Hallo to everyone. Excuse my bad English.
I risolve the bad MG problem just changinhìg all the motherboard connectors. and the strage transistor with 4 pin .
The tester do not recognise defective contact from motherborads connectors to the MG wheels, and panel potentiometers.
I make the mistake not to change with new one the old connectors !!!!! .
Best regards to all.