42pfl5405/h05 philips lcd tv backlight problem

[Xristakis795]

Hi i have the above tv and has backlight problem
I noticed with a flashlight that I have picture and sound when I put an antenna
My problem is that I do not have a device to test the fluorescent lamps and extend the transformer high to see which of the two is to blame and to give a solution to my problem
I was thinking an easier solution would be to turn the TV into a LED but I had done it before in another (different model) and it looked like bright dots behind the lcd panel and it was ugly
What do you recommend ?

[petehall347]

Re: 42pfl5405/h05 philips lcd tv backlight problem

i used to test inverters with spare tubes i had lying around .

[Xristakis795]

Re: 42pfl5405/h05 philips lcd tv backlight problem

you mean the room is dark and I get a fluerecent lamp
to pass it over the transformer and if it lights up it means that the transformer is good;
But if one of the panel lamps has a problem, the inverter circuit will not be protected, so it will not give voltage to the Transformer;

[petehall347]

Re: 42pfl5405/h05 philips lcd tv backlight problem

no i used tubes from old panels and wired them up .

[Xristakis795]

Re: 42pfl5405/h05 philips lcd tv backlight problem

aaa i understood
in my case only two cables leave from the inverter to the ccfl lamps
How did he do it, did he connect them in parallel?
Can I disconnect these cables and put them in a single functional ccfl lamp to see if the inverter is to blame?