Hans,
?
Is it possible to load QDX firmware into the QMX+?
James has a QMX+ for which the 78M33 is not seeing +12V
at power up, I am thinking he may have loaded firmware that
drops LIN_REG_EN without starting the 3.3v SMPS.
?
As a fix, I am thinking he might short Q102's gate to ground,
so the 78M33 is running in parallel with the 3.3v SMPS.
That way he can try loading firmware again.
?
Jerry, KE7ER