Using different power block?

flogen

I’ve misplaced the power cable for a digital piano (it has a circular connection on the device end and a block plug on the other).

I’ve found another plug that fits it, but before I actually try I wanted to see what needs to match in terms of power in to in order to avoid doing damage.

Both are 12V output - but should other things like the mA, wattage etc match too…

I’m probably better off just getting a replacement but also sure I’ll find the original the minute I do that!

Apiarist

The power adapter needs to have the same polarity (+/-) as the original, and be able to supply at least as much current. Do you have pictures of the power input of your piano and of the power adapter?

flogen

This is the what the internet tells me is the power block for it

Antenna

What is on the power supply plug your found?

The 'plug' you found could well be 12V AC , which you cannot use, (if it was for 12V lights) or DC, so post what is on that also ...

If polarity (+/-) is wrong way round it could cause damage,,,,

flogen

This is one of the two I found (don’t have a picture of the other).

If says 15.3V on the sticker but as you can see it says 12v at the bottom and has a label on the wire with 12v on it too… not sure why that’s the case!

Or if it’s incompatible for other reasons…

MrMusician18

The Black and decker doesn't deliver enough current and is the wrong voltage.

Don't use.

flogen

Cheers!

I’ll try to find the other one and see if I’ve any better luck

flogen

This is the other one that fits… if I’m reading it right I don’t think it’s a go-er either but good to know for sure

Apiarist

https://www.boards.ie/discussion/comment/121247424#Comment_121247424

This one should be ok. The polarity is fine, and it is 12V x 3A, which is more powerful than the original, so that's fine.

10-10-20

https://www.boards.ie/discussion/comment/121247535#Comment_121247535

Agreed, will be fine on the Yamaha piano. I've a p-115 here with the same power supply.

flogen

Ah great… it having more power doesn’t mean there’s a risk of it burning something out, does it?!

10-10-20

https://www.boards.ie/discussion/comment/121247963#Comment_121247963

No, not really, only of there is a fault in the product. Its not a concern as it should be fused internally and Yamaha are a reliable brand.