Samsung TV UN60J620DAF blinking power light

[JRyan]

Saved this TV from the trash but it will not power on the red power indicator light blinks 6 times with no display. I've attached pics of the power board(1st pic) and mainboard(2nd pic). I don't see any blown caps on pb like I expected so what do y'all think is the issue?

[handsworth]

Re: Samsung TV UN60J620DAF blinking power light

Since the standby light is blinking, that tells me that the power supply has standby voltage. Next thing to do unplug the cable that goes from the main board and the power supply. Power up tv and the backlights should come on. If they do not, then I suspect 1 or more bad leds. If thats the issue, I would replace them all.

[JRyan]

Re: Samsung TV UN60J620DAF blinking power light

So unplug the cable from power supply to main board? So the only thing plugged in is the cable on top right of ps?
I did and plugged power in and no backlight comes on at all. Did i do something incorrectly?

[nomoresonys]

Re: Samsung TV UN60J620DAF blinking power light

Probably bad backlights, they fail quite often in this model.

[nomoresonys]

Re: Samsung TV UN60J620DAF blinking power light

Can check this thread, I posted 3 or 4 links to backlight testing: https://www.badcaps.net/forum/showth...99#post1265199

[handsworth]

Re: Samsung TV UN60J620DAF blinking power light

Probably bad backlights, they fail quite often in this model.

ditto

[Davi.p]

Re: Samsung TV UN60J620DAF blinking power light

post a picture of the table printed near the psb board connector to the main b., then check their voltages

[handsworth]

Re: Samsung TV UN60J620DAF blinking power light

Hey I just got a free UN60FH6200 with the same symptoms as the original poster. Have standby led so naturally I assumed the backlights were bad. Indeed many of the leds were out. So replaced with full set of new led strips and got the same results. Tested the power supply for voltage with the cable disconnected and there was no voltage at the led connection. Finally I saw that these PS go bad often also. So just an FYI on my previous comments

[JRyan]

Re: Samsung TV UN60J620DAF blinking power light

post a picture of the table printed near the psb board connector to the main b., then check their voltages

I think this is what you are asking for.

[EazyBone]

Re: Samsung TV UN60J620DAF blinking power light

Hey I just got a free UN60FH6200 with the same symptoms as the original poster. Have standby led so naturally I assumed the backlights were bad. Indeed many of the leds were out. So replaced with full set of new led strips and got the same results. Tested the power supply for voltage with the cable disconnected and there was no voltage at the led connection. Finally I saw that these PS go bad often also. So just an FYI on my previous comments

I've had a few blown blue capacitors on these PS boards of Samsung. So you know

[Davi.p]

Re: Samsung TV UN60J620DAF blinking power light

check pin 1 & 2

[JRyan]

Re: Samsung TV UN60J620DAF blinking power light

check pin 1 & 2

Ok here is pin 1&2
2.2 v
12.4 v

[Davi.p]

Re: Samsung TV UN60J620DAF blinking power light

disconnect tcon outputs one at a time and see if backlight comes on

[JRyan]

Re: Samsung TV UN60J620DAF blinking power light

There's only 2 and neither being connected alone causes the backlight to come on
:/

[JRyan]

Re: Samsung TV UN60J620DAF blinking power light

So I replaced the led strips and see why its best to replace all, 1 strip had all working. Unfortunately it looks like the people who put it to the road dropped the screen. oh well

My 50" LG tv backlight just went out so that'll be my next project. Is there a way to see if the screen is busted before replacing parts?

[Davi.p]

Re: Samsung TV UN60J620DAF blinking power light

Very easy, watch it very carefully at bright light when OFF.