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Replaced Power board, Main Computer Board, IR Board and Function board on Emerson LF501EMF4A_DS1. TV turn on shows splash screen then tv for 1 sec, then the tv powers off to a red standby led.

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PS does not just shut down unless it is defective or there is some short in another location that is telling it to shut down to prevent further damage to components. Which is it? Sure the PS you put in is good? If so, issue is with some other part of the set that you have not already replaced.

Posted on Apr 15, 2017

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Posted on Jan 02, 2017

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Why is my Emerson LED tv turning off?


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.

Jan 10, 2017 | Emerson Televison & Video

1 Answer

My Emerson LE320EM3 tv wont turn on, it has not flashing lights and only makes a high pitched frequency when plugged in.


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. Pull up older posts.
http://electro-medical.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.

Mar 30, 2016 | Emerson 32" Le320em3 720p 60hz Led Lcd...

1 Answer

Why does it turn from blue to black after 10 sec.?


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://electro-medical.blogspot.com/
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.

Dec 15, 2015 | RCA Televison & Video

1 Answer

Why wont my emerson tv turn on?


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.

Nov 30, 2015 | Emerson Lc320em1f TV

1 Answer

HOW TO FIX A EMERSON 50 LCD TV THAT WON'T TURN ON AFTER LIGHTING HIT CLOSE TO HOUSE AND AFTER THAT TV STOPPED WORKING.


Hi Rmeadows,
Lightning can cause extensive damage to TV sets and sometimes leaves them unrepairable. Despite doing so much your set is still not working. I appreciate your DIY approach and if you really want to DIY, the remaining boards are Tcon and inverter. The decision to change a particular should have been with the help of a multimeter. Since you have to do without it, the only option is to replace the remaining boards one by one.
Good Luck.

Aug 19, 2015 | Emerson Televison & Video

1 Answer

Samsung 40" LED TV - UN40D5550RFXZA Plug in, shows startup screen, powers off, then repeats. Power Board or Main Board?


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. Pull up older posts.
http://electro-medical.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.

Jun 07, 2015 | Samsung Televison & Video

2 Answers

My tv [vizio vf550m] won't respond to a remote.


Vizio is famous for having main board issues. If you have replaced the IR board the only two other items it could be is a broken wire from the IR to main or the main board has an issue. Nothing else can stop the remote from working provided the remote is working properly.

Nov 02, 2012 | Vizio VF550M 55 in. LCD HDTV

1 Answer

Screen remains locked on Blue background welcome screen when it finally comes up. Status light remains blinking green. Over the past 7-10 days it took several tries powering on then off before picture...


Tv manual PCB control buttons all work?Like power on/off,volume - + and chanels + - all work than it not the manual PCB board control IR is parts of this board.Not the IR problems,when tv is finally on the remote work fully everything buttons?No,could be remote control have problems.Tv might have DM power supply board problems.

Feb 08, 2011 | Mitsubishi WD-73737 73 in. HD-Ready TV

2 Answers

I have a Emerson 32"


The simples way to go about that is to unplug it, wait 30 seconds and then plug it back.

if it doesn't come on then it has a problem, which may be with the power board or the main board.

I have seen this particular TV with bad main board and bad power board (in fact it has two power boards) and unfortunately I can't suggest which one is more likely to have happened.

Sorry...this one will be calling for a tech to look at it.

Don't kill the messenger :-)

http://www.coppelltvrepair.com

Jan 04, 2011 | Emerson LC320EM9 32 in. LCD HDTV

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