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Sharp LC-70LE755U will not turn on, we bought a new power supply board. and will not turn on.???

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6ya6ya
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Hi there,
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Posted on Jan 02, 2017

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SOURCE: Where do I buy Sharp

Good Day, coopsl;ine;
Try calling (630)-226-2699; SHARP, or go to NATIONAL PARTS CENTER: parts@sharpsec.com. Good luck, big IRISH.

Posted on Sep 09, 2008

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SOURCE: power supply bad on Sharp Aquos LC - bad board - schematic to ID?

Buy the green light going on means Standby is ok. Next, would be to locate the plug coming from the main board to the power supply and find the post that says PO which means power on. With your meter on that post, press the power button as see if the reading goes High, if it does then the main board is able to turn on the power supply. Next, find the plug on the power supply that goes to the inverter( the long board on the side) remove it and see if you have 24 volts coming out of the power supply when you press the power. If you do, then the inverter board is bad, if you don't have 24 v, then the power supply is bad. There are NO diagrams available for these set other than a flow chart if you can find one. A regular svc tech does'nt need a manual for these anyway.

Let me know how you do Kathy ?

Posted on May 17, 2009

  • 308 Answers

SOURCE: If my Sharp Aquos 37in LC-40C37U tv needs to be

Blinking light is an error code. Count the blinks before they repeat. Check your manual in the troubleshooting section. If you can't find it, contact a Sharp service center or try and get a service manual. Reset info is also in the user manual but you can't do it if your set doesn't power up. Are you sure about the power board?

Posted on Apr 30, 2010

Testimonial: "Thank you. I will get another board."

bshldn
  • 736 Answers

SOURCE: Ok.... I got a new power supply board and the tv

The pattern of the blinking is a code. If the power light is blinking by itself once per second or thereabouts it could be loose connection to Inverters, reload firmware, Inverter Unit or LCD Panel.

Posted on May 06, 2010

Testimonial: "Thank you. I will let you know how it all works out."

vinceisaac
  • 2432 Answers

SOURCE: Sharp Aquos LC-C3237U no picture backlight OK green light on

check if their is a signal on voltages around 3.3v at the inverter board if none their is a problem in the board which is in the processor.

Posted on Aug 31, 2012

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1 Answer

What does a Sharp aquos error code 25 represent. Two long, then five short flashes. LC-70LE755U


If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. Error code details to many popular devices are given in detail.

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Sharp Aquos LCD TV Error Codes power flashes twice and opc flashes 5 times - What does this mean?


Sure - but you need to find out what the new error codes stand for and be guided accordingly. You might want to check on the Sharp web site.
Your t con board might also have gone south.

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1 Answer

Sharp LC-50LE442U does not turn on. RED standby LED is lit, when I try to turn it on, the LED turns green but screen stays black. LED then stays green, won't go back to red when turning off.


You cannot tell if capacitors are bad just by looking at them. they need to have a meter called an ESR meter to test them, I can tell you with almost certainty that it is a capacitor in the power supply that has failed. The whole board is Sharp 9JY0950CTN02000 Power Supply Board (09-50CTN020-00) LC-50LE440U LC-50LE442U

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1 Answer

Tv flickers is there a board I can change to solve problem


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

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1 Answer

How do I replace a broken circuit board on a Sharp LC-60E78UN TV?


You can either remove the power supply and check and replace caps and most likely the transformer (pop sound). Or a replacement can be found on eBay, amazon, etc... One model TV can have numerous diff power supply models from revisions and improvements. If you replace the board make sure you look match serial numbers on board to the new board. The back of the TV will come off very easy. Lay TV face down on a flat surface(making sure nothing is touching the LCD) remove screws. (Make sure cable coax slides free, some have a retainer but to remove) once the back is off the layout should be so simple, you should have no problem identifying parts.

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1 Answer

Sharp LC-52le835u Flashing lights problem


the problem is shorted backlight not the smps and main board if the backlight is shorted the unit will auto on n off thats hapen in your tv try to hang-up the wire connected to backlight it will power on

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1 Answer

My LC-37d43U won't turn on, no lights, no nothing...?


Open fuse on power supply board, or the power supply is dead, or there is no voltage coming out of the receptical out of the wall, You can hget a new power supply at b www.partstore.com take care.

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1 Answer

My Sharp Aquos TV will not turn on...just a green ligth flashing...something to do with power...how can i fix it?


The most common issue on these is the power supply boards. Bad capacitors on these boards are the issue and there are repair kits available if yur qualified for the repair other wise you can get new boards and swap them out. This is the most common issue in the business right now. Sharp sets are a little different in ther design on the power supplies but parts can be had and repairs can be made. You will need to balance the price for the repair vs a new set. Just Google TV power supply repair kits for Sharp Aquos and you will find repair kits and information on the power supplies.
If this was helpful a vote on the thumbs up would be greatly appreciated for the free advice.

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1 Answer

TV Sharp Aquos LC-32D44E/S doesn't come on Status light turns green for 10 seconds then turns red but no picture or sound.


Good day to you and welcome to fixya..

That problem is usually have 2 causes..Its either power supply board or main board..

Please take this steps on how to determine the problem:
1. Open the back cover.
2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
4. If the power supply output is normal..The problem could be on the main board...
5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..

You have a better chances if you have failing capacitors on the power supply board..

Please watch this videos about capacitors..








Hope this solution will be helpful..

Thanks for using fixya...

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1 Answer

Sharp TV powers off after 15-30 seconds


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