Sonic Core A16 problem

[Joey]

I have a Sonic Core A16 (the one with an AC power supply)
Sometimes it doesn't start up. Sometimes it turns off.
When I keep the power button pressed, it functions.
Usually after a while I can get it to work, mostly by keeping the power button pressed for a while.

My question: is this a faulty power supply? Or would you guys think there is another problem?
Maybe the power button?

[garyb]

i would think it's the switch...

[Joey]

yes, that is the most probable cause.
it's a bit annoying though, in the middle of a session

[Bud Weiser]

yes, that is the most probable cause.
it's a bit annoying though, in the middle of a session

Did you open the A16U case ?
Is it difficult to replace and do you urgently need the original switch as a replacement ?



Bud

[astroman]

You could as well bridge the switch and instead switch the external PSU (or just plug it in/out for some time)...

[Joey]

I don't much feel like taking it out of the rack for now. So we'll see how it behaves for now. I have considered bridging it, and that's probably what I am going to do at some point. But for now I don't know what switch is used.

[astroman]

The switch from my A16:

75A8D0C9-33E9-42BB-8183-3377107CC5B9.jpeg (389.7 KiB) Viewed 2440 times

Size is 22.6mm x 6.6mm with a kind of integrated plastic spring to keep it in position.
Anything with less than 23mm height and 6.5mm width will fit through the front panel slot.
It‘s a regular light bulb switch, nothing particular.

[garyb]

the ultra has a different switch.

[astroman]

oops, I read a A16 with AC PSU... and thought of the blue one, but re-thinking it... the A16U is also fed by AC

[Joey]

Yeah, that's definitely a different switch. it's a push-in switch (there's probably a technical term for that)