20 Most Recent Sharp Aquos LC-30HV4U 30 in. LCD HDTV Questions & Answers

try to check the cables connecting to your tv specially the video cable it may be loosed.

If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size. Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

On the power board look at the electrolytic capacitors . The top of them should be flat. If they are domed on top or have leaked out the bottom then they need to be replaced.

Electrolytic capacitors on the power supply board are bad. The board needs replacing.

Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time.

Hi Gaston. When you press the power button do you see any noticeable response? Was the television behaving weird prior to this? I've seen cases where a bad inverter will create these symptoms. (No power up, maybe a brief flash)

I have not had that exact problem, I'm sure you have tried powering off for more than 10 minutes, for some reason that has alway fixed my issues with the same model you have. Good luck!

A solid green display to LCD TVs is a bad symptom. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Screen-shots to defective LCD are given. You can see and compare to that ot your TVs', and can make sure about the fault to an extent.

replace the supply board
or repair it *** there's problem with supply