samsung ue55mu6192u dead signal LED

[lotas]

Hi Lotas UE55MU6192U IC1604 can you fix please.
Regards
Julo

Hi, try

[jules64]

Hi Lotas UE55MU6192U IC1604 can you fix please.
Regards
Julo

[giova96]

Re: samsung ue55mu6192u dead signal LED



FB_TRDY_1 and FB_TRDY_3

I'm back
Unfortunately the TV did after replacing the board and changing the jumper
5 months later the problem returned
in practice it turns on and off continuously, by removing this jumper and disconnecting one flat lvds at a time the TV remains on (audio present)
while leaving the jumper and disconnecting the flat lvds the TV turns on and off continuously
What could it be?

[nomoresonys]

Re: samsung ue55mu6192u dead signal LED

Okay
I fix the jumper and I will test it for a few hours
thanks for your availability and the many information you gave me, I was about to throw away the TV!
Thanks so much

Is there a reason that this new board did not work as soon as it was put in? from what I understand nothing extra was done to it.

[mdfrkz]

Re: samsung ue55mu6192u dead signal LED

If you do not register it in the spi flash and when you turn on the TV for the first time, the firmware is damaged again.

Thanks, that's exactly what I wanted to know!

[lotas]

Re: samsung ue55mu6192u dead signal LED

@lotas:

Could you please explain why need to check/reprogram the registers?

Open the datasheet on the W25Q40CL and find out why protection is needed.
If you do not register it in the spi flash and when you turn on the TV for the first time, the firmware is damaged again.

[mdfrkz]

Re: samsung ue55mu6192u dead signal LED

@lotas:

Could you please explain why need to check/reprogram the registers?

[lotas]

Re: samsung ue55mu6192u dead signal LED

Well, here you need to check what the power is draining, check the resistance on the DC/DC converters relative to the ground, what is the voltage on the 8 pin of this spi flash 25Q40 (it should be 3.3v).

[Laicae]

Re: samsung ue55mu6192u dead signal LED

thank you Lotas for check,

but i still have the problem with the TV.
The TV will not turn on, there standby light shines pulsating dimly, then brightly, and so on in a loop.
If the dump is OK, what else could it be?

My model TV:
- UE65MU7009T
Mainbord:
- BN41-02570B
- BN94-12542D

Maybe another idea?

[lotas]

Re: samsung ue55mu6192u dead signal LED

Hello,
I suspect I have a problem with IC1604 dump too.
Can anyone check and correct if needed my dump?
Attached my file.
Thanks.

Your Dump is working!

[Laicae]

Re: samsung ue55mu6192u dead signal LED

Hello,
I suspect I have a problem with IC1604 dump too.
Can anyone check and correct if needed my dump?
Attached my file.
Thanks.

[lotas]

Re: samsung ue55mu6192u dead signal LED

They have a series (MU) of a disease with a firmware crash (jumps, power surges in the network) and if you update the software on the TV, then the dump that I fixed will no longer work, you need to backup the dump again and fix it again.

[Finderbinder]

Re: samsung ue55mu6192u dead signal LED

TV is alive! Thank you lotas for unbelievably fast help!
Does anybody knows the reason of failing IC1604 dump integrity? And how soon it may fail again?

[lotas]

Re: samsung ue55mu6192u dead signal LED

Yes, No. 3 unchecked (0x00), the status register is set and written after my dump is written.

[Finderbinder]

Re: samsung ue55mu6192u dead signal LED

One more question, register #3 is FF, does it matter? Or should I set it 0x00 as in your picture?

[lotas]

Re: samsung ue55mu6192u dead signal LED

If I understand correctly I also must edit status registers as you suggested earlier. Right?

Yes (0x88, 0x42).

[Finderbinder]

Re: samsung ue55mu6192u dead signal LED

If I understand correctly I also must edit status registers as you suggested earlier. Right?

[lotas]

Re: samsung ue55mu6192u dead signal LED

Hello,
I suspect I have a problem with IC1604 dump integrity too.
Can anyone (lotas?) check and correct if needed my dump?
All info are in photos attached.

Try.

[Finderbinder]

Re: samsung ue55mu6192u dead signal LED

Hello,
I suspect I have a problem with IC1604 dump integrity too.
Can anyone (lotas?) check and correct if needed my dump?
All info are in photos attached.

[lotas]

Re: samsung ue55mu6192u dead signal LED

Ok