Piano won’t power on

Colbybrown91 · September 14, 2024, 9:57pm

I have a YAMAHA - E363 keyboard.
I already know I blew something. I believe I used the wrong wattage power source and I had the good ol (pop) noise - and then the keyboard just faded away on me. I tried batteries to see if it would bypass but like I figured, it didn’t. So what exactly pops? And where is it located? Is it a fuse? Can I buy a new one to pop in there and wa la?? It will work? I have the piano opened up, I’m looking around the power source plug in site and I don’t understand which is a fuse? Sorry and thanks for any help! I can’t find anything for answers anywhere else.

Colbybrown91 · September 14, 2024, 9:58pm

Colbybrown91 · September 14, 2024, 9:59pm

Is it the tall cylinder on the right??

midnightvisions · September 20, 2024, 8:11am

the operators manual doesn’t mention fuses, only that its a 12V ac adapter, and if you plug in something else will damage the motherboard.

Sorry but you need to take it to a tech in your area.

Austinkeyboards · October 4, 2024, 1:36pm

Check the DC jack for continuity. The will break away from the traces at times but look good and they are not. I have repaired the traces and eyelets on DC jack boards before and that might be all yours needs. Good Luck!

wernersaurus · October 4, 2024, 10:38pm

Few things here:

Wattage of a power supply has no impact on operation of the equipment unless the wattage a power supply can deliver is substantially lower than the equipment requires in which case it will simply not work as the power supply voltage is “collapsing”.
The PSR-E363 only takes DC on the input but even if an AC adapter is connected it still may work because the unit has a polarity protection diode (D103) in series with the input which does operate like a rectifier and in due course can deliver the required DC voltage for the unit to work.
If the DC adapter connected has the wrong polarity the unit simply will not work due to the afore mentioned polarity protection diode (D103).
If however a DC adapter is connected with a way too high DC voltage the power on/off control circuitry may break causing a short circuit and blow the on-board fuse (FZ101). In any event - if the on-board fuse (FZ101) does blow then there is a major problem in the unit’s power supply and will need extensive repair or maybe the power/amp board to be replaced.