Insignia lcd37 09

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

HERE is the servce manual for this TV

SOURCE: Samsung HDMI issue

Have you try to replace your HDMI cable?I recommend you to pick up a good Monster HD700 HDMI cable from a local retail store like best buy or circuit city.In case it isn't the cable problem,you could return it.
However,when you are a using the HDMI cable,it is normally either have both picture and sound or nothing at all.Are you sure you didn't hook up the audio OUTPUT from your TV back to a receiver input?
Or even an optical output from the TV to the receiver?
solutiondoct

SOURCE: Audio Yes, Picture No

From your description, it could be the back light has 'gone'.

Ginko

• 19396 Answers
• Posted on Jul 18, 2009

SOURCE: Insignia NS-32LCD has sound but no picture -

If an LCD TV has sound but no picture do the following:

Use the source button to ensure that source is not set to the wrong input.

Try unplugging power cord for ten minutes, to ensure it is not a setting problem.

Check all the video cables at the back of TV.

Check Light /Color settings.

If problem persist and does not depend on external receiver or settings, then it is likely an internal fault.

If it has sound but no picture then one of the following parts is faulty, and must be tested and replaced:

Theinverter is the high voltage board that provides variable power to thebacklight lamp. This is the most common. When inverter is faulty youcan get no picture, or a very dim picture that can only be seen bypointing a torch light with a 45 degree angle on the LCD surface fromvery near distance.
The inverter must be tested by reading voltages with a multimeter.

The LCD ribbon cable/LCD display and connectors.
Thisis quite uncommon, but happens. If the TV had been hit or moved the LCDcable may have slipped out, or the LCD connector may be damaged.

The LCD controller board.
Thisis the board that controls the video signal, it is difficult to test,as there is need to read determined values on IC pins. To test thisboard you need to purchase a service manual and follow thetroubleshooting diagrams on service manual.

Input/Output Signal boards.
This are the boards where youconnect the video and audio cables, if a signal board is defective,then you may get no picture on particular inputs located on faultyboard.

If under warranty contact the manufacturer ringing the number on the user manual.

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |

SOURCE: after few minutes LCD picture went black but sound works ok

most likely the power inverter, also suspect the p/s. best to have a trained tech check it. Julio at [email protected]