Sony Bravia KDL-46EX640 no power

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

This is the result if I put high values on brightness, contrast, etc.

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

@ holmzy: can you please point out what parameter do I have to check?

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

ok many thanks. will update once I have time.

[holmzy]

Re: Sony Bravia KDL-46EX640 no power

looks like u got the right panel number, i think the model names does not matter since the panel is right. looking at the service menu i can see at least one setting that conflicts with yours. match it according to the manual. but honestly i think one of your cables to the t-con / mainboard might not be in properly. doesnt to clean and reconnect

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

As you can see the model name is KD556EX640 but my TV is KDL46EX640 and the Main Power registers 001. Any suggestions?

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

More infos regarding service menu:

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

additional pics added for more infos:

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

still no progress. need help

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

been busy lately but will accept suggestions. will update once i have time to check the mainboard again

[holmzy]

Re: Sony Bravia KDL-46EX640 no power

also 1 firware update affects all these TV's

KDL-32EX403 / EX500 / EX501 / EX503 / EX505 / EX508 / EX603 / EX605 / EX700 / EX701 / EX703 / EX705 / EX706 / EX707 / EX709 / EX710 / EX711 / EX713 / EX715 / EX716 / EX717 / EX719 / NX503
KDL-37EX403 / EX500 / EX503 / EX505
KDL-40EX403 / EX500 / EX501 / EX503 / EX505 / EX508 / EX603 / EX605 / EX700 / EX701 / EX703 / EX705 / EX706 / EX707 / EX708 / EX709 / EX710 / EX711 / EX713 / EX715 / EX716 / EX717 / EX718 / EX719 / HX700 / HX701 / HX703 / HX705 / NX503
KDL-46EX403 / EX500 / EX501 / EX503 / EX505 / EX700 / EX701/ EX703 / EX705 / EX706 / EX707 / EX708 / EX709 / EX710 / EX711 / EX713 / EX715 / EX716 / EX717 / EX718 / EX719 / HX700 / HX703 / HX705
KDL-52EX700 / EX703 / EX705
KDL-55EX500 / EX503 / EX505 / EX710 / EX711 / EX713 / EX715
KDL-60EX700 / EX703 / EX705

[holmzy]

Re: Sony Bravia KDL-46EX640 no power

I have a 52ex703 and for the life me could not figure out how to change the model version. Im 100% certain it is possible on my tv as its the exact same board for 7 different size models and even the service manual states change to your panel type but does not show you how which I find very sneaky! somone must know how to do it or get into the hidden menu like on samsung tv's

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

Any suggestions?

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

I think my plan is bad. Sony website states you cannot revert to previous firmware version.

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

Well, I again visually checked the original mainboard and the one that I bought (it displays 55" not 46" in its current firmware version). Comparing the two visually I could say it is all same ie components, etc.

My plan is since the mainboard I bought gave life to the TV except it is showing greenish display and I also bought a T-Con board and result is still the same. So, this mainboard I bought displays 55" instead of 46" in its firmware, is it OK if I flash it with a lower 46" firmware and then flash it with the latest 46" firmware?

The firmware version of the mainboard that I bought is current but I cant reflash it again since it will display the version is current and no option to reflash except cancel option.

Any suggestions? Please?

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

Update:

Got the T-Con board. Same thing. No progress.

Time to take a closer look at the original mainboard. Any suggestions/help is appreciated.

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

I'm the other way around, I have a 46" board and 55" TV. Shopjimmy states, that it should be compatible.

Thank you very much for the info. Will update soon.

[tibimakai]

Re: Sony Bravia KDL-46EX640 no power

I'm the other way around, I have a 46" board and 55" TV. Shopjimmy states, that it should be compatible.

[tibimakai]

Re: Sony Bravia KDL-46EX640 no power

I'm the other way around, I have a 46" board and 55" TV. Shopjimmy states, that it should be compatible.

[bullwinkle]

Re: Sony Bravia KDL-46EX640 no power

Oh my , ok thanks for the info tom66.

[tom66]

Re: Sony Bravia KDL-46EX640 no power

That can cause problems, Sony TVs are notoriously picky about the panel size requirement. You need to use 46" board.