The "record button" on my DR-670 no longer works, it has benn sitting for quite a while . It has been well protected in it's original packaging. Any help would be appreciated

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 have a memory problem. If you are using a flash card for memory or a CD drive or perhaps you have configured an external drive, you need to free up some space. Try deleting tracks or songs you don't need anymore.

Each song is independent on a CompactFlash
without affecting other songs. You can give a desired song name for managing recorded songs
(see pages 23 and 91).
Recorded track data is stored in a song as mono WAV files.
The MR-8mkII can convert the two WAV files recorded on tracks 7 and 8 (L and R) to a stereo
WAV file (see page 115).
You can export the converted stereo WAV file to your USB-connected personal computer, and
use the file by a music software application or make an original audio CD on the computer using
a CD burn software application. You can also burn an audio CD by using an external CD-R/RW
drive connected via the [USB HOST] port of the MR-8mkII (see page 115 and 123)
Fostex MR 8MKII Owner Manual Page 73 Fostex MR 8MKII Owner Manual Exporting Data To Personal Computer...

Are you using the auto delete feature? Get rid of data you don't need here: http://www.manualslib.com/manual/53326/Fostex-Mr-8mkii.html?page=135#manual

If this is a traditional keyboard (not laptop) or extremely fancy keyboard.

Try unplugging the keyboard. Then.

1. Take a butter knife and slide it into the crevice next to the "enter key".
2. Apply a small amount of pressure to pry the key upward.
3. With little effort the key should pop off or slide off.
4. Check the spot the key was for dirt, dust, food, etc. Clean it if you must. Make sure the actual key does not have anything stuck to the bottom of it.
5. Push the key back onto it's place on the keyboard.
6. Plug back in and see if that worked.

If this did not work, you may need to replace the keyboard OR you may want to make sure no viruses are playing an aweful trick on you.

Hello, that seems to be a bad contact on the enter button, the solution is to take a part the key and clean it, otherwise you need to replace the under key switch.
Thanks

Most of the problems with these type units are due to dead batteries or incorrect power adapters and broken power jacks, Check for those things use ONLY the original type power adapter.

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

Please try to power reset the unit. Pull out all power cables and wait about 20min.
Best of Luck

Check for corrosion on battery contacts. If this unit can use an AC adapter, often the switch contact in the power plug that connects the batteries when adapter is removed gets bent and fails to connect the batteries.

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.