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Sharp AQUOS LC-70LE650U 70" 1080p LED-LCD TV - 16:9 - HDTV 1080p - 120 Hz LC70LE650U Questions & Answers
Sharp aquos LC70LE650U 5 short flashes 2 long, no display
Try unplugging the unit and hold the volume up and channel down buttons down and plug the unit in. Let go of the buttons and the unit should come on up the service mode. There will be a small k on the screen. With the remote press the channel up button . This should bring up a menu that will show a lamp error line. If the lamp error is = to 5 the unit is in lamp error shut down. Use channel down to highlight that line and the curser right arrow to highlight the lamp error #. Hit the enter button to clear the lamp errors. Now unplug the unit and let it sit for a minute and plug back in. If the unit does not come on by doing this or if it does and you do not find lamp errors the power supply pcb may have been damaged .
Sharp TV LC60LE745U the screen remained black and an arrow on the bottom of the TV stay blinking
These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
I have no sound on my sharp aquos 60" TV.
We have the same TV. In settings for sound you need to select the port directing where you want sound to play. It may be that it is currently setup to play to a sound bar.
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