开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: QMX Question for Troubleshooting


 

Thanks, Adam.
No, "+12V" (needs a new label) is not present, at least as far as can be determined with measurements on the main PCB.
A connection problem in the PCB #1 connector could explain this.? That's why I want to get to the board with the power on
and the power supply activated via PWR_ON.?
?
The "+12V" is in the lower row of pins on the PCB #1 connector, inaccessible with the board plugged in, but I can get to the
drains of Q103 and Q103 by probing the top side of the board.? That's where I'm headed.
?
Don WB0LQW

Join [email protected] to automatically receive all group messages.