the time).

SOURCE: flat tv, sound but no picture. have tried

I had one that had a black screen and fixed the problem by repairing the inverter. When I opened the unit I looked at the capacitors on the inverter board and found them swollen. I looked at the bottom of the board and found that the fuse had opened up. The caps were a cheap quality low temp variety 150uF at 25V I replaced them with 330uF 25 volt 105C caps. I then replaced the 2.5A surface mount fuse with an axial 2.5A pico fuse and the TV worked beautifully.

SOURCE: dynex 32" tv picture goes black

If there is still about ? 24. Volts coming from the Power Board when it goes dark, it will be the Inverter board that needs replacing. If not, it is the Power Board that needs replacing. The Voltages should be written next to the sockets & plugs on the Power Board.