Philips 50pus6503/12

[porfyriadhs]

Hello to everyone. I have problem with the Philips 50pus6503\12. I have bacight but no picture . Tried removing ribbon cables, the left one then the right with no lunk. Then I tried to put some tape to cover the lines but nothing changed at all. Need help thanks

[porfyriadhs]

[Diah]

flash firmware again with format upgrade-_loader

[yokoono]

Try this. Unzip, put on a stick (formatted FAT32), unplug the TV, plug the stick into the usb, plug the TV into the socket. Update starts. Wait for it to finish.
https://files.fm/u/8xku5qkpg6

[porfyriadhs]

First i thought that was a shorted panel issue . I will try on Monday

[porfyriadhs]

need to name of the folder ? . I was waiting 5 minutes nothing changes

[yokoono]

1. There is no folder
2. It is a single file
3. Also try renaming upgrade loader.pkg

[porfyriadhs]

[yokoono]

OK. Put the file on the stick and try again.

[porfyriadhs]

Nothing changes 😵😵😵

[Diah]

download this file--- unzi it and copy the file on usb stick.. formated in MBR mode fat32

[porfyriadhs]

ok i did everything right for the first 5 min it was with a black screen and eventually it starts but without image only backlight

[William1967]

Reloading the firmware (upgrade_loader) also makes little sense if there is no image. Then you would benefit more from resetting the Setoption, even though in this case it seems to me that the panel has a problem. Measure whether the t-con receives 12V and then you can measure some voltages on the t-con. An important one is the 15V to the panel.

[porfyriadhs]

I have 12 volylt. But all the other volts are low

[porfyriadhs]

[yokoono]

Measure VGH (positive) and VGL (negative).

[porfyriadhs]

no voltages ...around 0.7v

[yokoono]

1. If VGH and/or VGL disappear when you connect the ribbons from the panel, you have problems with the panel.
2. If VGH and/or VGL are not there even if you have disconnected the ribbons from the panel, then you have a defective T-con. The T-con can also burn due to a defective panel.
3. There are T-cones that come into protection when the ribbons are disconnected.

[porfyriadhs]

i tried bot with the ribbons and without . It is the same

[yokoono]

If the T-con is supplied with 12V and VGH/VGL are missing when the ribbons are disconnected, it may be a defective T-con or in protection. With the mention that the T-con can also burn due to a defective panel.