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A2141 and replacing mux chip
- Thread starter adrko
- Start date
Why did you change GMUX?
Any history available.
If liquid damage on video connector, that must be solved first.
BTW, isn't this machine syill in warranty?
Did you check Apple change screen program availability?
Any history available.
If liquid damage on video connector, that must be solved first.
BTW, isn't this machine syill in warranty?
Did you check Apple change screen program availability?
Last edited:
Hello, sorry for not providing context.
It’s a liquid damaged MacBook.
backlight shorted to mux, mux was blown and was shorting one of the power lines supplying it.
Replaced it and the machine is working. It’s a laptop I bought in November, as a repair project.
There were quite a few problems with it.
I struggled with it but I replaced the connector and the receptacle on the logic board.
There was also corrosion on the tcon board, replaced that but I didn’t know if new tcon was working, it arrived from eBay not secured properly and slightly bent. I’m currently thinking about buying whole new lcd assembly and replacing that.
So there’s my question to be sure that I’m doing the right thing at the moment
I also replaced components around touchbar connector and touchbar connector itself.
It’s a liquid damaged MacBook.
backlight shorted to mux, mux was blown and was shorting one of the power lines supplying it.
Replaced it and the machine is working. It’s a laptop I bought in November, as a repair project.
There were quite a few problems with it.
I struggled with it but I replaced the connector and the receptacle on the logic board.
There was also corrosion on the tcon board, replaced that but I didn’t know if new tcon was working, it arrived from eBay not secured properly and slightly bent. I’m currently thinking about buying whole new lcd assembly and replacing that.
So there’s my question to be sure that I’m doing the right thing at the moment
I also replaced components around touchbar connector and touchbar connector itself.
You should test with known good LCD assembly.
I agree, I was just wondering if there’s a possibility of mux chip not working but still having image on external.
I went through the schematics but I wasn’t able to understand if the mux chip is also responsible for providing image to external.
Just trying to make sure that if I spend 600-800$ on a new screen it will work
I went through the schematics but I wasn’t able to understand if the mux chip is also responsible for providing image to external.
Just trying to make sure that if I spend 600-800$ on a new screen it will work
Analog GMUX is only used for internal LCD.
An o-scope can help.
You can also check some signals on it.
Dificil to say something more explicit, as you didn't post your board model until now.
You can also check some signals on it.
Dificil to say something more explicit, as you didn't post your board model until now.
You need to discard the LCD assembly.
Put it apart and wait untill get similat machine, with compatible screen.
Put it apart and wait untill get similat machine, with compatible screen.
Be aware about new LCD assemblies from Aliexpress; too many bulshits.