820-2838-A System clock problem

VirtualLife

New member
When i turn off my 820-2838-A MacBook Air and then turn it on after hours the system clock is reseted to 2001.
 

dukefawks

Administrator
Even with the charger plugged in?
Check R1920/21 and possible corrosion under MCP on the side of RTC Xtal.
 

VirtualLife

New member
I don't remember if it does it with charger but i will check if it does it with charger and also that. Thanks duke for answering but if you could help me with the retina screen. What would be the best way to rub off the coating?
 
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