Sharp LC-70LE650U 2 slow/5 fast blinks

[Aggie2012]

Howdy, I'm new to TV and tech repair but I'm pretty handy, I've been following a couple other related threads to try and solve a similar issue with a Sharp LC-70LE650U I found in the trash. It is giving me the 2/5 blinking error code. I followed the steps on the Tech TipsPDF that RJ posted on page 1 of this thread:
https://www.badcaps.net/forum/showth...0LE732U&page=4

I took off both ribbon cables from the TCon got the backlights to light up didn't see any physical damage to the panel. Reattached one ribbon (right side) and got half the screen to turn on, no cracks or damage visible meanwhile the blinking error code is NO longer happening. The tech tip sheet says if no physical damage is visible then there is a legitimate panel failure. I'm not sure what that means but I disconnected the right side and connected the left side and backlights don't come on at all and the blinking error code is back. Checked voltage from PD 1 at the main board to PL on the TCon board while both ribbon were disconnected and I got 12vdc at PL1&2 but 0 at 3&4. Checked voltage while left ribbon was connected (and error code blinking) and got 0vdc on PL3&4 and .03 on 1&2. Voltage check with right ribbon connected and left disconnected (no error code) and got 12vdc at PL1&2 and 0vdc at 3&4. And again with both disconnected (this time no error code) I get 12 at 1&2 and 0 at 3&4.

So I guess my question is, is this a TCon issue or a panel issue? Or do I need to check something else? Any help y'all can offer would be great. Thanks,

JW
Texas
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[budwich]

Re: Sharp LC-70LE650U 2 slow/5 fast blinks

it is likely that you have a "panel failure" with one or more of the side tabs that are bonded to the panel. The voltages you measure only tell part of the story, the resulting picture / display on the screen during your "testing" tells more. Anyways, there are plenty of threads on this type of issue where people are able to "save" the set by removing the tabs. Search and read as the "save" is a "one way operation" of removing the bad tabs on the side in question. After the operation is done, the set will be basically as "good and new".

[Andrew F. Ali]

Re: Sharp LC-70LE650U 2 slow/5 fast blinks

On the side that shows the error there are side TABS that when removed can save the set but as budwich says this is a 'oneway' repair, they cannot be re-attached. This method has worked and has saved many sets from the junkpile.

[Aggie2012]

Re: Sharp LC-70LE650U 2 slow/5 fast blinks

Thanks guys! I'll see what happens.