Dropped my Roland micro cube GX and it won't power up at all what could be the problem

1. Check the power cable and ensure it is securely connected to both the amp and the power outlet. 2. Check the fuse and replace it if needed. 3. Check the power switch and ensure it is in the correct position. 4. Check the battery (if applicable) and replace it if needed. 5. If the amp is still not turning on, contact Roland customer service for further assistance.

Your Roland microcube AC is waste up

Unfortunatly the impact from a fall can lead to numerous problems ranging from a broken fuse to a disloged power supply to a cracked board. I'd suggest taking it into your nearest Roland authourized service center to get it checked out. If you're not trained in electronics you can do more harm than good poking around inside the amp. https://www.roland.com/us/support/service_repair/service_centers

Yes, there are adapters available.

Gain too high with single coil pick ups?

have a look here:
http://www.ehow.com/how_8698510_fix-roland-cube.html

although it doesn't mention the fuse you will probably find it. Sometimes there is a fuse access on the outer case.

If the fuse blew, it is for a reason requiring repair. Troubleshoot and use a 40 watt lamp in series to limit current until cause of fuse blowing is found and repaired.

Check the fuses. There is probably one on the outside of the amp and some inside the circuit board.

Thee internal fuse should have protected it.

Here is schematic:

http://elektrotanya.com/roland_cube-20_combo_sch.gif/download.html

Scroll down on page and click on "Get Manual"

HI,

I've just had a Roland Micro Cube amplifier in for repair and it uses the same type of Alps switch you mention. ( It's also broken )

This is a simple single-pole latching push-button switch, so electrically, almost anything rated for an amp will be good enough.

Alps no longer make the same part, so you'll need to find something which looks the same and fits the original hole.

My repair is easier, because the replacement part doesn't have to match anything.

Graham.