20 Most Recent Sharp LC40E77U LCD TV Questions & Answers

It sounds like something was going bad on the main board and it totally quit now, try replacing that

replace the power supply.

Sharp televisions don't work like you need them to when connecting them to a 5.1 sound system. You can connect them with a fiber optic cable from their digital audio out to the sound system's digital audio in BUT when you turn everything on no sound comes out of the sound system. So you start checking connections and troubleshooting, call Sharp, and maybe even call the sound system manufacturer. You may get a customer service representative knowledgeable enough to explain to you that Sharp televisions were designed without center channel capability. This means that the only use for the digital audio out is to get sound from your sound system when watching tv channels when your Sharp television is connected to your rooftop antenna only or directly to basic digital cable with no cable box or satellite tv receiver. Yes I just stated that you only connect the sound system to the Sharp television when you are watching over the air broadcasts or basic digital cable without a cable box.

People say "but that doesn't make any sense." But it is true. Sometimes you will get lucky and connect a Sharp television to the sound system with the fiber optic cable and get sound out of one of the devices you've connected to the Sharp television with an hdmi cable. You will then be directed by the customer service rep to connect all your devices to the sound system and connect them all to the television as well OR connect all your devices to the sound system with hdmi cables and connect the sound system to the television with one hdmi cable.

maybe its on power supply try to check at power supply section check nearby parts of regulator ic if you can, test those passive and active parts using vom if those parts are ok then the regulator ic is defective

Metric M5 or M6, should be able to get tem at Lowe or HD fo about 35 cents each so you can get difference sizes and length try.

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

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Menu on remote and make sure you have it on wide screen or 16 to 9

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When you say WD box, do you mean a Western Digital Hard Disk Drive? If so, get a Solid State Drive (SSD), and connect it via USB3. The HDD or the USB connection is not fast enough to keep up with the required speed of the video. If you mean something else, please add details.

Check the high voltage circuit on the board that has the 120 volts input. The high voltage should be close to 400 volts - nothing less than 390 volts. The capacitor is failing to hold the voltage and needs to be replaced.

un plug tv and try to force on by pressing vol_ and input button from tv then plug back in see if tv comes on .

Look for it at its bottom side [stand]