UE32B6000 not turning on, service menu

[makeshiftam]

hi,

I wanted to change the model number in the service menu to gain the extra capabilities that changing from B6000 to B7000 gives.

However, I think when changing it I pressed down instead of left/right meaning it when down the menu to 'Tuner'. Now, i didnt know which tuner it was on so I left it but when it came to turning the tv back on, it is now just stuck in a power on/power off loop

I just wish I never bothered now, stuck with no tv

Can anybody help at all?

Thanks in advance,

Adam

[juusso]

1. Have you installed the proper u-boot and kernel with network supporting?

2. Have you set rs232 to debug? Watchdog off?

3. Do you have an exlink cable? What is the output?

[makeshiftam]

I am totally new to this forum, I have been reading about all the debugging. I am quite good at things like this, but this is something new to me.

So basically, no to all those questions... I have been reading about resetting the eeprom as it is only a setting changed not a bad firmware install, what do you know about that?

Thank you so much for replying,

adam

[juusso]

I don't know which chip Is eeprom on your tv, only experience we have is some C series models and some D series. If you had success by identifying it, then you could restore tv back to working state. Use info on wiki and forums...

The situation seems is not promissing for success.

[makeshiftam]

Is it possible for somebody to have a photo or something with values on it in case I manage to find it?

I fear I have just bricked it, I'll see how I get on with this eeprom reset if its the last resort.

[sbav1]

Tuner setting is stored in main EEPROM (256kbit, 32k x 8), look for 8pin chip marked with:

Code: Select all

   ATMLH842
   2EB 1

It may be named differently (S24C256.., whatever part Samsung has on hand at the moment).

Will "EEPROM reset procedure" work for B-series mainboards (models with T-CH* firmware)? Probably not .
AFAIK this particular feature included in C/D-Series firmwares is not yet present in B-series. But I'm not 100% sure about that, it may be worth a try.
Apart from main EEPROM, there is one (or two) small MICOM EEPROM[s] on the mainboard (ATMLH850 02B 1, or perhaps S24CS02A). You can try your luck with that one too; hopefully it may trigger some kind of factory reset (but again - not likely).

If reset procedure fails: well, there are some other possible ways (for gaining access to serial console/disable watchdog/EEPROM contents restoring etc. - purely experimental, AFAIK never actually tested by anyone). In theory, you only have to change one byte value in main EEPROM . It practice that will be a lot of trouble (especially if you have no background in practical electronics). Mainboard replacement: much less trouble, 99% chance of success; they are relatively inexpensive..

[makeshiftam]

thank you very much for that reply, I will try and get round to trying those eeproms when i have time; but like you said chances that will work are slim. I have found a couple of mainboards with exact model numbers, your post has convinced me to just go for that.

thanks a lot for both your inputs /thumbs up

[makeshiftam]

Great news, the eeprom reset worked. Managed to find the wiring diagram for the chip, it took a couple of attempts but its now up and running!

I've put together a picture and diagram showing it.

[sciur]

Hi makeshiftam, can you tell me more detail about how perform eerpom reset on B6000 TV?
I did the same mistake like you.