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Question DetailsAsked on 1/14/2017

how much does it cost to change 70 inch led panel for sharp LC-70UQ7U

does not turn on, indicator light flashing 3 times pause 1 short , 13 mounts old tv

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1 Answer


Sharp uses flashes of the LED on both the power button and the OPC (Optic Picture Control) LED, so you ned to know the combination of each - number of flashes per second of the power button, and the sequence (the 3 long or short and 1 short you mentioned) to determine what the code means. If you contact the Sharp customer service number in your manual they can help you debug it - the codes are almost always in the back of the manual too - find yours or download from Sharp website.

Repair can be anything from $50-100 (assuming you take it in) or $100-150 ballpark (if they come to diagnose at house or come to take to the shop to work on) if just a loose connection, on up to half the cost of a new TV or more if the screen is shot - though error codes usually mean a circuit board or power supply problem, not screen. Also, a defective or damaged screen usually display something - bars, lines, blurred areas, off-color presentation, etc - totally failing to come on (power light does not come on steady on) would normally indicate a power supply or main circuit board failure or a loose connection, I would say. If power button comes on (or is flashing) but screen stays black,then main circuit board ("mother board") or a video card would be my first guess.

First thing I would try is unplugging and leaving unplugged for 15 minutes or more (to let capacitors discharge) before plugging back in, then if that does not work find the reboot procedure in the manual - how to reboot the TV back to factory settings, and see if that solves it, though of course you wouldlthen have to reprogram any settings that you set into the TV itself (though not cable box settings).

Other possibility - try another input device - DVD player or video game or such - it may be it was set to another type of device for input so it just is not getting a signal it can recognize to display - though I don't think that would generate error code flashing lights, would just display a black screen. Also - try the remote in SETUP mode, to see if the setup menu comes up on the screen, If it comes up OK, then the TV is probably fine, and the problem is it is not recognizing a legitimate input source for it to display - antenna, cable box, game console, computer, DVD player, etc. This is REAL common reason for TV Repair service calls - guests or kids messing with the setup or input settings, or cleaning people disconnecting cables when cleaning.

Answered 3 years ago by LCD

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