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pawnshop_trash
Gold Member
USA
603 Posts |
 Posted - 01/16/2006 : 06:04:45
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looking at a partial copy of the DD-3A's service manual (first edition), there appear to be two details that can help determine whether a given model is a DD-3 or a DD-3A (without having to open it up):
* the service manual indicates that if the DD-3 has an adaptor jack that is flush with the bottom of the pedal's casing (like the old "ACA" style, except it of course uses a PSA adaptor), it's a DD-3; if it has a current-style "floating" AC adaptor jack, then it's a DD-3A.
* the service manual itself is dated April 1991, which would correspond to a serial number where the second letter and first digit would be C5. it is unknown whether the first edition service manual was released at the same time or after the DD-3 --> DD-3A change occurred, though.
I haven't opened up my DD-3 ("floating" AC adaptor jack, SN corresponding to April 1993) yet to 'test' this theory, but the evidence strongly suggests it's a DD-3A. (I'll open it up only after I have the parts and soldering skills needed to try out the 'high cut' mod.) however, if any denizens of bossarea have opened their DD-3, it would be great if you could report what you see under the hood. and of course, if anyone has both a DD-3 and a DD-3A, an A/B test would be helpful as well.... |
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phostenix
Gold Member
USA
754 Posts |
Posted - 01/16/2006 : 07:26:51
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My DD-3 has what you are calling the floating power jack. The jack is mounted on the PCB, unlike the older style that had wires from the PCB to the jack. Mine has an H2 serial number - March 1995. The PCB has the smaller, square surface mount IC and the board says DD-3A. It makes sense that the change coincides with the change of the power jack since the newer style has the jack PCB mounted. I would be surprised if Boss re-designed the PCB just to add the jack onto the board. Makes more sense that they would make the change when the board got re-designed for the new IC. But, then again, if they were changing all the cases to the new style power jack, all the pedals would have to have their PCB's re-designed. Another interesting thing to look at on Boss pedals.
Grace and peace,
Steve
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bossarea
Forum Admin
United Kingdom
3652 Posts |
Posted - 01/16/2006 : 11:37:55
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Thanks for the info, pawnshop. It narrows down the date quite a bit.
My own DD-3 is a 6 digit serial version with bottom placed adaptor jack.
quote:
if they were changing all the cases to the new style power jack, all the pedals would have to have their PCB's re-designed.
When they changed the case to accomodate the newer jack they didn't change all the cases. The SD-1 still has the same old style jack today. I like the theory that they changed the case at the same time they were redesigning the PCB. |
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pawnshop_trash
Gold Member
USA
603 Posts |
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VH100R
Copper Member
Portugal
37 Posts |
Posted - 01/24/2006 : 20:34:28
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| well my DD-3 version 2b is MIJ. Andreas at Stinkfoot though they were all MIT but was not sure.... |
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stinkfoot
Silver Member
Sweden
181 Posts |
Posted - 01/25/2006 : 06:28:28
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You have one of these:
with a MIJ label? That's exactly the kind of info I was looking for. Btw, what colour is the label?
/ANdreas |
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bossarea
Forum Admin
United Kingdom
3652 Posts |
Posted - 01/25/2006 : 11:29:51
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| and what is the serial number? |
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VH100R
Copper Member
Portugal
37 Posts |
Posted - 01/28/2006 : 03:59:26
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Yes Andreas I have that one with the square IC. the label is blue.... serial number is: #BD12418
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stinkfoot
Silver Member
Sweden
181 Posts |
Posted - 01/28/2006 : 16:00:11
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...and the adapter jack is soldered directly to the pcb (like in the pic above)? That's good info, and it's time for an update. Thanks!
Edit/added: That serial # means it was built in october 1991, which means that the DD-3 moved to Tawian a lot later than some of the other pedals. Cool info! 
/Andreas |
Edited by - stinkfoot on 01/28/2006 16:03:30 |
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VH100R
Copper Member
Portugal
37 Posts |
Posted - 01/28/2006 : 19:22:25
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I will post here some pics when I have my pedals at home and will check out the power jack issue. One thing I know is that is a PSA one...
take care |
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JFC2K6
Copper Member
Brazil
2 Posts |
Posted - 02/18/2006 : 15:19:14
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Someone here knows where can I got the schematics for my DD-3A (ver 2b), I have only found the DD-2/3 (later version) schematics... Thanks! Sorry about my bad english! |
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DD-3 vs. DD-3A?
