How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Aric Your Own Question

Aric
Aric, Technician
Category: TV
Satisfied Customers: 33436
Experience:  10+ yrs. experience installing and repairing TVs and A/V systems. Owner of A/V installation and repair business.
24739752
Type Your TV Question Here...
Aric is online now
A new question is answered every 9 seconds

Sharp AQUOS LC-52D64U LCD TV has no picture and the power and

Customer Question

Sharp AQUOS LC-52D64U LCD TV has no picture and the power and OPC lights are flashing
Submitted: 2 years ago.
Category: TV
Expert:  Aric replied 2 years ago.

How long have you had the set for, and when did the problem occur?

Was it after a storm or power outage?

Does the standby/timer light blink continuously, or in a pattern (such as 5 blinks, pause, 5 blinks, pause, etc.)?

 

Customer: replied 2 years ago.
I have had the set for maybe 3 years. The problem happened this past Thursday nothing unusual, just the picture went out, so I checked all the connections. I thought my wife hit a wrong button on the remote. The OPC light blinks twice to the power light blinking. I have seen a few different possible soultions on the Internet but I prefer to not easter egg and replace every board or lights.
Expert:  Aric replied 2 years ago.

So the OPC light blinks two times to power light blinking once- correct? They both repeat this cycle over and over again right?

 

Additionally, is the double click correlating to the blinking lights, or is it on it's own random sequence?

Customer: replied 2 years ago.

Correct on the blinking and yes they repeat unless I hit the power button

 

The double click occurs before the blinking......once the blinking starts the clicking stops.

 

Sounds like it is trying to turn on then goes to the blinking failure state.

 

When the front lights begin blinking the red light on the main board goes out. The red light blinks during the double clicking as well.

Expert:  Aric replied 2 years ago.

Thanks for the reply. This problem is either that the mainboard or the low voltage rail from the power supply that feeds it has shorted and failed. The clicking is the power on relay disengaging/engaging over and over again due to the short. The issue is isolated to either the power supply filter capacitors having failed (most common failure on these sets), or the mainboard failing. Voltages must be measured at the power supply output both under load and no load to determine which board has the failure. Unfortunately there is no reset you can perform to fix this problem and the set will require service. Average cost for this type of repair is $200 to repair the supply, or $325 to replace the mainboard (parts and labor). You can use the link below to locate a tech in your area:

http://www.tvrepairpros.com/

If this answers your question, please click "Accept", as it is the only way we experts get paid for our knowledge on the site. Tips and Bonuses and welcomed and appreciated!

 

Customer: replied 2 years ago.

If I measure the output voltages on the power supply under load and no-load, what should I get for values?

Expert:  Aric replied 2 years ago.

The first thing you'd want to check is the caps on the power board for bulges or leaking. Any of these needs to be replaced. Voltage to the Mainboard should be 3.3 volts DC.

 

Use a DMM set to DC volts, find a common ground on the power supply and probe all of the Outputs for voltage (correct voltages will be stamped on the power supply at the outputs). Do this with NOTHING connected to the Power supply but AC power. If a voltage is missing/ fluctuating, then the power board needs to be replaced.

If the power supply outputs its rated voltages, then connect the other boards one at a time until one causes it to shut down. This board would have the short causing the supply to SOS, and would need to be replaced.

A good source to locate replacement boards is http://www.shopjimmy.com/ and http://www.discountmerchant.com/

 

If this answers your question, please click "Accept", as it is the only way we Experts get paid for our knowledge on the site. Tips and Bonuses are welcome and appreciated!!

Aric, Technician
Category: TV
Satisfied Customers: 33436
Experience: 10+ yrs. experience installing and repairing TVs and A/V systems. Owner of A/V installation and repair business.
Aric and 2 other TV Specialists are ready to help you
Customer: replied 2 years ago.
Eureka!!! I changed the main board and it is working
Expert:  Aric replied 2 years ago.
Excellent! I'm very glad to hear it worked! Thank you for using JA!

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache. VM United States
< Last | Next >
  • I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache. VM United States
  • I love this site! $9 instead of a repairman or new/used frig can't be beaten. This older woman will worry less now that she knows about this site. Bless you all. Windy USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • TV Tech1

    Technician

    Satisfied Customers:

    4800
    30 Years experience. Authorized Warranty servicer.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TV/TVTech1/2013-3-25_625_TECH1Nobanner.64x64.jpg TV Tech1's Avatar

    TV Tech1

    Technician

    Satisfied Customers:

    4800
    30 Years experience. Authorized Warranty servicer.
  • http://ww2.justanswer.com/uploads/OR/OriginalSeadog/2011-7-22_191917_ProfilePicture.64x64.jpg Rod's Avatar

    Rod

    TV & Communications Sys Repair

    Satisfied Customers:

    2354
    FCC Commercial License, Previous owner of Electronics Repair shop, 40+ years in electronic systems.
  • http://ww2.justanswer.com/uploads/benimur/2009-03-29_003401_id_2.jpg Louie's Avatar

    Louie

    Technician

    Satisfied Customers:

    2208
    25+ yrs. experience in the field and 3+ yrs. online, down to component level.
  • http://ww2.justanswer.com/uploads/P0/p0llinate/2011-4-27_174649_tucker.64x64.JPG Nathan's Avatar

    Nathan

    Installer

    Satisfied Customers:

    1683
    Custom home theater installer, authorized dealer top brands.
  • http://ww2.justanswer.com/uploads/ST/steven.benoit/2011-4-1_194735_untitled1.64x64.jpg Steven's Avatar

    Steven

    Technician

    Satisfied Customers:

    1366
    Ma. Master Technician Lic. Authorized Warranty Support.
  • http://ww2.justanswer.com/uploads/IT/ITPeter/2011-5-3_23187_Pete.64x64.JPG Pete's Avatar

    Pete

    Electronic Engineer

    Satisfied Customers:

    1260
    12+ years experience installing and repairing electronics.
  • http://ww2.justanswer.com/uploads/3G/3guk/2011-1-15_132320_D1SC01363.64x64.jpg James's Avatar

    James

    Technician

    Satisfied Customers:

    1154
    AV Service Engineer (4 Years)