Still having trouble finding a power supply board for tv emerson lf391em4a or Magnavox 39me313v/f7. Any chance anyone could help me find one?

No LEDs TV would have a reset button, they now have what is called a SMPS for a power supply, the TV you have is known for power board failure, you could replace the power board and chances are it would fix the set, or recycle it and buy a new TV.

Take the back off and see if the main fuse is blown, if it is and chances are it will be, if your comfortable soldering in new components order this kit from Shopjimmy.. http://www.shopjimmy.com/magnavox-a4g25mpw-001-ba4g25f0102-1-power-supply-unit-repair-kit.htm

Are you sure you have everything plugged in correctly?...its also possible you have a bad TCON board

There are!


https://www.google.com/?gws_rd=ssl#q=Emerson+lf391em4a+Magnavox+39me313v/f7+repair

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. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
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.

Emerson BA17F1F0102 Power Supply Repair Kit LC320EM2

www.shopjimmy.com/emerson-a17f1mpw-power-supply-co...

ShopJimmy
$19.94 - ‎In stock
This Emerson BA17F1F0102 Power Supply Repair Kit LC320EM2 ... board. If the TVhas no power it is most likely because of a blown fuse and failure of other preceding components. ... I tested F601, Q600, R602, 608 and 611, and found them to be bad. ...Power Supply / Inverter Board - Joseph A. on March 4th, 2015.

Common TV Repair for Emerson, Sylvania, Philips ...

? 5:35
https://www.youtube.com/watch?v=nQHWrJJg4Mc
Oct 11, 2013 - Uploaded by Tampatec
... LCD TV repairs for Emerson, Sylvania, Philips, Magnavox,blowing fuses "no power" i recommend a TV service LCD repair kit at ... powersupply power-supply "power supply" powerboard "power board" part2 part 2 pt2 ...

What Causes a Blown Fuse in TV Sylvania LCD - YouTube

? 15:31
https://www.youtube.com/watch?v=4P_0aLDZgBY

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://electro-medical.blogspot.com/
https://www.youtube.com/watch?v=mUvclBfaMXg

Fault with the main power supply regulator 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.

Join Date: Nov 2011 I have a Philips 47PFL3603D/F7 with the same problem. It was the IR sensor board causing the problem. You can search online to find the board, which almost everyone will most likely not have in stock, and cant be ordered. The part you need is this: 313926859181 IR Remote Sensor.

Models it will fit are as follows: Substitute Parts 313926859182
Known Models
MAGNAVOX 42MF438B/27
MAGNAVOX 42MF438B/27
MAGNAVOX 42MF438B/F7
MAGNAVOX 52MF438B/27
MAGNAVOX 52MF438B/F7
PHILIPS 32PFL3403D/85
PHILIPS 42PFL3403D/27
PHILIPS 42PFL3403D/F7
PHILIPS 42PFL3603D/27
PHILIPS 42PFL3603D/F7
PHILIPS 47PFL3603D/27
PHILIPS 47PFL3603D/F7
PHILIPS 52PFL3603D/27
PHILIPS 52PFL3603D/F7

If you can find the board, great! A replacement board costs about $12.00. If you can't... we'll there is something you can try ; )

Either way, if you know it's the board, what's the harm in trying?

Remove the back from the TV. You can actually leave it on your stand to do this if you can spin it around to gain access to the back of it. Be sure to unplug everything first!!!

Looking at the back of the tv, the board will be located in the lower left side by the speaker. It will have 2 cables attached to it. Remove them, and take out the screw or two that holds it in place. There will be a plastic tab that keeps it in place also.

Take your fingernail and bend the tab back, and the board should come free. After that you should be holding the board in your hands. The side of the board with the connectors on it is the side you want to manipulate. There will be a tiny surface mounted capacitor beside one of the wire connection sockets. Take a utility knife and scrape it off/ you could use a soldering iron but it should come off very easy with a knife.

Plug it back in, and give it a try! If it works... great! If not, find a replacement board, and try that.

Hope it helps someone!!!!

Check the legends on both boards and make sure they are the same voltage at the same pins, if they are then yes you can use another board, chances are the mounting will be different though