Page 1 of 3
eeprom unbricking for C8790 models
Posted: Tue Jan 15, 2013 8:08 pm
by bossi
Hi there,
I have to unbricking UE40C8790,
Panel 40A2UF1E,
Board BN-94-03469A
where to find eeprom chip...
any suggestions ?
Re: eeprom unbricking for C8790 models
Posted: Tue Jan 15, 2013 8:09 pm
by juusso
What`s the situation? How have you got brick?
Re: eeprom unbricking for C8790 models
Posted: Tue Jan 15, 2013 8:19 pm
by bossi
Service Menu failed model selected..., boot loop...
Re: eeprom unbricking for C8790 models
Posted: Tue Jan 15, 2013 8:23 pm
by juusso
Take hi-res photo of your whole mainboard and attach here. We need to inspect every 8-pin chip (lables as well), so you can do more photos by pieces. We don`t have your m/b and eeprom location. Look at this wiki article. You have to search for 8-pin chip, labeled ATML.. or just digits (eg. 24512) near to the SoC.
Re: eeprom unbricking for C8790 models
Posted: Tue Jan 15, 2013 9:37 pm
by bossi
https://www.dropbox.com/sh/hwqfncfymlut78e/uXgMYIkALD
now here the folder with the new files in.. with better resolution...
Re: eeprom unbricking for C8790 models
Posted: Wed Jan 16, 2013 7:15 am
by bossi
juuso wrote:tinypic.com, dropbox, multiupload...
hope this links works.. and all the needed chips are able to see...
additionally I found out that C6820 model is selected actually on the board..,
My NAS system has reported that model.
Re: eeprom unbricking for C8790 models
Posted: Wed Jan 16, 2013 8:23 am
by juusso
Sorry, you`ve done not stable shots, cant see any 8-pin chip labels. pls write down and post here. Thanks. Phots aren`t enough quality to inspect

Re: eeprom unbricking for C8790 models
Posted: Wed Jan 16, 2013 10:43 am
by bossi
I'm looking for better photos (Ipad in hand isn't good enough).. I will made .ARW pics with higher resolution this evening and with tripod if possible..
Could you view .ARW Picture files ?
Re: eeprom unbricking for C8790 models
Posted: Wed Jan 16, 2013 10:44 am
by juusso
You just could post labels of 8 pin chips next to the photos in
this post.
Re: eeprom unbricking for C8790 models
Posted: Wed Jan 16, 2013 8:51 pm
by bossi
I have updated my posting and sharing of the pics and now it should be possible to read the
chips..
I see Z1021HAI | ZA0E37
Z1031AI | ZA0H38
on the backside of the board I found a chip IC8002 with was labeled ATLMH016 and nearby i found a description TP_FRCS_EEPROM_WP
and a second one IC 8505 beginning with (maybe) 4256BRP (it's not good to read) and here a description like TP-LD-EEPROM_WP
Question: Are there "two eeprom chips" on the board ?
1. for Firmware / Operating System IC8002 found here
https://www.dropbox.com/sh/hwqfncfymlut ... C00183.JPG
2. for Settings / Configuration IC8505 found here
https://www.dropbox.com/sh/hwqfncfymlut ... C00191.JPG