No Standby Light on Samsung SAMSUNG UE65NU7022

[SJX1290]

I have Samsung UN65MU6300FXZA with Mainboard BN41-02662A, dead , No Standby Light. I suspect result of main power jumping. Checked all voltages on main board ok,..
My main suspect is bad flash memory, ...
Any suggestions or can someone please check dump file, in the attachment
Thank you

[lotas]

I have Samsung UN65MU6300FXZA with Mainboard BN41-02662A, dead , No Standby Light. I suspect result of main power jumping. Checked all voltages on main board ok,..
My main suspect is bad flash memory, ...
Any suggestions or can someone please check dump file, in the attachment
Thank you

So which TV do you have: SAMSUNG UE65NU7022 or Samsung UN65MU6300FXZA?
Try this dump.

[SJX1290]

..oh sorry, UE65NU7022, one in mind, one stays in comp

[lotas]

..oh sorry, UE65NU7022, one in mind, one stays in comp

So did my dump help you?

[SJX1290]

No, still nothing. Maybe I am doing something wrong or...when I delete flash is till some dato on (picture Reset), and after reprograming shows me Verifivcation error (pic 2 Dump)

[lotas]

Start by removing the protection (status register), erasing the chip, recording and checking. It is better to use NeoProgrammer V2.2.0.10.

[SJX1290]

Iam programing with chip on board, is it better do desolder/remove it?

[lotas]

Yes, it is better to unsolder through an adapter....

[SJX1290]

This time started with led light, but shortly vent off, after short time started blinking, 5 times ... then again one long red light and 5 shorter....and shows that remote signal is recepting

[lotas]

Does the backlight turn on when the motherboard is turned off?

[SJX1290]

When I disconnect MB backlight is on...have two same TVs, one is ok, so checked most of other scenarios. We are nov one step further...what about other flah chip 25q80..was wondering if maybe this one is also corrupted

[EazyBone]

Did you swap boards from the two identical tvs you have? You have the easiest diagnosis tool there is. Or do you know it's main board and want to fix that way or something

[SJX1290]

I swaped MB boards, checked power on the one, but is somehow demaged..hopefully are just flash memories, if not, will be change of MB. Diagnosis done..

[lotas]

Yes, try reading from a working TV 25q80 and writing it to this motherboard, provided that their panel numbers are the same (and save your original dump!).

[SJX1290]

nope, 25Q80 rewriten, same situation..

[lotas]

Try setting and writing status register (0x28,0x00) after writing my dump.

[SJX1290]

unfortunatelly same result, start with led light, but shortly vent off, after short time started blinking, 5 times and back again, one long red...

[lotas]

Well, apart from the firmware, there is also a problem with the motherboard...

[SJX1290]

Ok, too bad,.. I will look now for new MB. Thank you for all your support, Appreciated

[lotas]

Then look for the number on the paper tag, it usually starts like this BN94-xxxxxx.