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Sharp LC-70LE733U Reset procedure and voltages measurements.

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Published on Dec 29, 2014

http://www.tvrepairinfo.com/
www.mikestvtips.com/
This reset procedure for this Sharp model LC-70LE733U doesn't always repair the cause of problem, but in this case it was good enough to keep my customer happy., and it saved him a bundle on repair costs. Another example showing the value of Mikes TV Repair Histories. This TV wasn't mentioned in his book, but it mentioned how to do a reset on similar Sharp models, and fortunately this procedure also worked to this model. With the TV unplugged you press the input button and the volume down button on the TV while plugging in the AC cord. Doing this enabled the display to come on, but the TV had to be turned off and on again to bring up the correct user menu. As long as the AC power to the TV isn't interrupted this TV will continue to operate trouble free, but if there is a power failure, or the TV is unplugged this reset procedure will need to be redone.
For those interested in Mike's TV Repair Histories here is a link to his book. http://www.mikestvtips.com/index.php?...

Comments • 81

tubejim101
tubejim1014 years agoHighlighted comment
Are you going to submit that model and your fix find to the book?
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William Rayburn
The procedure you're using is a forced power on procedure and you're missing just a few critical elements to resolve the problem. After you have the "K" on-screen press vol() and ch() together. This brings up a service menu. Then scroll down to "Lamp Errors" and reset. That's why turning it off and then turning it on normally again you're back to the error. After doing that update your firmware. Sharp was way to critical about lamp error detection and under certain circumstances the counter gets added to without detecting an actual error. CCFL lighting, for example, can cause premature error detection. There are some with the 1-2 error that are actually a problem with shorted leds in the lighting array. If forced on does not work I would suspect one or more leds have shorted. To replace them I would strongly advise taking it to a qualified technician.
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Jess Cee
Thanks for the Video. It helped me on model #LC-70LE632U.
harjinder singh
Thank you so much the same thing happened to ours!
PAT O
DUDE!  THANK YOU SOOO MUCH!
pei broker
good technical tips...
Penny Weber
You are the greatest! Thank you for your help!
Troy Hamblet
You were so right! It worked. Now I can tell repairman dont bother.It happened to us at 2 yrs old & I even bought extended warranty.
Kenny Rood
Thank you for taking the time to pin-out all the voltages. This is incredibly helpful. Have a good one.
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Robert Calk Jr.
Thanks Dave.
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