Samsung QM49R reset EEPROM
Posted: Sun May 16, 2021 5:49 pm
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 !
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 !