Chip B: Z1360AI
Chip C: G2992B
Chip D: P1J8G4
Chip E: P249G4
Mainboard with chips labled
Sorry the mainboard one is kind of shitty, but it's the best I was able to get it. The others are fairly good I think. If you have any questions let me know.
Chip C is actually a power control chip, so I don't think that's EEPROM Don't need to worry about that one but I included it anyway. Chip A I think is another type of control chip, I forgot exactly what it was but there are 5 of them for a control purpose and I do not think they are EEPROM related. So that leaves the other 3 chips, all which are unique.
Edit: So sorry the images do not fit in the page, lol. Right click them and open in a new tab please, then you can see the full ones. If this is a problem let me know and I will fix it Thank you again.
This cable then connects to another board at the bottom of the TV that has more IC's on it. Does this mean it's possible the IC is on another board and not the main one for EEPROM? As you can see, there are solder points labeled EEPROM SDA, EEPROM SCL, and EEPROM WP, pins 72, 73, and 74 respectively according to the service manual. Unfortunately the service manual does not include any PCB schematics (my old Sony one did, what a shame) for this particular TV.
Ah, a google search of the chip # brings up EEPROM CMOS and here is the datasheet. http://pdf.datasheetcatalog.com/datashe ... 655_DS.pdf
Looks like pins 8 and 5 or 5 and 4 need connected. I will wait for your feedback before testing. If this is the right chip then let's update the wiki.
Thanks again in advance.
I ordered a replacement main board (it wasn't THAT expensive so I didn't mind plus I had paypal money stocked up) and when I booted the TV it had all the settings that were stored in the new main board. All the service settings were default and I changed RS232 to Debug from UART, turned the TV off, shorted the S24C32, turned the TV on and it booted as normal. Service setting that I changed on the new board from UART to Debug was still set to Debug.
Either, I am not shorting the chip right (which I doubt) or it isn't the right chip. So, back to trying to find the right chip. Any ideas? I have my original board to test stuff out on so we can find out.
I found the EEPROM on S24C512 under the lower metal radiator (meaning towards down side of the tv). I will add pictures.
I know it is this the EEPROM as I have studied the EEPROM research done by you before on D panel and then tested until I found the address where it is changed the panel type: 3E2 bit 1 with values 0E for panel 51", 0F for 60", 10 for 64", 11 for seekpanel ... these values I tested.
I am wrong?
I needed to find this because I try to solve a mainboard change. The new mainboard is from a 64" europe and my tv is 60" US (both F8500).
Previously I installed a 51" mainboard europe on a 51" US and it was plug & play (both F8500) so the region change is not an issue.
TV is starting with audio only. I did a factory reset from service menu without seeing the screen and the music started automatically as should after factory reset.
In the setting there are 2 things different: panel type and logic s/w where this logic s/w if linked to the panel size. I do not know how this logic s/w works and if it.
I would appreciate your thoughts!
PS51F8500 (from PN518500) T-FXPDEUC-1125 (from 1114.1) SamyGo, fixed HBOGO; Still learning this