SHARP AQUOS TV 'LC-60LE650U' flashes 3 slow, 1 fast. No back light or sound. Here's the fix.

Hi all, I'm sharing my knowledge with you all today.
A customer brought me his SHARP AQUOS TV "LC-60LE650U"
this fix might work for other similar model sets.
It was not turning on at all, just flashing a code of
3 slow and 1 fast flash. After checking and looking on the net, I couldn't find a schematic. But did see quite a few people with the same issue, but no fix. the code seemed to relate to a com error between the TCON board and the CPU. But that wasn't the case here. so I'm sharing my findings with everyone.
Forgive me for flip flopping around trying to explain things on the fly. But i think everyone will still like the info.
Comments welcome. Be safe.
Oh, BTW the regulator is a KIA378R12PI ( 12V Regulator with turn on control )

[shawnstiefel]

I wish I had seen this about a week ago. I just got tired of messing with my Sharp and it had the same fault and symptoms. I had replaced the backlights because I had the one long one short fault code to begin with and it worked for a bit then went into the fault mode like yours. I also had a quarter of the screen stop displaying right before it happened. I couldn't find no info and got tired of troubleshooting it and ended up just breaking it down and giving up. Thank you for the info though because now i can locate where i put my power supply board and repair it and maybe sell it to recoup some of my loss. I know they want an arm and a leg for the boards in these tv. Good find bro!!

[frankc.]

Mr. Ray speaks the truth. Seems to be a common problem on this model power supply board.
Same fix for a a 70" LC-70LE847U Sharp Aquos. In my case, the power LED was 2 slow and 5 fast which indicates display (panel) fault.
Normally fatal but having nothing to lose I checked the regulator anyway. 8.4 volts on pin 2. I want to say I got the replacement KA378R12
off eBay but not sure, anyway they were 2 for around 10 bucks shipped. It's a readily-available part; look it up on Google.
Make sure to remove the old thermal paste on the heat sink and apply new. Don't overdo it, a light even coat on the back of the part is fine.

The TV's been running sweet as a first kiss for a year or so now. (I got it free off off the local Craigslist) 10 bucks well-spent!

[jordankashuba]

Great job Ray. I would wager that this video has temporarily postponed a few 1000 TVs' trip to the dump

[cesarromero]

Excellent I have a similar tv with the same symptoms and started to doubt in my theory and internet start to convinced me that was TCon board, but thank your video now I know i'm not crazy

[aeronautic]

Great Vid Jay. I’ll pass this on to my Sharp tech.

[ICEMan]

Nice component level troubleshooting. Thanks for sharing.

[wpadkitv]

Thanks you my TV works again, tkank you very much

[Seba_World]

I will send you one litre of vodka if its Voltage Regulator on my TV mobo, almost same model, exactly same led flashing sequence. Just got a TV for free. Taking in my hand screwdriver to check tommorow. BR from Poland.

[daveratowski]

nice job. I have a similar problem, hope im as luck as you thanks

[adriansilva]

Tanks for the video. I hace a 60 inch tv with the same problem. I Will chec tath regulator .

[heinrickguarte]

Mine is aqous LC-50LE570X it has red standby and blue (switch on) but still no display no backlight no sound I tried to check the output voltage on standby it starts on 9v slowly going zero...do u have some advice for my tv?

[Measuray]

Hi Ray, where did you find the a KIA378R12PI ( 12V Regulator with turn on control ) I have ordered two sets of regulators these are not the turn on control regulator? Can you please provide the manufacturer where you purchased your regulators? Thanks a million!

[SpartanHeaven]

Hi very informative great video have the same problem have to source a regulator thank you.

[mmkb]

Hallo there I hope u still here I also have a sharp but mine is the model LC-60LE635E
It looks really similar to the model you have, the power supply board is the same and I have the same issue, no sound and no backlight. On my tv it blinks two times maybe I'm Lucky as well and have the same problem. I'll check the the four pins and give you feedback. Thank you for the video!

[nellypagan]

It would be nice that you show how to change the regulator, for next time. Thankyou.

[ShaighJosephson]

I have the same model... I've been having power freezes (power light on, black screen, no response to remote) for years...backlight has never functioned...but no flashing or error code... I have to unplug it, wait 10-15 minutes, then plug it back in... Assuming that It needs that time to disapate the charge... Do you think it's the same regulator causing it??? Thanks for posting this... :)

[reidrichards]

Hi Ray,
thanks for your video. I have the same Sharp model... it's been an excellent TV, until recently. I was wondering if you or your readers have any experience with this model, regarding local digital channel reception (re: antenna)...
We don't have cable (for channels), but currently are using internet sucessfully for internet channels like YouTube.... we cannot any longer receive any local digital channels
My Sharp will no longer receive any local Digital channels (have done several resets, as per set-up, which has always worked in the past. I'm getting an error message "remove scrambled channels", which we never had this message in past years.... is there a digital tuner chip in the TV that might be defective?, or is this scrambling new? Thanks
The antennae, cable & transformer have all been changed,

[MystiqEevee]

I have a similar issue with a lc55ub30u i just picked up off Facebook for free ordered all new boards for cheap off ebay I'm praying to jesus that after i replace all the boards it fixes it it's not hard to replace the leds i just don't want to have to resort to that and i truly don't think they're dead as I'm not positive but i think when i was tinkering with it they came on briefly at one point then shut off so I'm pretty sure it's power related

[jellythestore]

Hi I have Sharp Aquos LC70LE650U, I already change the power board what you did but still same flashing I get. Do you have any idea what else the problem is?

[kennethgrimes]

Hey what’s up man how you doing I had the same problem I got the same TV the only difference is I get sound but it’s a flashing light no picture I want to thank you have a blessed day