[Yaesu] Help re ps problem with FT-980

[Fern]

I have a friends FT-980 transceiver here that has an issue with the 24 volt power supply. It's putting out 42 volts and can't adjust the voltage. Q1 main pass transistor was shorted out and did replace same. Unfortunately there isn't any voltage references marked on the schematic. Would appreciate corresponding with anyone who has serviced same model or someone who has the reference voltages.
Best of 73 from Fern   VE7GZ