Hi, i have a samsung T200HD with this issue.
When i plug the tv i see the backlight for a moment, then i get startup sound and after that nothing more. I can see like a flikering without backlight but nothing else.
So i disassembly the tv and i replace all capacitors without success.
I tested all the ccfl lights with an diy tester and all lights work very well.
The power supply board is a pwi2204st.
Anyone solved this problem or have a solution for me?

Hi, today my SHARP LC32AD5-GY is totally dead. Yesterday the tv was working fine, today i turn it on but i only have the green light when i press the power button. I have no picture and no sound and the tv is stuck on black screen w/o light. If i press the power button the tv doesn't turn off, the only way to turn off is to remove the power cable. There is any way to fix it? Anybody had the same problem?
Thanks

Re: HP 6730s no backlight

Ok, thanks for the reply. Where i can take this voltage from the motherboard?

Re: HP 6730s no backlight

This is my situation at the moment



Anyone can help me?

Hi there, i'm trying to repair an hp 6730s w/o backlight. I try the display and the inverter with another notebook and they work. Now i was measuring voltage with a multimeter. The invterer has 7 input pin.
I've got:
pin 1: 19v
pin 2: 19v
pin 3: gnd
pin 4: gnd
pin 5: 1v
pin 6: 0.01v
pin 7: blank

On pin 5 i originally have a voltage of 3,3v but after some test the voltage fell down to 1v. How can i solve this problem? The voltage on pin are "right"? Thanks and sorry for my english

Re: LG w1934s 2 second to black

Hi, finally i found the problem... it was a ccfl that has gone... at the moment i broke my replacement... I buy a new CCFL but i must wait 1 month or more... is there any way to "isolate" the CCFL inverter transformer to give power only to the working CCFL? I think that i can use the monitor with 3 CCFL for the moment... Thanks...

Re: LG w1934s 2 second to black

ok, thanks for the reply. now i have the tester and i want to check for the 2 red points of transformer. How can i set the dmm? The videos on youtube on post #19 & #20 are not aviable
Thanks and sorry for my noob

Hi, i've a problem with my lg w1934s monitor. It's the "famous" 2sec to black... the monitor power light stay on but the backligh disappear... yesterday i opened the monitor and i change the capacitors but the problem persist. I try all the CCFL singly and all of them works... I've made other test for example leave a single CCFL, the monitor turns on and after 2 sec the backlight disappear... what can i do? I've an iron solder and a DMM but i don't know how to use it becouse i'm noob in EE... i can make soldering but i don't know how to use a dmm
Here there are some pic...