Samsung QM49R reset EEPROM

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suiramix
Posts: 3
Joined: Sun May 16, 2021 3:47 am

Samsung QM49R reset EEPROM

Post by suiramix »

Hi there,
Got this non-working Samsung model QM49R, like new (Aug 2019), plugged-in, after 5 sec power up (without pressing the power button) with backlight on but no start up sound, no image.
Hard to be power off by the switch or remote.
Pressed on remote control "EXIT" then "Left" and "Enter"...the front red led was blinking!
Restarted and I heard loud and clear ”Please select your language” message… but no image on the screen !!!
Next, I want to Reset EEPROM that means to short the VCC and SDA for 20sec.
On the mainboard (BN94-14556B) there are two chips IC1603_UT (W25Q80D) and IC1604 (W25Q40CL)...
I assume the first one is communicating on I2C protocol even is a serial flash SPI chip.
Please confirm if this is the right one !
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suiramix
Posts: 3
Joined: Sun May 16, 2021 3:47 am

Re: Samsung QM49R reset EEPROM

Post by suiramix »

Looking closer, I did find the 3rd chip on this main board, this time IC801, label SUBMICOM, M24512...can I do a reset on this on ? thanks!
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notengo13
SamyGO Project Donor
Posts: 565
Joined: Mon Nov 30, 2015 12:31 pm
Location: Slovakia

Re: Samsung QM49R reset EEPROM

Post by notengo13 »

Check on spare pages for eeprom
W25Q40CLSSIP
Before do anything check twice that is the correct eeprom.
UE48H6640 T-MST14DEUC 2781.0 root latestH --> 2130.0 skypeRoot-->0000-->2115.3 "Skype refueled" Root

suiramix
Posts: 3
Joined: Sun May 16, 2021 3:47 am

Re: Samsung QM49R reset EEPROM

Post by suiramix »

Hi Notengo,... thanks for the info, I will try to get that chip!

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