Samsung/UN65H6300AF LOGO APPEARS AND SHUTS OFF

[Diah]

In fact there's no way!! Samsung update via net / usb needs entering sub menu..

we are here in this forum related to our way to solve problem.. we didn't copy result from other forum or users... we know its hard but we will not say impossible... the impossible when firmware vanished from eMMC... there will be other miracle it t bring it back... try and try later if this or any other method suggested over this forum will be answer over all YouTube or forums.,
when i wrote MBR mode and FAT or EXT its way to trick the SPI to handle the stick as part of HW... this TV linux.. and who know or worked with Linux FW & HW and compile stuff will never say there are no way

one things more i gave link for factory firmware 0000 which its only allowed you to downgrade.to 0000 then you are free what you will do withe set

[Davi.p]

In fact there's no way!! Samsung update via net / usb needs entering sub menu..

[Diah]

How would I go about installing new firmware when all I can see when the tv turns on is the samsung smart tv logo and nothing after that. Is there a way to reinstall firmware without having any display on the tv?

well to tell the truth its hard ... in yours case only replace mainboards ..... but you can try this
go there and download firmware version 0000 its German one , which we use it to downgrade then we can install any other firmware or root the TV.
in yours case you need for yours H this one T-MST12DEUC.zip
ready USB stick as small capacity as you can no more than 2GB.. formatted in FAT MBR mode... and try different way by just the last file upgrade.msd to put it on the stick.... or image.... or the complete folder of T-MST....

good luck

[Super360]

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

How would I go about installing new firmware when all I can see when the tv turns on is the samsung smart tv logo and nothing after that. Is there a way to reinstall firmware without having any display on the tv?

[Davi.p]

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

[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.

[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

[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..

[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.

[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%

[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.

[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.

[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.

[yokoono]

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

[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 !!!

[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]

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.

[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.

[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.

[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