Re: Sony KDL-42ex440 went black and slight pop from speaker

You can not get the board new so I had to go to everyone's favorite aucton site. I found three boards out there and did a best offer deal with the closest one with best ratings to match the lowest price out there. $35 with free shipping.

Had the board in two days and back together working in 30 mins.

Re: Sony KDL-42ex440 went black and slight pop from speaker

Got replacement tcom board and we are back in action. Thank you everyone for the help.

Re: Sony KDL-42ex440 went black and slight pop from speaker

New tcon board then correct?

And yes that image is the tcon board I have.

Re: Sony KDL-42ex440 went black and slight pop from speaker

That is the problem it shuts off in two or three seconds. With the lvds cable plugged in and I plug the TV into an outlet the green power led is lit up and two seconds later it goes off and no power anywhere (also hear a residual sound through the speaker when the led goes off). No red led and no light coming from the led screen.

Any ideas on how to test this? Is there part of the ribbon cable I could test?

Re: Sony KDL-42ex440 went black and slight pop from speaker

Power board with cable between it and main board unplugged. Plugged in power turned off.
Ac off det = 3.3 Vdc
Vcc 3.3 stby = 3.3 vdc
Everything else is zero

Lvds unplugged but main board plugged in with power board.
Standby (red light on) / power on (green led)
Panel power = 0v / 12.5v
Panel power = 0v / 12.5v
Audio 12v = .35v / 12.5v
Audio 12v = .35v / 12.5v
Vcc 12v = .35v / 12.5v
Vcc 12v = .35v / 12.5v
Ground = 0 / 0
Ground = 0 / 0...

Re: Sony KDL-42ex440 went black and slight pop from speaker

Lvds plugged in only and the green power light goes for three or so seconds the it shuts off. Residual pop sound through speaker.

I only get like two or so seconds to check voltage before it all shuts down.

Re: Sony KDL-42ex440 went black and slight pop from speaker

Here is the layout and close up of the tcon board.

I check the fuse and could only get a slight voltage across when i plug it in for a second then it goes to zero...

Last night my wife and I were watching tv and all of a sudden it turned off. We heard a slight pop from the speaker (residual sound going through speaker). Tried the remote and nothing. I unplugged tv and plugged back in, the power led turned green then pop it shut off again in three seconds (no back light).

I removed the back of the tv and checked out the power board and everything looked good, no bad caps and the voltages all checked out under power. When I unplugged the cable going to main board the led powered up, the remote allowed me to turn it on off standby. Plugged it...

Re: New Members - please post your introductions here

Just joined. Corey here in Milwaukee WI.

Found this forum when I went looking for what happened to my TV tonight. Great site and can not wait to help.