Help with correct AC adapter!

[lRaziel1]

Hello everybody.

I bought a used keyboard (Yamaha PSR-E303), however it came with an aftermarket AC dapter, not the original one.

Its this one:






The keyboard does not specify AC adapter specs, but it says this above the plug:







However they do specify to use ONLY one of these adaptors they recommend in their manual (PA-3C / PA-3B) for use with this keyboard:




This said, it comes the real question.

Do i really have to change it?
Rhe adapter itself where i live costs half of what i paid for this keyboard. If i could afford an adapter that expensive, i wouldnt even be asking this, but of course it would be ideal to change it.

This one i'm currently using doesnt overheat, works fine and i have no problems whatsoever with any of the functions of the keyboard, even volume. Maybe i hear a little bit of "noise" or interference when using headphones, but thats about it.

Could i permanently damage my keyboard by using this one? I'd rather buy AA batteries and use it that way until iu can pay for the adapter, if you guys confirm it can happen.

Thanks a lot everybody.


PS. If its of anyhelp, my country (Mexico) uses 127v @ 60Hz.

 

[Timbo]

Hello and welcome to the forum.
The adapter you have is only a 9 volt output instead of 12 volt. It may go through a regulator on the pcb in the keyboard to adjust the input voltage, many of these types of equipment have this arrangement.
Personally, I would check the actual voltage out of the adapter as they are quite often higher than stated.
I don't think you will damage it with this adapter.
See what other members think.

 

[DPG]

Your power supply is also slightly less powerful - 600mA rather than 700mA. But to be honest I'm with Timbo above - as long as it isn't getting hot then I can't see a problem. Make sure it doesn't overheat when left on for long periods (several hours) also - just in case it ever gets left switched on by mistake.