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Old 10-31-2009, 10:11 PM   #1
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BOSS DD-3(b) schematics

I am looking for DD-3b schematics, this would be the board with the surface mount parts. 3rd generation of the DD-3.
(Yeah sucks)
Does ANYONE have the schematics?
I get the 'check light" and "direct out" sound, no sound routed through the delay at the output.
Hoping the schems will help me trace to the problem, and that it is NOT that BOSS chip.

-Thanks!
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Old 11-07-2009, 12:24 AM   #2
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I'll go ahead and post both DD-3 service manuals that I've been able to aquire. I posted the DD-2/DD-3 service manual already here:

Boss DD-3 dead

The DD-3a service manual with schematic and DD-3t service manual with schematic are attached. I don't know how the DD-3b differs.
Attached Files
File Type: pdf DD-3A_SERVICE_NOTES.pdf (941.0 KB, 18 views)
File Type: pdf DD-3T_SERVICE_NOTES[1].pdf (1.01 MB, 17 views)
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Old 11-08-2009, 12:12 AM   #3
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DD-3t schemes seem to be right. The board layout looks the same.

I bought surface mount equipment last sporing, and wil use it for the first time soon. (that specific equipment
Thanks much!
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