I have an Olive NAP 250 and someone has pushed in the on/off switch way too far. The NAP250 is not lighting up and if I press the switch is does not jump back out.
Any suggestions on how to fix it.
Thanks
You’ll prob have to take the sleeve off and try and sort from the inside..
Before doing that, give it a good sharp jab with your finger. It can’t make things worse but may just release it.
I tried a short jab with my finger but there is no movement at all in the button. I tried to prise it out with a thin blade but I did not try very hard in case I damaged it.
I wonder are replacement switches still available?
I will wait for a few more suggestions before I try to open the case. I am not sure why the amp is not switched on (it’s not lit up and no sound from the speakers – not even hiss)
With the 250 switched off, protect the interior by wrapping a cloth around the switch, then spray a light lubricant (WD-40 with a straw) onto the plastic shaft. Move the shaft back and forth several times to allow the lubricant to take effect; this should unjam and free the switch. The spring is light; if there is significant friction, it will no longer respond. If the push-button no longer triggers the ignition, the fuse may have blown due to the mechanical blockage of the push-button.
When was it serviced last? Might be worth sending off to Darren or naim and get a new switch and service,
Well, just open it up and see what’s going on?
@Bonang
I’ve had switch issues with 135s and 500 ps
Open the box carefully. When you slide the chassis out be very wary of damaging the front fascia of the 250.
Then you will see a spring encasing the switch mechanism.
This spring can get stuck- gently take a small screwdriver or even an opened up paper clip. Try to get the spring sort of pop back in place. This will likely fix it. A small amount of lubricant applied to the mechanism may be beneficial to prevent this problem from recurring. Somewhere in the forum is a pic of the switch. Worked for me every time.
It is not that difficult just take your time
Once fixed consider cleaning the switch on outside - your switch appears somewhat dirty or just dusty.
Hope this helps.
If you have a local dealer close by that would be best option.
I have no local dealer so I was coached by Chris West of AV Options on how this is done
David
Addendum: one thing that concerns me is that your 250 is not “on” despite button pressed in to the max. 
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This is what the olive supercap power button looks like.
I assume it should be the same on the NAP 250.
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These are the same switches. As I’ve already explained, you need to insulate the area around the button, particularly where it’s near the transformer, and apply a thin coat of lubricant to the piston above the spring, which can be seen in the photo. And replace the blown fuse.
Thanks everybody for all the help. I will see about opening up the amplifier and trying to fix things. I will probably wait a day or two since I am quite busy over the next few days.
Assuming I have everything disconnected from the amplifier (no preamp input and no speaker cables) it it safe to apply power and switch it on in such circumstances or must it always be connected to speakers?
Be fine with no speakers connected
I have opened up the box and this is what I see. The fuse is actually working (I tested it with a meter) but the switch seems to be totally out of alignment.
Thed switch seems to be working but a bit of the plastic on the shaft seems to have broken off and push button is not connecting to the switch. I am going to bring it back to my dealer.
Yeah. The switch needs to sit between the two circular plates on the part where the mains comes in, so it looks like it’s been bodged after a piece snapped off
The first time I see this kind of arrangement of a switch..