Sony KDL-55W807 No Picture Issue: Backlighting, PSU Voltage, CXA3854 Driver & LED Troubleshooting

Hello,
Tv as above, no image (backlighting), PSU voltage ok, 3.3V backlight on present, driver made on CXA3854, the only thing I found about this driver is: https://www.chatchaielec.com/shop/lang- en / c-series / 2083-cxa3854m.html
Maybe someone told me how to bypass the protection in this IC (I only need to check whether it is the power supply or the backlight), the leds checked with the tester light up all and without delays,

You have the protek on this beetle on pin 27.

I will tell you the backlight.

(KDL-xxW800 series RB1G chassis) uses .... CXA3854
- BL-ON gets all the way to the EN pin 11 to turn on the IC or not.
- sprawdz zasilanie VCC of 12V at pin 24 ( zener dioda na 15V i opornik 4.7 ohm)
* opornośc do masy (pin.24 ) w obie strony

Thank you very much,
This TV came to me at the beginning of the year, after the storm, the motherboard was replaced and it worked without a picture, the client left it, I wrote him a quote for insurance, the insurance company paid and informed me that it could be scrapped, I feel sorry to throw it away, it will be useful, for example, to the workshop,
pin 24 12V, pin11 3,2V,
Pin 27 protect - 3.7V there is a 1.1uF capacitor, when I remove it, the same TV shows error7, if the capacity is higher, it is unchanged, and the external one is also unchanged,
in this power supply, what I have APS-342/6, there is only this capacitor on this pin, this tap, which according to the diagram attached by fox goes to D6851 is not connected. I will add that when I put such a dog (I found somewhere in the trash, I do not know if it was ok) the lighting was flickering a few times and no more attempts were flickering.

Added after 31 [minutes]:

LCD-LED-PDP wrote:

I will tell you the backlight.

Is there any way to locate which one is broken?

Check the feed back voltages from each branch, they should be the same.

Thanks, and could someone show with a finger how to go around protect?

Check if you have a stable 12V,