Korg Forums

[MakeBeep]

Hello,
I inherited a DW6000 and I am working to bring it back to life.
It turns on and when it does, it emits a decaying frequency sweep (high freq decays to low freq -- sounds similar to the THX sound).
Pressing the keys, however, emits no sound.
When I enable write using the switch on the back, the system is OK (front panel LEDs remain lit saying "11,11,16". When I also enable tape using the switch on the back panel, all of the LEDs on the DW6000 turn off -- the manual says it should display LOAD (after I press the load button).
So while I do have the audio to load the factory presets, this "shutting off when tape is enabled" behavior makes it not possible to load presets from tape.
I also have MIDI-OX and I downloaded the sysex patches from http://www.sysexdb.com/synth_detail.asp?dv=69 (file id 1720.syx). I have connected PC->Mackie Onyx400->Midi cable->DW6000 Midi In. Set the DW6000 to be channel 1, accept all input types. I then load and send the SYSEX file using Midi-OX but still no change in the system behavior.
I have just installed a new battery in the unit (a day ago) so I know that the battery is good.
I feel like I am very close to getting this thing running, I just need it to stay alive so I can either load from tape or load over MIDI sysex.
If anyone knows about this TXH sweeping sound behavior and what it indicates (is the synth DOA and I should give up?) please let me know. I would really like to bring this back to life. Perhaps you know how to tell MIDI-OX which midi channel to use? The Mackie Onyx software does show MIDI data going OUT when midi-ox is sending so I think that's going OK.
Thank you in advance for your suggestions!
-Jonathan

[MakeBeep]

Ok. Update on the system's status:

The DW-6000 is old and the battery was dead. I replaced the battery and when I powered up the system I get the decaying frequency sweep like the THX intro sound.
So I pulled the MIDI sysex off of the server [http://www.sysexdb.com/synth_detail.asp?dv=69 grab file number 1720.syx].
Using MIDI-OX and two cables (you must have MIDI-in >>AND<< MIDI-out cables running between the DW-6000 and the device you are using on the PC end) I was able to test the following items:
The keys on the DW6000 transmit midi note on and off -- tested by using my Yamaha MO8 as a slave and can play the MO8 using the piano keys on the DW6000.
Verified by looking at the MIDI-OX GUI and the midi-in lights blink in the GUI when I hit the piano keys.
Manually sent the "Device ID Request" sequence from MIDI-OX sysex GUI to the DW6000 and the DW6000 responded with [F0 42 30 04 F7] which is correct!

Ok. So that's progress. Electrons are flowing in a predictable manner.

Now.. what does the sysex file from sysexdb.com contain?

It is doing 2 things (and repeating them 64 times, once for every patch -- see the DW6000 user's guide page 50 for a diagram):
A) it sends a DATA LOAD block [32 bytes] (DW6000 user's guide page 46, item {d})
B) it sends a WRITE REQUEST block [7 bytes - F0 42 30 04 11 Pgm# F7] (DW6000 user's guide page 45, item {b})

If things are set up properly then each time this set of command is sent the DW-6000 responds with a WRITE COMPLETED block [6 bytes - F0 42 30 04 21 F7] (DW6000 user's guide page 43, item {b})
If the DW6000 instead responds with WRITE ERROR [6 bytes - F0 42 30 04 22 F7] (DW6000 user's guide page 43, item {c}), check to be sure that the write enable switch on the back of the DW-6000 is set to ENABLE and try again.

So I loaded the sysex file from sysexdb.com and sent it to the DW6000 and got receive errors. Write enable is enabled and still getting errors. What's going on?

Errors 1 and 2 in 1720.syx:
The 1720.syx file from sysexdb.com uses 3F instead of F0 (F0 is specified in the user's manual) to start the sysex commands and it terminates the sysex commands with BA rather than F7 (F7 is specified in the user's manual).

So I then replaced all of the 3F bytes with F0 and all of the BA bytes with F7 and tried again. This time the DW6000 program number display marched happily from 11 to 88 while MIDI-OX displayed 64 WRITE COMPLETED messages being returned from the DW6000. This is looking even better.

Now I read the values back from the DW6000 by sending 64 repeats of {program change} {data save request} and letting the DW6000 return the contents of the buffer.

The new contents did not match the modified 1720.syx file contents. Now what?

Error 3 in 1720.syx:
Upon further review, I found that the 26 DW-6000 BIT MAP bytes that are in the 1720.syx file violate the maximum limits for the byte values as shown in the table on page 48 of the DW-6000 user's guide. As an example: byte 1 (portamento time) should range between decimal 0 and decimal 31 (hex 00 to hex 1F) but the very first entry in the 1720.syx file has a portamento time setting of hex 20 which is not allowed. Further looking showed that a significant fraction of the values in the 1720.syx file were larger than the maximum allowed limits. This was very odd because the bytes in the WRITE REQUEST and the preamble to the DATA LOAD commands were correct (aside from the exclusive and EOX bytes) so I was not able to simply do a subtraction or bitwise operation to shift everything into the correct range.

So I instead scaled all of the values in the 1720.syx file so that they range between the allowed minimum and allowed maximum values and sent that new set of data to the DW-6000.

Reading the buffer contents back now shows that the values being sent back match the values that I sent in.

So. I don't know why the 1720.syx file contained not only the wrong exclusive and eox bytes but also contained out of range values for the parameter settings. And I don't know if the coerced values I managed to get shoved into this DW6000 are anything near the actual factory settings. The DW8000 manual has the same exclusive and eox bytes as the DW6000 (and the parameter data payload is 51 bytes for the DW8000 but only 26 bytes for the DW6000). So it's not a DW8000 factory set that got incorrectly labeled. Is it a [other locale]/us character set conversion issue? Perhaps.

So the good news is that a sysex file exists that will successfully load into a DW-6000 patch bank. I am pasting it at the end of this message. Simply copy it and paste it into Midi-ox's sysex command window and select sysex send/receive to download it to the DW6000. I am also going to paste in the text of the sysex commands that will cause the DW6000 to return all of its parameter buffer contents to MIDI-OX. Use these pairs of command sets to set and verify the patch banks.

I am still afflicted with the problem that the system does the THX sweeping sound at power-on and that the DW6000 does not produce any sounds when keys are pressed. But at least it's alive in there (at least the MIDI brain is working) and the data storage is sound. So a bit more work with the DVM and oscilloscope and it should be annoying the neighbors in no time.

I hope this helps someone in the future.

Thanks for reading!
-Jonathan

==================================================
COERCED 1720.syx file with corrected exclusive and eox bytes (2496 bytes):

F0 42 30 04 40 04 09 02 0F 18 06 08 16 09 04 1C 05 1E 03 11 0F 0C 07 12 62 0E 45 00 20 00 08 F7 F0 42 30 04 11 00 F7 F0 42 30 04 40 04 00 1F 08 10 04 17 1E 17 1D 0D 06 00 16 11 1F 1E 0E 13 7F 00 67 00 20 3F 3D F7 F0 42 30 04 11 01 F7 F0 42 30 04 40 04 00 0C 05 08 25 19 01 00 02 0B 1D 17 1A 19 14 1C 05 2A 0C 0E 33 00 00 17 07 F7 F0 42 30 04 11 02 F7 F0 42 30 04 40 04 11 02 05 17 1F 18 01 00 03 08 10 10 0B 0B 04 09 0B 0C 0D 0E 67 02 20 05 08 F7 F0 42 30 04 11 03 F7 F0 42 30 04 40 04 09 1D 06 17 0E 17 04 10 14 0E 06 08 04 08 17 16 0F 00 09 0E 45 00 20 1B 03 F7 F0 42 30 04 11 04 F7 F0 42 30 04 40 04 09 1F 08 00 1A 09 1E 10 0A 02 16 13 01 08 0F 1F 08 14 09 0E 45 02 20 00 08 F7 F0 42 30 04 11 05 F7 F0 42 30 04 40 04 00 05 1B 10 0F 17 05 17 00 04 15 0C 02 1A 15 1F 08 14 37 45 33 00 21 0F 05 F7 F0 42 30 04 11 06 F7 F0 42 30 04 40 04 11 06 1F 08 19 17 05 08 11 1C 0D 1B 04 1B 17 0C 1F 14 35 0E 33 00 20 3B 05 F7 F0 42 30 04 11 07 F7 F0 42 30 04 40 00 00 1F 14 18 0B 10 15 00 01 1C 05 08 03 08 17 1F 1F 3F 0F 0E 00 00 20 39 03 F7 F0 42 30 04 11 08 F7 F0 42 30 04 40 04 00 13 06 18 00 14 17 17 1C 17 10 00 13 00 14 16 00 00 14 0E 67 00 20 24 05 F7 F0 42 30 04 11 09 F7 F0 42 30 04 40 04 00 02 0F 10 25 08 00 10 07 17 08 17 14 1E 08 1F 07 0F 14 0E 67 02 20 00 08 F7 F0 42 30 04 11 0A F7 F0 42 30 04 40 04 09 0C 1C 18 1C 10 01 00 11 14 0F 17 03 19 0F 1F 0D 12 6C 0B 67 01 22 3F 00 F7 F0 42 30 04 11 0B F7 F0 42 30 04 40 00 11 16 00 17 12 17 0B 17 09 1A 12 1B 08 19 02 16 13 15 00 0E 67 00 20 2A 03 F7 F0 42 30 04 11 0C F7 F0 42 30 04 40 04 09 1F 06 00 1D 06 10 17 01 17 10 08 00 00 00 16 00 14 00 0E 67 00 20 09 00 F7 F0 42 30 04 11 0D F7 F0 42 30 04 40 04 05 1E 08 17 00 17 07 17 06 06 0F 00 16 19 08 1F 07 3E 19 0E 1F 03 20 10 0A F7 F0 42 30 04 11 0E F7 F0 42 30 04 40 04 00 00 06 18 10 17 03 11 0B 1C 1E 1A 03 1A 17 0C 08 14 0D 0E 33 00 20 21 07 F7 F0 42 30 04 11 0F F7 F0 42 30 04 40 3B 11 16 10 1F 12 17 1B 16 0D 1B 07 16 07 01 08 1F 1F 29 4E 00 00 00 20 3B 05 F7 F0 42 30 04 11 10 F7 F0 42 30 04 40 21 00 15 08 00 1A 18 0B 18 03 1D 03 15 03 01 00 13 03 10 0B 37 33 00 21 2D 07 F7 F0 42 30 04 11 11 F7 F0 42 30 04 40 04 00 02 1F 10 09 18 04 17 03 15 06 10 1B 19 08 1F 16 2A 04 13 33 00 3F 24 02 F7 F0 42 30 04 11 12 F7 F0 42 30 04 40 04 11 0C 0F 08 33 1A 00 10 09 10 08 17 05 19 04 16 17 00 6B 7F 67 00 00 3F 03 F7 F0 42 30 04 11 13 F7 F0 42 30 04 40 04 00 0C 08 09 13 18 12 02 09 14 04 1C 14 12 0F 1F 17 14 31 43 7F 00 22 08 03 F7 F0 42 30 04 11 14 F7 F0 42 30 04 40 3B 00 16 10 1F 07 0F 0A 17 0B 17 02 08 0F 08 1C 1F 13 15 09 0E 67 00 20 2A 03 F7 F0 42 30 04 11 15 F7 F0 42 30 04 40 04 09 1F 0F 10 27 17 00 17 01 00 10 08 00 1A 00 0C 00 14 10 47 67 00 20 1F 3C F7 F0 42 30 04 11 16 F7 F0 42 30 04 40 04 11 02 08 1F 00 10 0B 07 16 0A 07 1D 07 0B 08 0C 17 29 23 22 00 00 3E 3B 05 F7 F0 42 30 04 11 17 F7 F0 42 30 04 40 04 11 1E 17 09 1E 0E 18 17 14 15 05 0D 04 1F 0F 1F 08 00 3D 45 67 05 20 09 07 F7 F0 42 30 04 11 18 F7 F0 42 30 04 40 3F 00 0C 0F 10 00 14 06 17 03 1D 16 00 00 08 1F 1F 08 14 00 0E 67 00 20 28 00 F7 F0 42 30 04 11 19 F7 F0 42 30 04 40 04 00 09 14 18 2C 18 01 17 01 17 19 0B 0B 1C 08 1F 0F 3E 3B 48 67 03 20 09 07 F7 F0 42 30 04 11 1A F7 F0 42 30 04 40 04 09 1F 00 17 0C 17 08 09 1A 1D 10 1C 01 08 08 1F 08 14 31 47 4F 05 20 04 02 F7 F0 42 30 04 11 1B F7 F0 42 30 04 40 04 11 1D 0F 10 37 18 09 00 11 0B 05 17 04 00 04 08 05 00 62 47 3F 00 20 36 03 F7 F0 42 30 04 11 1C F7 F0 42 30 04 40 04 00 1F 13 00 1E 17 12 17 01 17 00 17 17 00 08 1F 08 14 00 7F 33 00 20 1C 38 F7 F0 42 30 04 11 1D F7 F0 42 30 04 40 3F 11 15 0F 10 09 18 04 17 0B 15 16 08 03 19 17 1F 0E 2A 04 13 33 00 3F 24 02 F7 F0 42 30 04 11 1E F7 F0 42 30 04 40 00 11 16 17 10 1A 1F 01 0B 06 08 18 17 02 1C 08 16 1F 29 04 07 67 00 20 3B 05 F7 F0 42 30 04 11 1F F7 F0 42 30 04 40 04 1A 1F 08 17 11 0A 0D 10 0A 1B 14 08 0C 08 1F 16 08 00 07 0E 67 00 20 05 00 F7 F0 42 30 04 11 20 F7 F0 42 30 04 40 04 11 1E 06 08 0E 17 0D 17 03 1D 05 00 1C 11 08 0C 00 14 19 0E 1F 03 20 17 3C F7 F0 42 30 04 11 21 F7 F0 42 30 04 40 04 00 1F 1F 10 20 17 02 08 1B 0C 0B 03 1F 08 15 1C 15 00 35 47 33 00 20 2A 0A F7 F0 42 30 04 11 22 F7 F0 42 30 04 40 04 1A 0A 07 10 3F 17 05 18 05 0F 1F 0C 05 19 0F 1A 1E 14 0B 0E 79 03 20 08 08 F7 F0 42 30 04 11 23 F7 F0 42 30 04 40 21 1F 0C 08 10 18 18 08 17 02 0B 18 0F 08 19 0F 1F 1F 14 1F 0E 15 00 20 04 07 F7 F0 42 30 04 11 24 F7 F0 42 30 04 40 21 11 1E 14 08 1A 19 12 17 01 1C 04 10 1C 08 17 1F 0B 00 3D 47 33 2A 00 11 05 F7 F0 42 30 04 11 25 F7 F0 42 30 04 40 04 00 19 08 01 17 18 06 17 01 05 1B 13 1B 13 06 06 17 33 0B 0E 67 03 20 19 08 F7 F0 42 30 04 11 26 F7 F0 42 30 04 40 3B 09 16 10 1F 23 1D 00 15 09 1C 1E 1B 0C 10 17 0C 0F 29 48 00 33 00 05 3B 05 F7 F0 42 30 04 11 27 F7 F0 42 30 04 40 00 1A 02 17 0C 0A 10 1B 17 1F 1F 07 0C 05 00 17 0B 16 27 7F 37 33 0A 20 3F 00 F7 F0 42 30 04 11 28 F7 F0 42 30 04 40 04 00 1A 05 17 00 00 17 17 06 0D 0D 14 1D 00 00 16 10 14 0F 0E 12 2A 20 24 05 F7 F0 42 30 04 11 29 F7 F0 42 30 04 40 04 11 1F 1F 10 20 17 02 17 03 1C 14 13 08 11 15 1C 15 2A 60 47 33 00 00 2A 03 F7 F0 42 30 04 11 2A F7 F0 42 30 04 40 04 09 0C 1F 17 2B 17 08 00 04 04 18 04 08 19 04 1A 05 2A 0B 0E 33 00 20 09 03 F7 F0 42 30 04 11 2B F7 F0 42 30 04 40 04 00 07 08 18 2C 17 08 08 1C 1E 05 1D 13 11 17 03 0F 00 0C 0E 67 01 20 08 08 F7 F0 42 30 04 11 2C F7 F0 42 30 04 40 04 00 1F 00 17 0A 17 0C 11 03 0B 15 04 12 00 1F 1E 07 00 09 37 33 01 20 00 05 F7 F0 42 30 04 11 2D F7 F0 42 30 04 40 04 00 1F 08 17 23 17 08 17 01 10 10 1F 1C 19 17 1F 08 14 56 0E 67 00 20 08 05 F7 F0 42 30 04 11 2E F7 F0 42 30 04 40 04 1A 1F 08 17 2B 16 13 08 09 08 03 17 05 19 05 01 0E 08 21 0E 00 19 20 08 07 F7 F0 42 30 04 11 2F F7 F0 42 30 04 40 00 00 16 00 17 0B 0F 09 1D 14 1B 08 1F 1E 0B 17 1F 0F 29 1D 37 67 00 32 3B 05 F7 F0 42 30 04 11 30 F7 F0 42 30 04 40 04 00 1F 08 08 3E 00 0F 17 03 15 04 1A 1E 12 0E 1B 03 0A 5C 6F 67 03 20 01 00 F7 F0 42 30 04 11 31 F7 F0 42 30 04 40 04 00 0C 1F 10 0A 17 0F 08 08 10 10 0F 02 11 0F 1F 08 14 0C 0E 67 03 20 00 02 F7 F0 42 30 04 11 32 F7 F0 42 30 04 40 04 09 15 17 17 0D 17 0D 08 01 06 15 17 06 19 08 1F 1F 00 1F 0B 33 00 21 3C 02 F7 F0 42 30 04 11 33 F7 F0 42 30 04 40 04 11 1F 0F 17 00 06 1F 10 0E 08 00 08 0D 19 1D 1F 10 14 20 0E 00 00 20 00 07 F7 F0 42 30 04 11 34 F7 F0 42 30 04 40 04 00 06 0C 08 0C 10 15 08 0A 0D 04 17 04 11 17 1F 08 00 1B 47 33 2A 20 14 3F F7 F0 42 30 04 11 35 F7 F0 42 30 04 40 04 00 02 0C 08 00 17 16 17 0D 0C 06 10 05 11 08 1E 06 13 54 00 00 00 20 3F 37 F7 F0 42 30 04 11 36 F7 F0 42 30 04 40 04 09 0C 08 17 07 18 05 10 1B 04 1D 17 02 19 05 16 06 00 07 0E 00 00 20 09 02 F7 F0 42 30 04 11 37 F7 F0 42 30 04 40 3F 00 1F 08 18 0A 09 05 08 02 0F 02 1E 02 19 15 1A 1C 00 13 0E 00 00 20 00 07 F7 F0 42 30 04 11 38 F7 F0 42 30 04 40 04 00 1B 0F 08 0E 11 13 17 02 0E 05 00 12 19 0A 14 0D 00 35 05 33 2B 21 0B 07 F7 F0 42 30 04 11 39 F7 F0 42 30 04 40 04 00 15 0F 10 09 10 0F 19 09 1D 10 0D 01 19 08 1F 08 14 31 47 4F 05 20 00 35 F7 F0 42 30 04 11 3A F7 F0 42 30 04 40 04 1A 15 15 17 06 18 15 12 0A 1B 16 1D 03 19 08 16 08 14 09 0E 33 03 20 18 00 F7 F0 42 30 04 11 3B F7 F0 42 30 04 40 04 09 1F 06 18 0D 14 0D 08 1A 1D 05 17 02 11 1F 16 0F 14 0B 4A 67 00 20 13 35 F7 F0 42 30 04 11 3C F7 F0 42 30 04 40 04 00 1D 08 10 0C 02 03 08 12 1C 1A 00 05 11 13 00 06 12 1B 07 67 01 24 3F 05 F7 F0 42 30 04 11 3D F7 F0 42 30 04 40 00 09 16 17 0F 23 1E 00 1F 17 1F 14 08 11 19 06 1A 04 1D 0B 4A 79 15 00 17 00 F7 F0 42 30 04 11 3E F7 F0 42 30 04 40 04 11 0C 0F 17 34 1E 03 05 16 13 05 17 04 19 05 0A 0E 32 13 0E 67 3F 20 0C 07 F7 F0 42 30 04 11 3F F7
===================================================
Command list that will cause the DW-6000 to return all params of all 64 patches (512 bytes):

C1 00 F0 42 30 04 10 F7 C1 01 F0 42 30 04 10 F7 C1 02 F0 42 30 04 10 F7 C1 03 F0 42 30 04 10 F7 C1 04 F0 42 30 04 10 F7 C1 05 F0 42 30 04 10 F7 C1 06 F0 42 30 04 10 F7 C1 07 F0 42 30 04 10 F7 C1 08 F0 42 30 04 10 F7 C1 09 F0 42 30 04 10 F7 C1 10 F0 42 30 04 10 F7 C1 11 F0 42 30 04 10 F7 C1 12 F0 42 30 04 10 F7 C1 13 F0 42 30 04 10 F7 C1 14 F0 42 30 04 10 F7 C1 15 F0 42 30 04 10 F7 C1 16 F0 42 30 04 10 F7 C1 17 F0 42 30 04 10 F7 C1 18 F0 42 30 04 10 F7 C1 19 F0 42 30 04 10 F7 C1 20 F0 42 30 04 10 F7 C1 21 F0 42 30 04 10 F7 C1 22 F0 42 30 04 10 F7 C1 23 F0 42 30 04 10 F7 C1 24 F0 42 30 04 10 F7 C1 25 F0 42 30 04 10 F7 C1 26 F0 42 30 04 10 F7 C1 27 F0 42 30 04 10 F7 C1 28 F0 42 30 04 10 F7 C1 29 F0 42 30 04 10 F7 C1 30 F0 42 30 04 10 F7 C1 31 F0 42 30 04 10 F7 C1 32 F0 42 30 04 10 F7 C1 33 F0 42 30 04 10 F7 C1 34 F0 42 30 04 10 F7 C1 35 F0 42 30 04 10 F7 C1 36 F0 42 30 04 10 F7 C1 37 F0 42 30 04 10 F7 C1 38 F0 42 30 04 10 F7 C1 39 F0 42 30 04 10 F7 C1 40 F0 42 30 04 10 F7 C1 41 F0 42 30 04 10 F7 C1 42 F0 42 30 04 10 F7 C1 43 F0 42 30 04 10 F7 C1 44 F0 42 30 04 10 F7 C1 45 F0 42 30 04 10 F7 C1 46 F0 42 30 04 10 F7 C1 47 F0 42 30 04 10 F7 C1 48 F0 42 30 04 10 F7 C1 49 F0 42 30 04 10 F7 C1 50 F0 42 30 04 10 F7 C1 51 F0 42 30 04 10 F7 C1 52 F0 42 30 04 10 F7 C1 53 F0 42 30 04 10 F7 C1 54 F0 42 30 04 10 F7 C1 55 F0 42 30 04 10 F7 C1 56 F0 42 30 04 10 F7 C1 57 F0 42 30 04 10 F7 C1 58 F0 42 30 04 10 F7 C1 59 F0 42 30 04 10 F7 C1 60 F0 42 30 04 10 F7 C1 61 F0 42 30 04 10 F7 C1 62 F0 42 30 04 10 F7 C1 63 F0 42 30 04 10 F7

[woodstalker]

Hey Jonathan,

Thanks for the work and posting it all up! I recently picked up a DW 6000 myself and am stumbling thru the transition from guitars to keyboard. Although I have a little experience with electronics (mostly building guitar effects and amp repair) I haven't needed to do much with the Korg as it still has the factory presets and and seems to be functioning fine. However, I am concerned about replacing the battery and would like to have a copy of the service manual for the dw6000. I found an owners manual online but my printer program isn't happy with the huge file (it's a scanned pdf) Anyone know where I could download a copy? I must admit that I haven't done my due diligence to search this site yet. Anyway, I saved the data you posted for future reference ... thanks again.
Rob

[MakeBeep]

Rob,
I bought a service manual online from Murray at Painting With Sound. For a 5 Euro PayPal donation, he will put up to 5 PDF manuals online. I figured that it's worth 5 Euros since it's a very reasonable price and other places wanted to charge at least $25.00 for a single service manual. http://www.paintingwithsound.co.nz/
Updating the battery is pretty easy, it's on the CPU board. The factory battery is soldered down but you can install a battery holder (a battery holder for a 2032 coin cell battery). Digikey has 3 manufacturers that have 2032 holders in stock. I didn't want to wait for shipping and couldn't find a holder locally so I soldered some wires to a battery and then soldered the wires to the PCB just to get started. I sanded the battery surface to break through the chrome before applying solder to the battery to make a better surface for the solder. Be careful also that you do not make the battery too hot -- risk of exploding (which is another arrow pointing in the direction of installing a holder instead).
So now I am at the point that I put in a week of effort on trying to debug the circuit and revive the keyboard. I've put it on hold so I can do other things. But MIDI I/O works (since I was able to program it) so I know the main CPU is alive and running the correct code. I bought a suite of DIP ICs to replace everything on the CPU board except the CPU itself (the person who gave it to me admitted that he was poking around inside it and heard a zapping/frying sound). I have not been able to detect anything that looks like a smoked resistor or blown cap but I am sure I'll get back to it soon.
I don't feel right just sending or posting the service manual since Murray was so responsive and the PDF service manual he sent me was worth way more than the 5 Euro donation (He actually sent me the user and service manuals for the DW6K and the DW8K - 4 manuals total).
I hope this helps and I'll keep posting as I learn more about the DW6000.

Best!
-Jonathan

[woodstalker]

Thanks again, Jonathan

Agree completely with your comments on the manual you purchased .. ethics count ... even in cyberspace. Thanks for the link and the remarks re battery installation. I do have some button/coin cell battery mounts .. so as to not lose data, I was considering connecting the new battery in parallel and then disconnect the old one (quickly). But I guess I'll research a bit further before risking the over-amperage.
BTW, I inherited a massive amount of analog and digital components and , should you find you need something obscure or unavailable, let me know by posting and I'll email or PM you.
Look forward to hearing more on your "patient in progress"

RobS

[skatronix]

[billbaker]

Stupid question.

Is there a "memory protect" on that would keep data from loading?

Given age o the synth this might even be a physical switch.

BB
_________________
billbaker

Triton Extreme 88, Triton Classic Pro, Trinity V3 Pro
+E-mu, Alesis, Korg, Kawai, Yamaha, Line-6, TC Elecronics, Behringer, Lexicon...

[skatronix]

Jonathan, thank you. Great info on subject. If i manage to get this problem solved asap, ill surely post it here. My technician friend will help me with this.

BB, surely memory protect switch has been noticed and tried both on and off..
_________________
with small monosynth comes great power!

[billbaker]

Skatronix,

Yeah, but...

Never hurts to ask.

There are a lot of seemingly obvious fixes for posts here that just got overlooked... "my pedal won't work right", "midi's doing something odd", etc.

Notice, I didn't ask if the power was on!

BB
_________________
billbaker

Triton Extreme 88, Triton Classic Pro, Trinity V3 Pro
+E-mu, Alesis, Korg, Kawai, Yamaha, Line-6, TC Elecronics, Behringer, Lexicon...

[transient_sun]

I'm having the exact same problem described by the original poster, except it would appear that my battery is in working order. It seems like the analog board is isolated from the rest of the system, which seems to work fine, but I can't do any in-depth electronic testing here. Could it just be a blown capacitor on the analog board, or some kind of strange wire rot?

By the way, do any of you who are having this problem know what was happening when it started? I got this 6000 from a friend, who said he was recording a track via midi when it just started making "strange noises". He turned it off immediately but it's been making the death tone ever since.

[Tonwood]

I had the same problem with a falling down sound after power on, but full time without a sound and reaction on a keyboard. Reason was defective ROM 2764 on the block of synthesis (middle PCB) with erased firmware 840905. Replacement of this IC with normal firmware corrected everything.
I think, possible bad contact in the this ROM socket, or old and periodical inactive oscillator crystal (12MHz) of this microcontroller, I was replace the same crystal in the control processor, because he not work, and this synthesizer was full dead.
Sorry for late answer, I purchased this synthesizer a week ago, and now he fully functional, remained to replace the old buttons and potentiometers.

Some info about DW 6000 hardware and two files - 840805.bin 840905.bin - firmware ROM images is free available on the page.
http://sounddoctorin.com/synthtec/korg/dw6000.htm
No problem for free download service manual with schematic diagrams , PCB, and repair/tune of this device - DW-6000_SERVICE_MANUAL.pdf

This message is copy of my message in the other forum.

[Tonwood]

Colleague MakeBeep,
Unfortunately, you make fatal mistake in your Get_all64_from_DW6K.syx
Set Patch number in message( C1 xx ) must be seen in HEXdecimal format as 01,02,03,04,05,06,07,08,09,0A,0B,0C,0D,0E,0F,10,11,12........... and more
but not as into your sysex file .....08,09,10,11,12,13,14,15,16,17,18,19,20,21,22....... and more
I was tested it with real DW6000 and have really result (created from video record during processing):
Get_all64_from_DW6K.syx
pattch order :
11 12 13 14 15 16 17 18
21 22
31 32 33 34 35 36 37 38
41 42
51 52 53 54 55 56 57 58
61 62
71 72 73 74 75 76 77 78
81 82
11 12 13 14 15 16 17 18
21 22
31 32 33 34 35 36 37 38
41 42
51 52 53 54
(result - wrong order of patches and lost/double data).
For this reason, I had already lost one good Bank, which is preserved from the previous owner of the synthesizer. ((

I was create normal sysex, with right order of patches and was tested it with video records during sysex processing -
Get_All64_from_DW6K__Fine&Tested.syx
Normal processing from 11..18 to 81..88

More - Coerced_factory_sysex_vals_2010-03-08.syx IMHO is wrong too - all sounds like a bunch of different noises, and not as a factory patch, but standard 1720.syx has no problems with loading, and all patches really match the words on the front panel.
For right and _really_ tested sysex for factory DW6000 bank and get all 64 current patches in archive - I use MIME format (copy this MIME text to notepad and save as fine&fested_patches_to_dw6000.b64 , and unpack with Total Commander or any MIME unpacker) :
-------------------------------------------------------

MIME-Version: 1.0
Content-Type: application/octet-stream; name="fine&fested_patches_to_dw6000.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="fine&fested_patches_to_dw6000.zip"
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[kashmere01]

hello all,
been looking high and low for the original patch tape content for my dw-6000
it was givin to me and i would love to get it going,just installing the new iec plug,and about to replace the battery
so if anyone could help me out that would be great!!
oh i dont have a usb to midi cable so was going to do this the old fashion way!!

[kashmere01]

well looks like im in the same boat...no load screen when trying to load from tape...anyone figure this out yet?

[Tonwood]

If need tape file with factory patch see this page :
http://erha.se/~ronny/dw6000/dw6000.htm
(Korg DW6000 vaweform mod),
and concrete
http://erha.se/~ronny/dw6000/dw6000_factory.mp3
(Tape MP3 image)
I not test this file.
After battery replacing need to set parameter 82 to 2 (enable all midi data) and, if need, 83 to 1 (MIDI omni).