Samsung/UN65H6300AF LOGO APPEARS AND SHUTS OFF

[Super360]

Hi as you can see from title, I have a samsung tv here that will show the smart tv logo and then no picture after that even hitting input or menu on remote and shows nothing but the backlight still appears to be on. The tv will turn itself off after a minute or so automatically. I'm somewhat confused if this is either a eeprom problem or a bad led strip problem. The power supply makes a pretty noticeable humming sound when it's turned on leading me to believe one of the leds are shorted but idk honestly. Any of you guys have any help for me? I have a good multi meter and can take pictures of whatever you need. I've also replaced entire led strips in tvs before so I kinda know the symptoms of a bad led tv but this one is throwing me off a bit. Thanks.

[Bholu]

My friend, there is a 8 pin eprome ic attached to this board.rilace it with the new one same nomber remember you do not need to program new ic place the ic as it is. Thx

[Super360]

My friend, there is a 8 pin eprome ic attached to this board.rilace it with the new one same nomber remember you do not need to program new ic place the ic as it is. Thx

Would this listing be what I would need to buy then?
thanks.

[Davi.p]

Post the BN44- code of PS board, so i can search good pictures, or report the list of the PSB->MB connector signals..

My 2 bets are for Bad leds or bad BGA solder on MB..

[Diah]

you have multi issue to narrow the issue
1- disconnect the socket between mainboards and powerboards, plug in wall and see if the BL come one and remain... if not... you have many burned area at the powerboards... take it out from the TV and inspect resolder all parts again at any heated burned area at the hot area and cold area... be careful it will still charged at hot area

[Super360]

Post the BN44- code of PS board, so i can search good pictures, or report the list of the PSB->MB connector signals..

My 2 bets are for Bad leds or bad BGA solder on MB..

The small chip is a closeup of the eeprom on the motherboard that bholu pointed to may be the issue.

[Super360]

you have multi issue to narrow the issue
1- disconnect the socket between mainboards and powerboards, plug in wall and see if the BL come one and remain... if not... you have many burned area at the powerboards... take it out from the TV and inspect resolder all parts again at any heated burned area at the hot area and cold area... be careful it will still charged at hot area

Disconnected mainboard and left just the led backlight plugged in and the leds light up and remain lit with no mainboard attached.

[Diah]

Disconnected mainboard and left just the led backlight plugged in and the leds light up and remain lit with no mainboard attached.

use freezer spray on the SPI winbond and the NAND to see if it boot complete.

[EazyBone]

use freezer spray on the SPI winbond and the NAND to see if it boot complete.

How often does this work for you? In general.. I have yet to have an instance where this works yet I see the suggestion slot from old posts and different people

[Diah]

How often does this work for you? In general.. I have yet to have an instance where this works yet I see the suggestion slot from old posts and different people

his issue boot loop, the stage at loop he had just the logo.. this part at SPI, the rest at NAND. if NAND didn't response the SPI will repeat the start script.. freezing both first then each alone later... or you are waiting from me to write replace mainboards !!!

[yokoono]

For me, nand memory cooling only worked on Samsung and only on the D series.

[Diah]

For me, nand memory cooling only worked on Samsung and only on the D series.

you are right... but my suggestion never being attempt to repair... its just for diagnose the issue.

[lotas]

The problem here is in the firmware, if you have a programmer, you can reprogram the spi flash (sometimes it helps), if it doesn’t help, then you need to reprogram the eMMC.

[EazyBone]

his issue boot loop, the stage at loop he had just the logo.. this part at SPI, the rest at NAND. if NAND didn't response the SPI will repeat the start script.. freezing both first then each alone later... or you are waiting from me to write replace mainboards !!!

I'm asking how often freezing works lol that's all I want to know.

[Diah]

I'm asking how often freezing works lol that's all I want to know.

freezing any solid sectors around -40° will hell them.. some forever and some just temporary to let you able to dump the content 100%

[Super360]

his issue boot loop, the stage at loop he had just the logo.. this part at SPI, the rest at NAND. if NAND didn't response the SPI will repeat the start script.. freezing both first then each alone later... or you are waiting from me to write replace mainboards !!!

Froze the shit outta those both chips to no avail. Used almost a whole can freezing the whole board and nothing changed. Tv turns on displays the smart tv samsung logo and screen looks like it is on but no picture comes out and no visual. It then shuts off automatically after a minute.

[Davi.p]

Does the spy led make a blinking code? Most suspected are all BGA solder on the MB. If it blinks 2 then it is screen.. wait also 2 minutes to get blinking code..
if tcon is separated yo can make screen self test..

[Diah]

Froze the shit outta those both chips to no avail. Used almost a whole can freezing the whole board and nothing changed. Tv turns on displays the smart tv samsung logo and screen looks like it is on but no picture comes out and no visual. It then shuts off automatically after a minute.

it sound firmware or dead eMMC , try download from Samsung usb firmware and try it

[lotas]

Froze the shit outta those both chips to no avail. Used almost a whole can freezing the whole board and nothing changed. .

You were hoping for a miracle; freezing cannot restore the data in the chips; only a programmer will help.

[Davi.p]

Ah, yes, also the the firmware in the emmc is suspected as common with stuck logo.. forgot this..