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MY P500550HM8 STARTED TO FLICKER AND I HAD TO UNPLUG IT AND PLUG IT BACK IN TO TURN IT ON AND I WAS TOLD THAT IT HADE A BAD MAIN BOARD, HOW DO I FIND THE RIGHT MAIN BOARD. I FONUND SOME ON EBAY BUT IS

FLICKERING WITH NO PITCHER, CANT TURN OFF BY BUTTON MUST UNPLUG AND PLUG BACK IN

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  • Televison & ... Master
  • 14,553 Answers

Try to Google the model number with "parts" to locate a source other than EBAY-----Keep in mind the ONLY way someone can KNOW it is bad is to actually replace it.

Posted on Dec 04, 2012

  • TROY JOHNSON Dec 05, 2012

    Th tv was checked out by a certified tech and they told me that it was a main board and that they could'nt get it because it was out of stock but I think I found some but for that the main board part# comes up as Qpwb11561-1g-2Can you tell me if there are anyother Main boards in this tv a tech at pauls tv in groton ct said that ther were many.

  • SD Tech
    SD Tech Dec 05, 2012

    Some makers use different ones in sets with same model number so make sure you get the right one, have odered for example LG boards by part number and when arrive are minus plugs or parts original had---Got so bad LG started putting bar code labels on all boards.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

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Tech4lfe
  • 42 Answers

SOURCE: Main Power Board

The power supply board can be changed without any knowledge of repair but there are sometimes adjustments necessary if the picture is not normal. Many times it is fine. There a 4-5 voltage adjustments that would take some knowledge and a meter to accomplish. You need to hope it was diagnosed properly first. If it is completely dead the p.s is a good possibility. If it clicks on then back off almost immediately it is not likely the power supply.

Posted on Jun 23, 2008

  • 280 Answers

SOURCE: vizio tv no sound no pitcher

If the LED is blinking it could be the inverter board. If there is no LED then the power supply may be a fault. some times both boards have faults like bad capacitors

Posted on Jul 10, 2008

circuitworld
  • 335 Answers

SOURCE: LCD tv main/digital board

Send it to us and we will refurbish the board.....

e-mail me....circuitworld@comcast.net


Posted on Feb 11, 2009

  • 718 Answers

SOURCE: I replaced the Power board,but still won't turn on

Polaroid TLA-04011C

You can get a service manual from;
http://www.polaroidsupport.com/polaroid/docs/TLA-04011C_TLXB-4011_TLXB-4241_ServiceManual_20070613.pdf


This will give you diagnostic flowcharts etc. This could be useful in the future.

Posted on May 07, 2009

tvtek
  • 1284 Answers

SOURCE: turn on unit and it does off right away

You will need to replace the ysus board as one of the drivers on there is shorted.

Posted on Nov 11, 2009

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1 Answer

Flickering Sharp Aquos tv


it really depends on were the flicker is, if its the backlight or the screen, flicker can mean them both, t-con board only controls the screen out put on lcds, but on plasmas it works with the back light inverters. if the screen is white and not flickering while looking at the back of the screen on an lcd then it could be the t-con board failing it could also be a bad connection to the board from the wires. the plug were the main board connects to the t-con board if you have the back off and wiggle the cable and see if it stops the flicker.

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Tv stays on for 15-20 minutes and then picture blacks out, Can't turn back on. Unplug and plaug in again but still only last 15 - 20 minutes. new lamp, no difference.


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jun 05, 2017 | Hitachi 62VS69 62" HDTV

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Hi I have a Samsung LN55C650. Yesterday it started to flicker on and off. If you turned off the tv for awhile the flicker would cease for 30 to 50 minutes and would then come back. It is now...


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jul 17, 2017 | Samsung LN55C650 TV

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We have a 57 inch Vizio P50 HD TV for about four years. Just the other day we were watching it and the whole screen started to flicker. At first you could see the channels but now its nothing but grey and...


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Apr 14, 2017 | Televison & Video

1 Answer

SYLVANIA 6632LG its turns on everything works then when i turn it off and turn it back on it shows green light then red light. but if i unplug main board or inverter board and plug in in and turn power tv...


First, it does not make sense if you unplug the main board from the power supply and the TV comes on, please verify which connectors that you unplug. I would unplug the inverter board power connector to see if the 24vdc and 12vdc will work porperly first.
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Aug 28, 2010 | Sylvania 6632LCT 32 in. LCD Television

1 Answer

My lg 50pc3d turns on then off on off on off what is it?


The problem is associated with the power supply or the main board since these two parts are responsible in communicating in order to turn the unit on sequentially.
To find which one is the culprit:
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  2. Remove the back cover.
  3. Disconnect the cable that connects the power supply and the main board.
  4. Plug the unit to the AC outlet.
  5. If the power supply automatically turns on and stays on, you have a bad main board. Replace it.
  6. If the unit does not automatically turn on or turns on but shuts right off, you have a bad power supply.You need to replace it.

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4 Answers

Toshiba 50hp95 will not respond and has flashing red power light. It seems many people have this problem, what's the solution? We have tried all the Toshiba suggestions.


My 50hp95 had the same problem; the red power light is flashing and the tv will not turn on. I unplug the power and plug it back in and the TV clicks, but the power light continues to flash red. My problem was a bad Seine module which you can bypass if you do not need to watch HD off air programming. Since I get my HD from the cable, I can bypass it. All you need to do is remove the back panel from the TV (unplug the TV first) and on the main circuit board unplug the white connector labeled PJ63A. The main circuit board is the one in the center of the TV and the PJ63A connector is the bottom white connector on the left side of the main circuit board (the label is printed in white on the circuit board under the connector). Once I plugged the TV back in it worked immediately.

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Aquos LC37D40U Blinking light and won't turn on


The power light is an error code that tells me exactly what is wrong with the TV. Count how many times the POWER led flashes per second? (Dont worry about the OPC led)

1x per second (constant steady blink) = bad inverters/lamps
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Once the TV turns on, take a look at the screen. Does it flicker then shut off? Or do you hear a buzzing noise from the right edge of the TV? If so, then you have bad inverters or lamps. Once youre done, unplug the tv to get it out of the service menu.

If it is 2x per second or 3x per second, then those boards are just bad and they need to be replaced. There isnt anything you can do right now to fix it.

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You can get info at ctechnicians.com

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