I have not had any issues with D2 cluster so don't know details as well but in my experience with other models LCD is either soldered or bonded directly to PCB or ribbon cable is bonded to LCD and other end soldered to PCB so swapping PCB would be at least as complicated as swapping EEPROM on PCB's.
In addition to this it's not always LCD that is faulty, it could be connection cable or dry solder joints for controller chip or the chip itself. Considering that issue is heat related I would be leaning more towards controller chip dry solder joints which would mean using old PCB would retain the issue. Basically solder joints under the chip has cracked and while cold still pressed together and making connection but as it heats up and different materials expand at different rates cracks open up and loose connection.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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