Neil ZL3ADC: Thank you.? I'll do the fan modification once the rig is working again.
To All:
Regarding the pre-driver device Q102, RD01MUS1.? ?This device seems to be most sensitive to tweaks of the PCB, but I have been unable to positively isolate the fault to Q102 with it still being soldered to the PCB.?
It would be helpful to know whether the device's Source connection is internally bonded to the Tab connection.? ?Both get soldered to ground on the PA Unit board.? ? I have found a data sheet at:
But it is not clear to me how to use the data sheet to ascertain whether the Source is internally connected to the Tab.? ?I would appreciate some help on this point.? Of course, if you have a RD01MUS1 on hand, I'd appreciate your observations with a test meter!
73
Steve G4ALG
Steve G4ALG