Sony KDL-40S504 6 blinks

[tibimakai]

Re: Sony KDL-40S504 6 blinks

What happens if you reduce all those settings where is the Gamma?
They are all on high setting.
It can't be a weak ccfl tube? If I understood correctly, when the tubes are getting weak, they show a pinkish screen, no?

[tom66]

Re: Sony KDL-40S504 6 blinks

Gamma is t-con only, used to linearise display brightness.

Weak CCFL cause 2-secs to black or pink tint, but that wouldn't be so obvious here. This is clearly some formatting/mode error IMO.

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

I dont think so that's the only firmware I found on their site unless they have them archived somewhere else..

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

The best Ive been able to tell is the T-Con and main board are correct parts for the panel. The only thing that spiked my curiousity is when I took the T-Con out, it had a "V" marking on the back of the board which I have seen when purchasing some boards on ebay from a certain seller. So maybe this board is the wrong one or even faulty.

If anyone is familiar with these here are the parts I have:

Panel: LTY400HA12
T-Con: Samsung LJ94-02814D

I can't be sure but it doesn't look like anyone had been inside this TV before...

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

I found this video on how to bypass a bad bulb on this type of backlight setup

https://www.youtube.com/watch?v=oE6K4xBVweA

and it worked for the 2 seconds to black, but now it has a 10 seconds to black. The LD line stays high (around 11V) on and through startup, then goes low after about 10 seconds, there's probably more bad bulbs.

I really don't wanna dive into the panel knowing I have this other weird video problem too...

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

So I got around to replacing 2 bad CCFL bulbs in this TV, and the backlight issue is fixed. Now the weird color issue.

Anyone know how to get into the factory menu on this model?

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

Got to this menu but was hoping to get to a menu where you can see the panel type..

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

Is this most likely a main board issue Im not gonna be able to fix, or possible T-Con?

[tom66]

Re: Sony KDL-40S504 6 blinks

Main board. The format is wrong but I do not think it can be changed on these sets, without replacing the main board.

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

I wish I can find an older firmware as Im not sure it was like this before I upgraded it. Is there a site that archives firmwares?

[tom66]

Re: Sony KDL-40S504 6 blinks

You may try asking Sony nicely, though I don't expect a good response.

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

Replaced main board on this one and that fixed color issue, thanks Tom.

Double whammy on this one, 2 bad bulbs and a bad main board.

[tom66]

Re: Sony KDL-40S504 6 blinks

More likely, user or service tech attempted replacement of main board without matching up part numbers.

[kevinm34232]

Re: Sony KDL-40S504 6 blinks

I ordered the same part # that was in there though, so Im thinking maybe the firmware screwed it up but not sure...