Sony KDL-40VL160 T-Conn or LCD

[krumian]

I have this Sony TV that I purchased in late 2009. I started getting horizontal lines one one side of the screen and the other side is all black. If I disconnect the T-conn then I get white. The TV stays on and if I recall the red LED blinking sequence, I get 14 blinks. I've read that this could be either the T-conn or the LCD itself. I'd appreciate any feedback. Thank you.

[krumian]

Re: Sony KDL-40VL160 T-Conn or LCD

Any advice? Thank you.

[Andrew F. Ali]

Re: Sony KDL-40VL160 T-Conn or LCD

If you disconnect LEFT side cable of T-CON Bd to Panel but leave the RIGHT side cable connected and power ON TV...What do you get on the Right side of the Screen??....AND....if you reconnect the LEFT side cable and disconnect the RIGHT side cable and power ON TV...What do you get on the Left side of the Screen??....

[krumian]

Re: Sony KDL-40VL160 T-Conn or LCD

I am out of town right now but I remember when doing that, I would get a white half of the screen. I just don't remember if the white half was on the side I disconnected or on the opposite side. I'll check when I'm back in a few days. Thank you.

[krumian]

Re: Sony KDL-40VL160 T-Conn or LCD

So I tested the screen and as I thought, the side of the t-con that I disconnect goes white. As soon as I reconnect, the lines come back. Any suggestions? Thank you.

[Andrew F. Ali]

Re: Sony KDL-40VL160 T-Conn or LCD

Is that for both sides??
Measure and report these voltages on your T-CON Bd. In brackets are what you could expect.
Vcc (5Vo12V) on both sides of the fuse F1
Von (20V~30V) may see it as VGON,VGH, VDDG
Voff (-5V~-8V) may see it as VOFF, VGL, VEEG
Vdd (3.3V) may see it as VLOGIC, VDDD, DVDD
Vda (13V~20V) may see it as AVDD, VDDA, V Source

If these voltages are OK you have a bad Panel. If they anot good, try a new T-CON Bd.