Found the kids old electronic dartboard in the loft

[paul.deitch]

But not the power supply! There are no voltage markings on the case. Anyone have an identical one ? If so please tell tell me what I need. I've got about 20 different blocks in a box, most of them anonymous.




Thanks.

[shtu]

No markings at all? Something like this will do it, start low and work up,

https://www.ebay.co.uk/itm/Universal-UK-Power-Supp...

[paul.deitch]

Too risky as you don't know the polarity. Could burn it out if there isn't a protection diode.