Thanks to all of the shared information.
My Linn Numerik DAC shown the same sympton last week,
After push the 'power on' button, the pilot lamp lights up about 2 seconds, and faid out.
I opened up the Brilliant SMPS, 2 Nichicon Capacitors starts to leak, I replaced the 47uF and 100uF on the triggering rails. But the SMPS still cannot start to work.
I noted the output of -24V rail is always measured at 0V; while the other two output voltage +24V and +10V are up in the very begining and fall down to 0V gradually.
I measure the surface mounted 10uF/35V titian capacitor (yellow) filters the -24V DC, it is shorted; that is the reason SMPS goes into protection mode.
I removed all 3 pieces of 10uF/35V capacitors (other two might go faulty soon), and the SMPS gets up and running fine.