Screen blanks after 30 to 60 seconds

Sounds like the back lite module

hi quick test, in a dark room shine a flashlight on the screen, if you a can see an image, bring the menu up if you can see it the led or leds in panel may blown, thanks

shaun

Corrupted firmware. An update is necessary. Contact any service technician. If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Firmware (Software) update procedure of many popular brand TVs and other devices are given in detail.

i have the same problem. i just replace the power board because of the "green blinking" light. now, light stays green, picture comes on for a few seconds, then blank....

did you fix your problem.

it sounds like the inverter was defective, the monitor will be fine for few seconds then go off but power light still stay on with Green. You can contact with manufacturer for repair service if it still under warranty.

helloFive blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

shaun

Off/On The Power switch sudden 4 Straight lines appear on the screen ! what is that & why ?

I have the same problem with my 37" HP which is the same as Sharp Aquos, it's bad backlight inverter boards, the screen comes on for a second then nothing, no menu, no channel change indicator then turn it off and you hear the clicking of the power supply about 10 seconds after.

WELL FIRST U HAVE TO SEE WHETEHR THE SUPPLY FOR VERTICAL SECTION IS OK.IF ITS OK THAN.CHECK FOR SOME DRY SOLDER AT VERTICAL SECTION.OR ANY LEAKAGE CONDENSER ,AT LAST REAPLACE THE IC VERTICAL.IT WILL BE OK'