Philips 55PUT6201/12 no backlight

[Dennis74]

Hello The tv got hit by lightning
I replaced The fuse and The tv got
Power but no backlight
I tested The pins that goes to backlight
Got wery low volts 2-3v only
Even if i disconnect The cabel.
Tested disconnet The cabel from power bord to main board but no backlight
volt readings from conector on power bord to main bord
Pson 2.9v
Dim 2.82
Bl on off 3.29
Grund 0.1v
Grund 0.1v
12v
12v
12v
Stand by 3. 6

[dick_barton]

Re: Philips 55PUT6201/12 no backlight

Can you post sharp clear photo's of your circuit boards and give board numbers which would be helpful.

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

Is this ok

[budm]

Re: Philips 55PUT6201/12 no backlight

Pictures are too blur for me to read anything on the board.
We need hi-res straight shot of the whole top and bottom side of that power supply board.

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

Sorry find this online
Is this ok

[dick_barton]

Re: Philips 55PUT6201/12 no backlight

Can you give the names as shown in the red box and the voltage you read at the corresponding connector pin. Picture still too blurred to read the print.

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

I posted The volts before

[R_J]

Re: Philips 55PUT6201/12 no backlight

Check R8101, it is a 0.1Ω fuseable resistor that feeds the led power supply section on the power supply, If the resistor is open, check Q8101 & Q8102 fet's

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

How do i test them?

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

The resistor is open i think
It beeps when i test ��

[R_J]

Re: Philips 55PUT6201/12 no backlight

First learn how to use your mutimeter and what the ranges and readings mean. The value of resistors is in OHMS not BEEPS. So what is the RESISTANCE in OHMS of the resistor. Use the lowest range for this resistor

If it the meter beeps checking the resistor, the likely resistance is between 0 and 150Ω 0~.1Ω=good, anything above a few ohms and it is likely open

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

Is this ok

[R_J]

Re: Philips 55PUT6201/12 no backlight

If that is the value across R8101, then yes it is ok and not open.

[Dennis74]

Re: Philips 55PUT6201/12 no backlight

Okej thanks
How do i test The other ones

[R_J]

Re: Philips 55PUT6201/12 no backlight

Check if you are getting any secondary voltage across either C8116 or C8117. Check for this voltage when the tv is first turned on, if there is a fault with the backlights this voltage will likely come up and then drop off.