LCD Backlight fail but come back sometimes. Diagnostic?
文本:
Hello,
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to unplug the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
Is this a suggestion of what can fail?
I don't know if i have a screen problem, Logic board problem or LED Driver purchased problem.
Additonal information: the screen since time ago (when works) shows some dark vertical columns. Like this:
UPDATE: Today (22.01.15), right now, in the same time that i plug the AC adapter, the LCD Backlight turns on, but with the laptop OFF only plugged, then turn on the laptop and works, until i will turn off the laptop again i assume.
+
UPDATE: Today (22.01.15), right now, in the same time that i plug the AC adapter, the LCD Backlight turns on (With the purchased LED Driver, then, i can say that works), but with the laptop OFF, only plugged, then turn on the laptop and works, until i will turn off the laptop again i assume.
LCD Backlight fail but come back sometimes. Diagnostic?
文本:
Hello,
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to unplug the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
Is this a suggestion of what can fail?
I don't know if i have a screen problem, Logic board problem or LED Driver purchased problem.
Additonal information: the screen since time ago (when works) shows some dark vertical columns. Like this:
UPDATE: Today (22.01.15), right now, in the same time that i plug the AC adapter, the LCD Backlight turns on, but with the laptop OFF only plugged, then turn on the laptop and works, until i will turn off the laptop again i assume.
LCD Backlight fail but come back sometimes. Diagnostic?
文本:
Hello,
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to unplug the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
Is this a suggestion of what can fail?
I don't know if i have a screen problem, Logic board problem or LED Driver purchased problem.
Additonal information: the screen since time ago (when works) shows some dark vertical columns. Like this:
http://blog.mclaughlinsoftware.com/wp-content/uploads/2011/11/MacBookProDisfiguredView.jpg
Thanks for your attention.
Regards.
LCD Backlight fail but come back sometimes. Diagnostic?
文本:
Hello,
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to unplug the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
Is this a suggestion of what can fail?
I don't know if i have a screen problem, Logic board problem or LED Driver purchased problem.
Additonal information: the screen since time ago (when works) shows some dark vertical columns. Like this:
LCD Backlight fail but come back sometimes. Diagnostic?
文本:
Hello,
-
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to disconnect the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
+
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to unplug the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
Is this a suggestion of what can fail?
I don't know if i have a screen problem, Logic board problem or LED Driver purchased problem.
-
Additonal information: the screen since time ago (when works) shows some dark vertical columns.
+
Additonal information: the screen since time ago (when works) shows some dark vertical columns. Like this:
LCD Backlight fail but come back sometimes. Diagnostic?
文本:
Hello,
The backlight of my A1226 Laptop no works, i can see the image in the screen but without light, works fine with external monitor. I purchase a new LED Driver but don't fix the problem. After a few weeks with this issue the backlight come back but until i shut down the laptop, then, next time backlight no works again. In second time, after maybe two weeks the backlight come back again, this time i try to disconnect the LED Driver without shut down the laptop for connect the new LED Driver that i purchased for testing, when i unplug the Logic Board wire from the LED Driver with the Laptop on, the backlight no works again, i connect the new LED Driver (and the old original) but backlight no works anymore.
Is this a suggestion of what can fail?
I don't know if i have a screen problem, Logic board problem or LED Driver purchased problem.
Additonal information: the screen since time ago (when works) shows some dark vertical columns.
Thanks for your attention.
Regards.