-
4
- #1
This is a follow-up to this thread (thread798-1656401):
It seems failure of the LCD's on Avaya's M-series phones are quite common. Typically the LCD has missing lines or pixels and sometimes fade in contrast.
It seems the fault lies with the LCD's ribbon cable partially breaking contact with the PCB over time.
I've read on various forums of people having various levels of success reheating the ribbon contact with either a soldering iron or a hot air gun. I didn't try this.
However, completely by chance, I left my broken M3902 exposed to indirect morning sunlight through my office window and the LCD fixed itself! It has gone through this sun-heating cycle a number of days and seems to get better and better each day, to the point that today all lines are back and staying back - even after cooling down.
Disclaimer:
* Use fix at own risk *
* I'm not sure how long this fix will last, but its worth a try *
* Be careful not to over-expose and heat the LCD, as this may turn any LCD permanently black *
It seems failure of the LCD's on Avaya's M-series phones are quite common. Typically the LCD has missing lines or pixels and sometimes fade in contrast.
It seems the fault lies with the LCD's ribbon cable partially breaking contact with the PCB over time.
I've read on various forums of people having various levels of success reheating the ribbon contact with either a soldering iron or a hot air gun. I didn't try this.
However, completely by chance, I left my broken M3902 exposed to indirect morning sunlight through my office window and the LCD fixed itself! It has gone through this sun-heating cycle a number of days and seems to get better and better each day, to the point that today all lines are back and staying back - even after cooling down.
Disclaimer:
* Use fix at own risk *
* I'm not sure how long this fix will last, but its worth a try *
* Be careful not to over-expose and heat the LCD, as this may turn any LCD permanently black *