LNT3242X Samsung no picture

[dbtsat]

Hi everybody,

I need advice from the expert please....I,m fixing 32" samsung tv Model LNT3242HX, the problem is ...No picture...the power is good...when you turn on the LED on the front light-up and samsung sound on, backlight at the back turn on for 3 to 4 blinks and it shut down but the standby light on the front stays on. I changed the Inverter board with the good one but still same problem. I inspected all capacitors on the power board and all of theme are good.

need help please for this problem thank you in advance...

dbtsat

[johnboy1313]

Re: LNT3242X Samsung no picture

I just fixed a Sanyo with the same problem. I turned out to be two bad bulbs. I'm not familiar with your specific TV. On mine, if I unplugged the BL_ON from the inverter board, I could get the lights to light long enough to get a good look at the screen. I didn't think it looked like any bulbs were out, but once I got into the panel, there were two out.

In this picture, you can see a slightly darker horizontal band about a 1/4 of the way up. Right where the word Fun is and another at the very bottom.



This is what I found when I got into the panel.



The bad bulbs are in the exact same spot as the darker bands.

Hope this helps. Good luck. If you do figure it out, make sure to report back. I see way too many posts with no follow up. It makes it hard for the next guy with the same model and problem.

[budm]

Re: LNT3242X Samsung no picture

OK, do you still get 24vdc feeding the inverter when the backlights turn off? Also need to see if you also has BL_ON signal (>3vdc) at the inverter board.
Good clear pictures of the boards will be needed, use the 'GO ADVANCED' to upload the pictures.

[dbtsat]

Re: LNT3242X Samsung no picture

Thanks for the quick response...i will open and check the bulbs i will post back the result...thanks again.

[johnboy1313]

Re: LNT3242X Samsung no picture

Take your time with opening the panel. If it were me, I'd try to get the lights to fire and look for dark bands before I opened the panel up.

[budm]

Re: LNT3242X Samsung no picture

Opening the LCD panel assmbly is the last thing you will want to do since you can easily crack the screen. So verify the basic first such as voltages.