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Hobsy
Copper Member
United Kingdom
2 Posts |
 Posted - 02/23/2007 : 19:38:15
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Can anyone help me figure out what's wrong with a boss dd-3? I bought it off ebay as faulty hoping it would just be a loose connection or a dry solder joint or something obvious.
I opened it up, and found D6 loose. I soldered it back in, and no luck. After scouring the forums I found that D6 is for regulating the input voltage and has a tendancy to short out, which causes overheating and the componant to desolder itself. I figured this is what happened, and since I've also ready that the pdal will function without it, I removed the componant completely.
When I plug the pedal in, I get a dry signal through the output. If I am in the S, M, or L modes, that's all I get. I press the switch, and nothing happens.
If I am in hold mode, the LED comes on, and stays on even if I press the footswitch. Also, as well as the dry signal, I get a tone (sounds like a sine wave) on top of it, and turning the D.Time pot changes the pitch of this tone.
After running the pedal for a few minutes, IC9, the BA634 toggle flip flop and the surrounding area feel warm.
I think the BA634 may be faulty. Does anyone agree/disagree?
Another question I have is that if the BA634 is faulty, does anyone know of any suitable substitute componants, as I am having difficulty in sourcing a BA634... the only website I've found that sells them is in Ireland and charge �12.70 for shipping and have a minimum order of �12.50... in which case I'll end up paying over �25 for the part! I'm wondering whether there are any more obtainable componants which could be used in its place. |
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guirat
Silver Member
United Kingdom
186 Posts |
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Hobsy
Copper Member
United Kingdom
2 Posts |
Posted - 02/25/2007 : 13:10:29
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| Hmm... the 4013 is a D-type flip flop and the BA634 is a T-type, so I'm not conviced it would work. I'll post something up on the DIY stomp box forum though and see if anyone there can help me. |
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Second opinion on broken DD-3 (old version)
