Ga door naar hoofdinhoud

Repareer je spullen

Recht op reparatie

Winkel

Help

Deze versie is geschreven door: jayeff ,

Tekst:

Hi @johnny_k
 
One of the quicker ways to isolate the problem is to use a [https://www.ebay.com/p/1373223354|backlight tester] (examples only) as this can be used to test the backlights without power being applied to the TV, thereby removing any “interference” by disconnectingthe boards as to whether they operate or not.

The tester is connected directly to
the LED power supply lead which has been disconnected from the board and connecting the tester directly to itpower board.
One of the quicker ways to isolate the problem is to use a [https://www.ebay.com/p/1373223354|backlight tester] (examples only) as this can be used to test the backlights without power being applied to the TV, thereby removing any “interference” by disconnectingthe boards as to whether they operate or not.

The tester is connected directly to
the LED power supply lead which has been disconnected from the board and connecting the tester directly to itpower board.
 
''If the don’t work'' then it is in the LED backlights somewhere, either the connection to the backlights or in the LED strips themselves.
 
''If they do work'' then it is harder as it may be in the power board since you have replaced the mainboard, but it still could be in the cable connection between the mainboard and the power board e.g. signal to turn on the LED backlights may be missing. Without a schematic of either board (I couldn’t find them anyway, you may have better luck) it would be difficult to know which wire this was on.
 
Usually there is audio when there is only a backlight problem so hopefully there isn’t something else as well.

Status:

open

Bewerkt door: jayeff ,

Tekst:

Hi @johnny_k
 
One of the quicker ways to isolate the problem is to use a [https://www.ebay.com/p/1373223354|backlight tester] (examples only) as this can be used to test the backlights without power being applied to the TV, by disconnecting the LED power lead from the board and connecting the tester directly to it.
 
''If the don’t work'' then it is in the LED backlights somewhere, either the connection to the backlights or in the LED strips themselves.
 
''If they do work'' then it is harder as it may be in the power board since you have replaced the mainboard, but it still could be in the cable connection between the mainboard and the power board e.g. signal to turn on the LED backlights may be missing. Without a schematic of either board (I couldn’t find them anyway, you may have better luck) it would be difficult to know which wire this was on.
 
Usually there is audio when there is only a backlight problem so hopefully there isn’t something else as well.

Status:

open

Origineel bericht door: jayeff ,

Tekst:

Hi @johnny_k

One of the quicker ways to isolate the problem is to use a [https://www.ebay.com/p/1373223354|backlight tester] (examples only) as this can be used to test the backlights without power being applied to the TV, by disconnecting the LED power lead from the board and connecting the tester directly to it.

''If the don’t work'' then it is in the LED backlights somewhere, either the connection to the backlights or in the LED strips themselves.

''If they do work'' then it is harder as it may be in the power board since you have replaced the mainboard, but it still could be in the cable connection between the mainboard and the power board e.g. signal to turn on the LED backlights may be missing. Without a schematic of either board (I couldn’t find them anyway, you may have better luck) it would be difficult to know which wire this was on.

Status:

open