My volume is very low on my roland cube 15 amp

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

lucky you that wants to get burnt
disabling a safety feature is NOT the way to go but fixing the fault that wants you to do so is the way to go

Google it and find the Service Manual, then get a Tech.

There is probably both a global volume and individual program violume as well. One or both may have reset to a lower level and need to be turned up. It's also possible that the general output has a setting for line level or instrument level, which may be software controlled. Take a look through your manual to find these settings and adjust to suit.If all else fails, contact Roland Customer Service at this link for help.
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Could be just a bad soldering joint, especially if it does so when touched or moved.

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.

Do some tests: Plug a set of headphones into the line outs and tell us which ones if any have sound. Note that only one side of the headphones may have sound and it may be low volume. We need to know if anything is coming fromt he preamp. Makesure the output switch is set to one of the speaker on positions and not just phones.

something could possibly be giving it feetback or it could be Faulty i would check with the store you bought it from

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"