Samsung UN60H6203AF LED TV Screen Won't Turn On

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

Just an fyi for future readers. I never was able to figure out what the problem was. I had the correct voltages but never found out where the problem was for a possible ground issue. I ended up buying another used lower supply and got the tv going again. It has some horizontal line problems that i believe are common with samsung but not too noticeable from more than 10ft away. Thank you to all who have helped!

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

https://www.shopjimmy.com/samsung-bn...re-led-strips/

According to the LED drive Voltage chart, the Voltage is 326V.
So how many pair of wires are connected to the LED connector?

I just reattached the 4 good strips that were working before back to the tv and nothing doing. I was attempting to see if indeed the new led strips were faulty. Not sure if that tells us anything but i know these 4 strips were working prior to all of this.

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

https://www.shopjimmy.com/samsung-bn...re-led-strips/

According to the LED drive Voltage chart, the Voltage is 326V.
So how many pair of wires are connected to the LED connector?

There are 4
2 blue and 2 blk

[budm]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

https://www.shopjimmy.com/samsung-bn...re-led-strips/

According to the LED drive Voltage chart, the Voltage is 326V.
So how many pair of wires are connected to the LED connector?

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

It is always to test the LED as the whole string by putting the tester at the LED connector since failure can be in the path where each LED strip is connected to each other and all the way to the LED connector, I always per form that test before putting the LCD panel back together after installing the new LED strips.

Can i run 27vdc voltage through each string and test (9v batteries in series) or does it need to be the full vdc at the connector?

[budm]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

It is always to test the LED as the whole string by putting the tester at the LED connector since failure can be in the path where each LED strip is connected to each other and all the way to the LED connector, I always per form that test before putting the LCD panel back together after installing the new LED strips.

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

BTW, do you have LED tester for testing the whole LED string?

No tester but I went led by led and tested each one with my multimeter. Also, this is a new string, albeit an ebay purchase from china. They all light up brightly when i provide that path to ground. Also, i performed a continuity test to be sure there wasnt a short to ground issue either on the harness or on the strips. Does that suffice for testing them?

[budm]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

BTW, do you have LED tester for testing the whole LED string?

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I did not have a chance to look at the pinout of MAP3511 compared to pinout of the IC you have on your board yet to verify if we can use the pinout of MAP3511 to troubleshoot your board or not.

No worries. Thank u for helping. I will keep looking to see what i can figure out. Im not giving up on this tv yet.

[budm]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I did not have a chance to look at the pinout of MAP3511 compared to pinout of the IC you have on your board yet to verify if we can use the pinout of MAP3511 to troubleshoot your board or not.

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

Looks like: 407 7014X 2620

I've modified (contrast, exposure, shadow) the original picture to make it a little easier to see.

Here's a previous thread trying to identify a 7014x SOIC-8 LED driver...

https://www.badcaps.net/forum/showthread.php?t=82041

I read thru that post. At first we seemed to have a similar problem, but then his would turn on full bright after disconnecting the main. Mine will not. Any other ideas other that what bud has suggested i try?

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I cannot find anything at all either.

Now that we have the part identified, do you know what voltages i should be reading there to test it?

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

Looks like: 407 7014X 2620

I've modified (contrast, exposure, shadow) the original picture to make it a little easier to see.

Here's a previous thread trying to identify a 7014x SOIC-8 LED driver...

https://www.badcaps.net/forum/showthread.php?t=82041

Perfect! Thank u. That is what i see as well but urs is much clearer. Now, i only get a mathematical equation when i plug that in to the google.

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I cannot find anything at all either.

Confirmed by younger eyes the number is 4077014x2620 (after i explained she was not looking at "plans for a golf course", but electrical traces instead).

[SoftwareHack]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

Looks like: 407 7014X 2620

I've modified (contrast, exposure, shadow) the original picture to make it a little easier to see.

Here's a previous thread trying to identify a 7014x SOIC-8 LED driver...

https://www.badcaps.net/forum/showthread.php?t=82041

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I cannot find anything at all either.

I will get one of my kids to look at it out in the daylight tomorrow to see of they can see it better. Never thought I would have to say that but here i am in life lol.

I really appreciate your help so far. I am so ready to get this tv out of my way and on the wall.

[budm]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

Do those numbers seem right? I cant find anything online with that part number.

I cannot find anything at all either.

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I cannot read the P/N on top of the IC.
Can you clean the top of the IC with Alcohol to see if you can read the prints?

https://www.badcaps.net/forum/attach...9&d=1602949370

Do those numbers seem right? I cant find anything online with that part number.

[Bambam33]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I cannot read the P/N on top of the IC.
Can you clean the top of the IC with Alcohol to see if you can read the prints?

https://www.badcaps.net/forum/attach...9&d=1602949370

Best i can tell it is 4077014k2620. The 0's could be 6 or 8 instead. And my eyes tell me that could be a k or a x, but i think what i have is correct. Consequently, the only magnifying glass i had fell onto the concrete right out of the lens as i was looking at the part.

[budm]

Re: Samsung UN60H6203AF LED TV Screen Won't Turn On

I cannot read the P/N on top of the IC.
Can you clean the top of the IC with Alcohol to see if you can read the prints?

https://www.badcaps.net/forum/attach...9&d=1602949370