lc-40LE821E

[t1412]

Hi fella's had this  sharp lc-40le821e come in, looked dead but noticed the white arrow on the front of the tv flashing twice a second, tried holding  input and channel down but not working, do have 5volt 3.3v is bouncing around so thinking mainboard fault, thanks

regards
shaun   

[downunder]

Hi Shaun,

Try holding Vol down and Ch up, then apply power. You may have to try multiple times. These are noted for backlight failure - perhaps it has exceeded 5 times backlight failure at which point the tv locks up.            Bruce