SONY Bravia KD-55SD8505 Please HELP!

[goluins]

Hi!My Sony Bravia Kd55Sd8505 2times red blinking!what is a problem?how i can repair that?
After flash usb they turning on but only backlight, remote and sound works,no picture! only one vertical line by the center!Please help me somebody who knows what kind of problem!I will very appreciate!

[trunks81]

Re: SONY Bravia KD-55SD8505 Please HELP!

probably T-con issue what do the fuses measure on the T-con

[Diah]

Re: SONY Bravia KD-55SD8505 Please HELP!

you wrote you have just sound. to approve if you have video signal. just connect the sony with extra TV via scart.. be sure the scart side of the sony side had out put video signal.. if you see the video on the second tv mean main boards okay.. go ahead with t-con check

[Davi.p]

Re: SONY Bravia KD-55SD8505 Please HELP!

Surely you have a bad panel, i see for the first time a tcon with 3 outputs, so the screen is splitted in 3, since you have a central line that i don't see so probably the fault is in central screen board or source cof, but much probably is in side COG not fully repairable. I can't explain all now it's late night...

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

What is it COG?

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

new T-con installed!!

[Davi.p]

Re: SONY Bravia KD-55SD8505 Please HELP!

then?

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

Then 2 times red blink and no voltage to the mainboard! 19.8v 2pinouts and 2.2v 1pinout on mainboard!no 3.3! what is it?

[nomoresonys]

Re: SONY Bravia KD-55SD8505 Please HELP!

Look thru the the little holes in the back, are your backlights purple? You might have more than one issue.

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

no, backlights is white color and its absolutely normal!

[Davi.p]

Re: SONY Bravia KD-55SD8505 Please HELP!

i said bad panel..

[budm]

Re: SONY Bravia KD-55SD8505 Please HELP!

Then 2 times red blink and no voltage to the mainboard! 19.8v 2pinouts and 2.2v 1pinout on mainboard!no 3.3! what is it?

Can you please clarify that? I do not understand what you are indicating "and no voltage to the mainboard! 19.8v 2pinouts and 2.2v 1pinout on mainboard!no 3.3!"
Those Voltages are correct with the old t-con board and now they are not correct?
Can we see good clear hi-res straight shots of the whole T-CON board?

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

Ok give 10 min please!

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

here they are

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

1-tcon 2-mainboard 3-power supply with led driver

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

19.8v and 2.2v from powersup. to the mainbord! 2times red blinked!

[budm]

Re: SONY Bravia KD-55SD8505 Please HELP!

19.8v and 2.2v from powersup. to the mainbord! 2times red blinked!

I am confused.
1) So the 19.8V is the Voltage from the AC adapter where DC jack is, correct?
2) Where is this this 2.2V are measured at? So you have the 2.2V when old T-CON board is installed, correct?
3) How about the 3.3V you are talking about? So you have the 3.3V when old T-CON board is installed, correct?
4) So with the new T-CON board you are still getting 2-blink, correct?
5) So how does the TV acts differently between Old and New T-CON board? Still getting backlights and same image as in your post # 1 when new T-CON is installed? I am trying understand what is going on.

[goluins]

Re: SONY Bravia KD-55SD8505 Please HELP!

1)Yes! the 19.8V is the Voltage from the AC adapter where DC jack is
2)the Voltage from the AC adapter where DC jack is!!
3)no 3.3v at all!!!old t-con is on short!!
4)Yes! Its only on new Tcon board!!Old tcon shows white screen and the line
5)Only if I flash usb port!but after unplug and restart, 2red blinks))
Yes Tcon is installed)

[budm]

Re: SONY Bravia KD-55SD8505 Please HELP!

1)Yes! the 19.8V is the Voltage from the AC adapter where DC jack is
2)the Voltage from the AC adapter where DC jack is!!
3)no 3.3v at all!!!old t-con is on short!!
4)Yes! Its only on new Tcon board!!Old tcon shows white screen and the line
5)Only if I flash usb port!but after unplug and restart, 2red blinks))
Yes Tcon is installed)

So you are telling me that you only get 2.2V at the dc input jack instead of 19V when you install new T-CON board? It sounds like your T-CON board is bad and loading down the 19VDC adapter, the adapter is probably in shutdown/start cycle.

[Davi.p]

Re: SONY Bravia KD-55SD8505 Please HELP!

i see confusion in the answers.. better to carry the tv to tv tinkerer..