Samsung UN55D6050TF Power Light Blinking

[gamethriller]

I have a 55" Samsung with the power light steady blinking. I can here a weird tickin noise on the power supply. I have tested the pins on the power supply and the numbers are bounching up and down. With or without all boards plugged in. I have tried without tcon same results, with out main and tcon, with out backlight, all same results. Even the psu by itself numbers up and down. Here are the pictures....

[tw2005]

Re: Samsung UN55D6050TF Power Light Blinking

Sounds like open cct / failed edge lighting LEDs. I've got a D7000 and basically it's a 4 channel backlight and any led that fails creates an open cct and the TV endlessly cycles on/off relays clicking and brief flash of the screen with the SMART logo.

There's some guys who have done more and posted on other similar models. Some have managed to replace/repair the SMD LEDs, for mine no good, unique and they have them standingon there edge, 2 -3 yr old TV down the tube.

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

There is no brief logo on the screen or any flicker of the back light at all....

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

And why would it continue on and off with nothing plugged into the power supply?

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

Oh and the tickin is very faint. Its not the normal clicking you would hear....

[tw2005]

Re: Samsung UN55D6050TF Power Light Blinking

Is it coming from the PSu the clicking? Does it sound like a relay click?

maybe yours has a single bank of LEDs in series? With mine if the backlight is disconnected it also just clicks.

What pSu part number? looks very similar to mine.

i'm sure you'll get some other opinions shortly. I guess a bad main could do it but I think these have a common issue wit the LEDs burning out or in mine cracked solder.

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

Doesn't sound like relay clicking, I can almost not even hear it. I also read that mainboards commonly go on this set also. And if I have to get my hands dirty ill get into the leds....I have nothing to lose

[tw2005]

Re: Samsung UN55D6050TF Power Light Blinking

My PSU is slightly different, i can't see a relay in your shots. Mine is BN44-00428

Try a search for un55d6000 in this forum, has the same PSU, backlight, tcon and panel

[tw2005]

Re: Samsung UN55D6050TF Power Light Blinking

Oh and the tickin is very faint. Its not the normal clicking you would hear....

fair enough, this guy mmartell has good knowledge with these i feel

https://www.badcaps.net/forum/showth...ight=un55d6000

plenty of hits with un55d6000

[tw2005]

Re: Samsung UN55D6050TF Power Light Blinking

Doesn't sound like relay clicking, I can almost not even hear it. I also read that mainboards commonly go on this set also. And if I have to get my hands dirty ill get into the leds....I have nothing to lose

There's a fair bit to read in that thread i linked , but yes i'm seeing bad main, bad LED strip or possibly both

[mmartell]

Re: Samsung UN55D6050TF Power Light Blinking

If your backlight harness has four wires then the easiest thing to do atm is disconnect the cable from power supply to main and plug it in. If your power supply AND baclights are working they will come on and you can probably say your main needs replacing. Report back.

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

I tried that and no. I thought the main had to talk back to turn the backlight on

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

I gathered that just from reading your 10 page thread.

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

fair enough, this guy mmartell has good knowledge with these i feel

https://www.badcaps.net/forum/showth...ight=un55d6000

plenty of hits with un55d6000

I use my phone while on the site. I can't get the search to work right.... thats why I couldn't search past threads.

[tw2005]

Re: Samsung UN55D6050TF Power Light Blinking

I use my phone while on the site. I can't get the search to work right.... thats why I couldn't search past threads.

No issue really, just lending a hand

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

Thank you. I need all the help I can get. I have like 3 sets open. Working on a 65 the pasg few days wore me out. I had to open a different one to see if I got somewhere with something else.

[mmartell]

Re: Samsung UN55D6050TF Power Light Blinking

I use my phone while on the site. I can't get the search to work right.... thats why I couldn't search past threads.

I have the same problem. When you click Search the box drops down then click Advanced Search from there and a new Search page opens up.

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

If your backlight harness has four wires then the easiest thing to do atm is disconnect the cable from power supply to main and plug it in. If your power supply AND baclights are working they will come on and you can probably say your main needs replacing. Report back.

Im pretty sure I have bad leds. I would try and replace them if I had replacements....

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

This set is flawless too. No marks older people had it and just said one day it quit.

[gamethriller]

Re: Samsung UN55D6050TF Power Light Blinking

How many strips are in here and how did you check them without breaking the screen?