Hi, sometimes the button does not latch properly when pushed. Try a firm push in and then release immediately, do not push and hold.
Remember that this should be the first box that you turn on, followed by the preamp them power amp. So keep the rest of the system turned off when trying to turn on the source.
Unplug from the mains then try pushing the button in and out a number of times as far in as you can (the eraser end of a pencil can be a help here). As Chris says above, you need a firm stab and release. Hopefully it will then re-engage the latch and you can then connect up and power up again normally.
Thank you for your posts.
I have pushed and released the button hundred of times
as you kindly suggested and suddenly it latched ‘on’ position
at one time. So my NDS gets power Now I dare not turn the PS off.
What should I do if it happens again ? Shoul I send the box to be
repaired ?
These is no particular need to turn it off, unless you are going away or swapping things around in your setup. You could turn it off at the socket, but it’s not ideal. You may find that getting it to latch fixes the problem for good, but if it doesn’t you may need to have the switch replaced.