20 Most Recent Roland Boss DR 880 Dr Rhythm Drum Machine - Page 5 Questions & Answers

Nothing ? Or inverted ? If inverted, get into the menu. If NOTHING, probably the jack, you gotta open it and check if the solder to the board is good, that can screw up with handling. Luck..

Make sure there is not a switch that makes it output to external speakers.

Go to "YouTube" and type in "Roland FP8 piano repair"

If the PSU is a switch mode type it is clearly faulty but if it is a transformer type checking it open circuit or off-load will usually result in a significantly higher voltage than specified. In order to check the latter type it is necessary to first apply a load approximately equivalent to the device it would be powering if the device was working normally. Sorry I can't answer the rest of your question...

Get the manual from web site and it will tell you how to replace the battery.

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Search the site by type in the "brand name" of your device, in the "Search box at the top right of the Homepage" to get gathered related posts.

You have a ground problem. I suspect your cord. Replace it, being sure you use an instrument cable, and see it that doesn't help.

Mine did that. Found out it was the input jacks

Open up the Roland E-80 and check if all connectors and flatcables are well seated.

Here you are- https://www.sweetwater.com/sweetcare/articles/roland-e-09-initializing-restoring-factory-settings

Sorry but not at this site. Try a local music store.

I suggest you contact /Roland directly. Here is the link- Roland Company Contact Us Contact Us