Emerson 50' LF501EM4F

[capwizard]

Emerson 50' LF501EM4F

I look this thread , I fall asleep, i'm too old for this....
https://www.badcaps.net/forum/showth...t=48259&page=5

will check LED, we'll see what happens.

[ReeceyBurger123]

Re: Emerson 50' LF501EM4F

How many Tv's you got lol also keep us updated

[capwizard]

Re: Emerson 50' LF501EM4F

Yes I will. I try to show people fix TV 123 not..........I fall asleep....

and this is my First Priority shelf of TV...Sorry about the mess....I can't even walk in this place.....

[capwizard]

Re: Emerson 50' LF501EM4F

OK, Let's go. First, my guess is the LED screen?... Unfortunately in TV repair business is no guess!

Within 10 seconds ( with my poorman led tester), I knew problem is not the LCD screen....

pic2: 19.6v ..... 19.6v / 0.8v(diode reverse votage) = 24.5( diodes in series) so, I need to reverse the test lids.

pic3: 61.1v /2.65v (this tester with 1 TV LED show 2.65v at pic7) = 23.05 LEDs (in this circuit loop).

pic4: 61.8v /2.65v (this tester with 1 LED show 2.65v) = 23.32 LEDs (in this circuit loop).

pic5: 61.1v /2.65v (this tester on 1 LED show 2.65v) = 23.05 LEDs (in this circuit loop).

The good LED screen has 23+23+23=69 LEDs and 3 loops each 23 LEDs

I need to hunting the other problem!!!

PS: Poorman's LED TV Backlight Tester.
https://www.badcaps.net/forum/showthread.php?t=59136

[capwizard]

Re: Emerson 50' LF501EM4F

Yes Im right, I never open the LED screen, and I do not need to... ... look Over shopJimmy:

http://www.shopjimmy.com/emerson-v50...s-6-strips.htm
Emerson V500HJ1-P01 LED Strips - 6 Strips

PS:The LED screen has 23+23+23=69 LEDs and 3 loops each 23 LEDs, each loop has 2 strips....

[capwizard]

Re: Emerson 50' LF501EM4F

I prepare to troubleshooting.........
Emerson 50' LF501EM4F service manual:


Found bad connection at d1102

Shane711
I was about to give up on this but I think I found the problem. I have this power board and no TV to test it in because someone sent it to me hoping I could fix it. Board number BA3AU0F0102_2. I wasn't sure if the board was bad but I read this whole thread and it didn't help me much on this issue but I finally found D614 to be shorted. I have another board I am going to swap out the diode from but I will need to buy some new ones. I can not tell what this diode is. It is only marked "BR"
I also suspect IC601 which I found to be FA5640 Switching Power Supply Control.


This is famous for 10 Emerson TVs have 10 different problems

[capwizard]

Re: Emerson 50' LF501EM4F

Yes I did............... tv coved with deflection film .

[ReeceyBurger123]

Re: Emerson 50' LF501EM4F

Awesome