Backlight on boss dr 880 failed

YOu can disassemble the machine and clean the switch and resolver the connections to the circuit board, but it would be easier to call Roland and get the info for the nearest service center in your area.

Contact Roland Customer service for a repair center.

you should contact Roland for a service center.

take it appart. there is a conductive rubber between lcd pannel and the pcb use widow washer fluid without amonia to clean it

The DR-550 MkII is the upgraded version of the venerable, original DR-550. ... Also, as in other drum machines in the DR-series, you can chain patterns to forms songs - In the DR-550 MkII, up to 8 songs ... Boss DR-550 Mk II manual. Available ... www.synthmania.com/dr-550mkii.htm
Just checked this site. I am sure this manual is the one you want

Google is your friend... it found:

http://www.bosscorp.co.jp/products/en/_support/om.cfm?ln=en&dsp=0&iStcd=4&iCncd=50

Download your own.

Here is one link:http://cms.rolandus.com/assets/media/pdf/dr5_turbo.pdf Here is more:http://www.rubiconsystems.com/paul/dr5faq.htm

Purchase? No way!

Go here and download and print your own!!!

http://backstage.rolandus.com/product_manuals/?group=2

Midi doesn't actually "make sound". If your trying to record the patterns you made on the DR-5 to the recorder you need to use an audio output(I don't remember if they are RCA or 1/4" on the DR-5.) The midi output would be used to"trigger sounds" in another device that has sounds built in, or you could also trigger sounds in a program that supports midi input.