Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

[8cuda]

The Samsung does power on and chimes.
No picture and the screen is black, with a very very very faint gray, see photo
None of the caps look exploded

[budm]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

You need to check the surface mounted fuse and voltage on the fuse of the T-CON board which is under the metal shield at the bottom center for the screen.

[8cuda]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

T con board F1 has voltage of 12.38v
Power supply is putting out voltage

[budm]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

OK, at least we know that the main board sends the voltage to the T-CON. By the way, you can mount the board back in place without the cover, and make sure to put one of the ribbon cable back in place, it looks crooked.
Did you check around to see how much this T-CON board (use the numbers as printed on the bar code sticker) is yet? Not sure how far we can troubleshoot down to component level.

[8cuda]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

I also noticed 2 to 3 verticle lines on the right side at start up, then they disappear after few seconds.

I will shop on ebay for a board, if that is the best place to find replacement parts no.
D03194K0K0A9
013689

The cable on the left is tweaked, I aligned the line across the cable with the connector, then clamped the connector.

[budm]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

I get most of my boards from shopjimmy.com and never get defective boards yet.

[8cuda]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

shopjimmy board just came in, and I swapped the T Conn board, now I have the solid white band on the left and light band on the right(see the text after aspect ratio).
I don't know the history of the LCD.

Could the LCD panel be bad or T Conn board is faulty or the cable are not correctly installed?

[tom66]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

The LCD panel is bad but it could be potentially rectified by fiddling with the tab bonds. You must take ESD precautions when replacing t-cons. I touched the t-con->LCD interface and fried an LCD panel; it ended up with a stuck vertical line.

[hossrh]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

What component is messed up on the power supply if pins 6&7 don't show the 10.5V for the inverter

[dreadnok]

Re: Samsung LN46C530 46" LCD No Picture-Backlight or Inverter Power Issue

T con board F1 has voltage of 12.38v
Power supply is putting out voltage

I have the same model that will power on and hear the power up sound. I disconnected the CM802 and the backlight does not come on. On the connector CNI802 Pin 6 and 7 I have 8.8V not 10.98V as in the above picture. My TCON board pico fuse has a K on it. I get 12.3V on both sides.

Is 8.8V on pin 6 and 7 to low?