inova nt24 24 inch backlight problem

[gasinmars]

hi guys the tv is so dark and has a problem with the backlight but in other hand i can see that the tv is working ( i can see the logo of inova)


please guys help me

[gasinmars]

Re: inova nt24 24 inch backlight problem

i think this is the inverter

[selldoor]

Re: inova nt24 24 inch backlight problem

Your pics are very dark - not good for troubleshooting - is this a led tv - The small board in the last picture what is that? led controller?

[gasinmars]

Re: inova nt24 24 inch backlight problem

it's lcd it's not led

[selldoor]

Re: inova nt24 24 inch backlight problem

Well I cant see an inverter or inverter transformer/s
What is that small board - Board number??

[tom66]

Re: inova nt24 24 inch backlight problem

That looks like an LED power supply, but I can't see an output connector??

[gasinmars]

Re: inova nt24 24 inch backlight problem

this is the inverter

[gasinmars]

Re: inova nt24 24 inch backlight problem

these are the rest of the boards , one is logic and the second is the power supply

[gasinmars]

Re: inova nt24 24 inch backlight problem

backlight

[gasinmars]

Re: inova nt24 24 inch backlight problem

this is the model of the screen and the little cable that connect to the inverter

[gasinmars]

Re: inova nt24 24 inch backlight problem

why there is no backlight but i can see that the screen is working

[gasinmars]

Re: inova nt24 24 inch backlight problem

logic board

[tom66]

Re: inova nt24 24 inch backlight problem

In this case it is not an inverter but an LED driver, because this screen does not use CCFL, it uses LED backlight.

So you can use your multimeter to measure the voltage across the red and black on the LED driver with everything connected and see if it is OK or not.

[gasinmars]

Re: inova nt24 24 inch backlight problem

it told me 69 volt

[gasinmars]

Re: inova nt24 24 inch backlight problem

power supply

[gasinmars]

Re: inova nt24 24 inch backlight problem

it should be more than 69 volt right?

[gasinmars]

Re: inova nt24 24 inch backlight problem

do you mean to check the voltage of those pins that has red circle mark?

i have already checked those and it give me 69 votls , is it enoght voltage to let the backlight power on ?

[tom66]

Re: inova nt24 24 inch backlight problem

Sounds reasonable for a 24" panel, unfortunately I cannot find any info to tell for sure but it seems OK. I think the fault therefore is with an LED in the panel.

[selldoor]

Re: inova nt24 24 inch backlight problem

error thought another red circle.

[gasinmars]

Re: inova nt24 24 inch backlight problem

so the led panel not the boards ?