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Ask Shahid Your Own Question
Shahid
Shahid, Technician
Category: TV
Satisfied Customers: 11272
Experience:  I have been repairing electronic gear since 1993 as a qualified Sony tech
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It has no picture as of today, LC-70c660u and bought it

Customer Question

It has no picture as of today
JA: What's the model number of your TV? How old is it?
Customer: LC-70c660u and bought it about 2 years ago
JA: Does the TV menu work? Do you have the same problem on all sources/inputs?
Customer: nothing will work as it wont come up
JA: How long has this been an issue? What happened right before this popped up?
Customer: this morning my daughter was watching it and it got wavy and then nothing
JA: Anything else you want the TV expert to know before I connect you?
Customer: no mam
Submitted: 8 months ago.
Category: TV
Expert:  Shahid replied 8 months ago.

Hi, my name is ***** ***** I will do my best to help you today. To make sure I don’t miss anything, please give me a minute to review your question.

Customer: replied 8 months ago.
Ok
Customer: replied 8 months ago.
I already talked to Sharp
Expert:  Shahid replied 8 months ago.

OK, does power light on TV turn On solid or blink when switch On the TV?

Customer: replied 8 months ago.
It's on not blinking
Expert:  Shahid replied 8 months ago.

OK, does screen glow/ show backlight inside when switch On the TV?

Customer: replied 8 months ago.
No its pitch black
Expert:  Shahid replied 8 months ago.

- What video devices/ sources (such as cable box DVD player etc) are connected to TV and does the problem occur on all video input sources?
These info will help to troubleshoot the problem.
Thank you.

Customer: replied 8 months ago.
I have a dvd player and a cable box but nothing comes up on the tv as it wont let me see to change the input
Expert:  Shahid replied 8 months ago.

I understand, black screen shows nothing.

Have you tried to unplug TV power cord form wall outlet for 10 minutes to reset, replug back in, switch On the TV.

Does screen glow and show any thing?

Please reply back with the result or we will try next step.

Customer: replied 8 months ago.
I will try that now
Expert:  Shahid replied 8 months ago.

Sure, take your time.

Customer: replied 8 months ago.
It did nothing only the power light is on
Expert:  Shahid replied 8 months ago.

OK, do you have sound from TV internal speakers?

Customer: replied 8 months ago.
No sound but not even sure if its on any channel as I cant see
Expert:  Shahid replied 8 months ago.

OK, lets try next step. Please unplug TV power cord for 5 minutes.

While holding down the “VOL Down” and “INPUT” keys at a time, plug in the AC cord of the TV to turn on the power.

Does screen glow and letter K appears?

Customer: replied 8 months ago.
I have already tried that
Customer: replied 8 months ago.
Not for 5 minutes tho
Expert:  Shahid replied 8 months ago.

OK, try it again and give 5 minutes to leave power cord unplugged.

I'm trying to troubleshoot the issue.

Customer: replied 8 months ago.
Ok indid it has about 3 more minutes
Customer: replied 8 months ago.
I did"
Customer: replied 8 months ago.
No nothing
Customer: replied 8 months ago.
Hello
Expert:  Shahid replied 8 months ago.

Sorry for delayed reply, I was away from computer.

Expert:  Shahid replied 8 months ago.

So screen is still dark, power light is On and solid, correct?

Customer: replied 8 months ago.
Expert:  Shahid replied 8 months ago.

OK, I'm working on it, give me 5 minutes and meanwhile please reconfirm your TV model as there is a Zero missing in model number.

LC-70c660u you posted in opening question whereas it should be LC-70C6600U

Customer: replied 8 months ago.
it's the last one with 2 0's
Expert:  Shahid replied 8 months ago.

Thanks, ***** ***** has builtin self diagnostic feature that can detect various issues related to power or backlight or ICs on main board except the main controller chip and present the error code by flashing the power light in specific sequences/ times.

Now power light stays On but no picture or sound in TV indicates that it is problem with main controlled chip of main board as we have tried all possible ways to get the error code to working the TV but nothing worked so it seems you would need to replace the main board of TV to resolve the problem.

If it was power board issue or t-con board problem then TV power light would have flashing. Please check with following board supplier to get identical replacement main board for this TV if you have plan to do it yourself..

http://www.shopjimmy.com/sharp/lc-70c6600u

If you are not comfortable working on it yourself then you may please use following link to get list of TV repair shops in area which will help to get repair quote...
http://www.tvrepairpros.com/
I'm sorry there is no easy or quick fix for this problem and it is definitely hardware failure that needs defective board replacement to resolve the issue.
I trust my input will help you out to make decision about this TV repair or invest that money on new replacement TV.
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.
Thank you.

Customer: replied 8 months ago.
Ok thanks
Expert:  Shahid replied 8 months ago.

You're welcome, I wish I had an easy or quick fix for this problem. If you have any additional questions, feel free to ask.

Thanks.