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Have Roland cube amp that power up but nothing else works..just stopped.is there a fuse and how to change

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  • 216 Answers

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

Posted on Dec 14, 2017

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PolyrhythmFX
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SOURCE: Roland JC-55 amp stopped working

Sounds like a transformer problem or something else in the power section..maybe even a transistor....since the LED status light would be direct from DC power. Take it to a trusted audio electronic tech and get it looked at. Keep in mind that these amps are about $150-$200 used on Ebay so don't spend too much getting it fixed if it is indeed a transformer. I'd definatley get it looked at. I have a JC-77 and it rocks for clean!

Posted on Jun 20, 2009

rabbitbrains
  • 575 Answers

SOURCE: hello my roland street cube

That is the first thing to check. They are most likely inside the circuit board. Remember to replace them with the same voltage and amperage ratings.

Posted on Apr 30, 2011

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SOURCE: roland micro cube fuse replacement

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.

Posted on Jul 14, 2011

  • 10 Answers

SOURCE: Amplifier not working

It is more likely that your input jack component is broken or damage you would have to take it apart because your circuit board may need a look at to check for damage and you will need a new input jack

Posted on Aug 11, 2011

  • 10 Answers

SOURCE: My Roland Cube 20x Amp

If you take your speaker out you can see if it has blown the internal fuse if not it could be the exernal fuse the power adaptor

Posted on Aug 12, 2011

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2 Answers

Roland street cube won't power on due to battery acid leak


Most likely the acid ate the internal power supply, but if you can dis-assemble it and clean any trace of gunk with a toothbrush and electronic cleaner, including the fuse and it's contacts, maybe you'll get lucky.

Nov 07, 2014 | Roland CUBE Street Amp Combo

1 Answer

My Roland Street cube amplifier has a bad speaker- where can I find a replacement speaker?


Rubber cement is an excellent for minor speaker cone damage but if you feel that a replacement is required, try MCM Electronics online. They carry lots-o-speaker replacements. Be sure to match wattage and impedance (ohms) of the speaker though as these are important spec's.

May 21, 2014 | Roland Cube-st Battery Powered Amp Cube...

1 Answer

Roland cube street water damage repair


What part of it got wet will determine the course of action.

If the whole unit were submerged, the unit may prove more time consuming to try to fix than to locate a used one. However, I have salvaged imersed laptops before. the procedure is not much different- make sure the unit is as dry as you can possibly make by blowing a fan on it for an extended period of time.- Days.

Once dried, use some contact cleaner on the jack contacts and interupts, any manual control and any switch.

You can then apply power. If nothing lights up, check and replace fuses as needed. Also check the power supply board for failed caps or rectifiers.

Once the power supply is known to be functional, systematically check the LCD display and the aspects of the amp that it controls. This board will be the most vulnerable and most likely to be the source of most issues you will encountr.

If the display survived intact, and amp does nto work, apply a signal to the inputs and trace the signal through the amp with a set of headphones set up with test prods. The problem will be where the signal stops.

Apr 26, 2012 | Roland CUBE Street Amp Combo

1 Answer

Roland Micro Cube Amp fuse blew out. How do you fix it?


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.

Jan 11, 2012 | Roland Micro Cube Battery Powered Amp...

1 Answer

Roland micro cube fuse replacement


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.

Jul 14, 2011 | Roland Microcube Guitar Amplifier

1 Answer

Roland micro cube dosnt power up


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

Apr 01, 2011 | Roland Microcube Guitar Amplifier

2 Answers

Hello my roland street cube won't power on, either with dc or batteries....adapter working .could a fuse be blown inside circuitboard? thanks


That is the first thing to check. They are most likely inside the circuit board. Remember to replace them with the same voltage and amperage ratings.

Feb 13, 2011 | Roland Cube-st Battery Powered Amp Cube...

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