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No picture on screen anymore. Not at this time it only

Customer Question
No picture on screen...

No picture on screen anymore

Technician's Assistant: Are there any HDMI cables or A/V jacks (red, yellow, and white cables) plugged into your TV?

Not at this time it only flashes at the bottom (white light flashes)..nothing appears on the screenb

Technician's Assistant: Was there a power outage recently?

No actually its been awhile since i have used it since the picture stopped showing. i am just getting around to looking at it further now

Technician's Assistant: Anything else you want the TV Expert to know before I connect you?

The model is lc-70le732u

Submitted: 7 months ago.Category: TV
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Answered in 2 minutes by:
1/5/2018
TV Technician: Shahid, Technician replied 7 months ago
Shahid
Shahid, Technician
Category: TV
Satisfied Customers: 13,495
Experience: I have been repairing electronic gear since 1993 as a qualified Sony tech
Verified

Hello, I'm Shahid. Sorry to hear that you're having trouble with this and I'll do my best to help but need the following info to troubleshoot the problem.
- How many times the light blinks slow then fast, pauses for 3 seconds and repeat the same blink pattern?

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Customer reply replied 7 months ago
it blinks 2x then 5x
TV Technician: Shahid, Technician replied 7 months ago

OK, any troubleshooting steps or board replacement is done to the TV so far?

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Customer reply replied 7 months ago
I have only research possible issues i have not open up the tv back yet
Customer reply replied 7 months ago
no replacements done on tv
TV Technician: Shahid, Technician replied 7 months ago

OK, 2x and 5x error code indicates Panel 12V failure that means 12V supply from power board is missing OR the t-con board of the TV isn't working anymore and causing this error code.

It needs to verify 12V on t-con board with a multimeter while power On the TV, if volts are available even for a second then replace the t-con board with exactly the same/ identical one to resolve the problem.

I hope this info will help. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page so I can get the credit for my work on the website.
Thank you.

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Customer reply replied 7 months ago
is there a part number for th tcon board or price you can tell me
Customer reply replied 7 months ago
lc-70le732u this is the model of the Sharp tv
Customer reply replied 7 months ago
where on the tv is the t-con board if i wanted to open it up and find the correct one
TV Technician: Shahid, Technician replied 7 months ago

T-con board would be located under metal shield on the bottom center of the rear of the screen.

I hope this info will help

Thanks

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Customer reply replied 7 months ago
can i send you a picture?
TV Technician: Shahid, Technician replied 7 months ago

Sure, click add-file link located nearby where you type the reply to attach the picture file here

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Customer reply replied 7 months ago
i think that is the part that is bad/broken
TV Technician: Shahid, Technician replied 7 months ago

No, that flat cable damage could cause lines or half screen picture etc

Please check 12V on PL connector of t-con board to determine if it is power supply board or t-con board failure

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Customer reply replied 7 months ago
i do not have a tester (power test er)
Customer reply replied 7 months ago
how else can i check the 12V on PL connector of the tcon board/
??
Customer reply replied 7 months ago
once i take off the cover, i do not have power to the tv, the connection is broken unless i put the cover back on
TV Technician: Shahid, Technician replied 7 months ago

I'm afraid, only multimeter/ voltmeter is the tool to check volts

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TV Technician: Shahid, Technician replied 7 months ago

Please make sure the power cord is plugged securely and tight so TV can get power from power outlet

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TV Technician: Shahid, Technician replied 7 months ago

Yes, that is PL connector to check 12V

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Customer reply replied 7 months ago
if i see power to the PL connector but the problem is still there what should i assume or do next?
Customer reply replied 7 months ago
i dont see anything burned out or abnormal on the tcom board
TV Technician: Shahid, Technician replied 7 months ago

It needs to verify 12V on t-con board with a multimeter while power On the TV, if volts are available even for a second then replace the t-con board with exactly the same/ identical one to resolve the problem.

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Customer reply replied 7 months ago
i understand that requirement, if power is seen on12V then replace the t-con, however if no power is seen on 12V then what do i for that condition?
TV Technician: Shahid, Technician replied 7 months ago

Then replace the power supply board to move on

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Customer reply replied 7 months ago
what about that burned out flat cable. should i try and replace that too?
TV Technician: Shahid, Technician replied 7 months ago

Yes, please replace that ribbon cable as well

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TV Technician: Shahid, Technician replied 7 months ago

By the way, that falt cable burn is very uncommon and never seen it before

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