Samsung S42AX-YB04 click noise

[Zizio|Kriminal]

Hi folks, I have a problem with my Samsung (Model S42AX-YB04). The TV turn on automatically and a relay makes a click noise every 15-20 seconds but no audio/video. No capacitors are blown in the power supply, and voltages in the power supply, X-Main e Y-Main seems to be OK. I've even tested the T-CON board by shorting the pins 3-4 and disconnecting the LVDS cable, and I see the test color pattern, that seems (i think) that the panel and T-CON board works properly.
Now, my last try is to short the 5-6 pins on the eeprom located on the mainboard in order to reset it, and now the TV remain in standby, but if I try to power on with the remote the IR responds, but the tv won't turn on.
Any suggestion?
Thanks in advance (and sorry for my bad english )

[jose6326]

Re: Samsung S42AX-YB04 click noise

Post pics of the boards

[Zizio|Kriminal]

Re: Samsung S42AX-YB04 click noise

Thanks for your reply. here's some pics of the boards (sorry for the quality of the image).

[Zizio|Kriminal]

Re: Samsung S42AX-YB04 click noise

UPDATE: I've read that there's a method to reset the eeprom located in the main board: the way is to shorting EEPROM's pin 5-8. Anyone has already tried that method?

[Zizio|Kriminal]

Re: Samsung S42AX-YB04 click noise

UPDATE: I've changed the EEPROM of the main board with a new one, nothing happens: same problem. Anyone can help me?

[Alastair E]

Re: Samsung S42AX-YB04 click noise

Have you installed any firmware in the eeprom before replacing it?

What firmware did you use, where did you get it from? The set wont work without a good firmware in the EEPROM.....

I think you have probably bricked the mainboard--by attempting shorting things out on it!

[Zizio|Kriminal]

Re: Samsung S42AX-YB04 click noise

the new EEPROM is blank, no firmware was previously installed. But as I read in many threads, in this EEPROM there are stored the settings of the TV, so performing a reset could unbrick the TV..
There's an example:
http://wiki.samygo.tv/index.php5/UnB...y_EEPROM_Reset

[Alastair E]

Re: Samsung S42AX-YB04 click noise

Err--yes, But the operating firmware is also stored in that eeprom.

Now--IF the operating F/W is corrupted, no resetting will ever help, as its--Well, Corrupted.

Same would be case of a Blank eeprom. Processor first looks at eeprom, finds literally Nothing--so, It does exactly that--Nothing!

TV sets, Computers, and all this electronic stuff--are in fact REALLY STUPID! The things cant do anything without instructions held in the F/W--Its their memory.....
--What you have done by replacing eeprom with blank--is give the set Altzheimers!

I would advise you either buy a new EEPROM complete WITH the Correct F/W for That Exact set--Or replace the whole mainboard.

[Zizio|Kriminal]

Re: Samsung S42AX-YB04 click noise

Uh, ok. Seems legit Thank you for your support. Now, all I need is to find the right firmware and a programmer..