Using different power block?

flogen · 16-10-2023 4:45pm #1

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 · 16-10-2023 4:58pm

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 · 16-10-2023 5:38pm

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

Antenna · 16-10-2023 5:39pm

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 · 16-10-2023 5:49pm

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 · 16-10-2023 5:51pm

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

Don't use.

flogen · 16-10-2023 5:56pm

Cheers!

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

flogen · 16-10-2023 7:55pm

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 · 16-10-2023 8:21pm

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 · 16-10-2023 8:56pm

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 · 16-10-2023 9:58pm

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

10-10-20 · 16-10-2023 10:08pm

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.

Using different power block?

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