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nilo
Bronze Member
Sweden
75 Posts |
 Posted - 07/03/2009 : 15:46:37
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i need help to fix my sd-1..
i don't know if the problem was there when i got it or not, because i didn't try it before i started modding...
the problem is, the LED is always on, but there is no OD-effect coming out...
i have signal coming through, but it's "bypassed", non-effected.
no matter how much i press the switch, i don't get any OD. Neither does the LED switch on and off, it's always lighting.
i have measured the switch, and it's working, 0V when pressed.
i also measured the 47uF and I have the 4,5V here.
I just don't know what the problem might be... |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 07/03/2009 : 16:04:20
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Hi nilo
Can you upload some pictures?
Does it look like it's been modded or worked on?
You did not mention whether you were using a "Known Good" battery or a power adapter.
Please try it with both.
Any there any obvious signs of abuse?
Regards Dr. Bob  |
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/03/2009 : 16:10:18
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pics will be a bit hard, only have the one in my cellphone..
it HAS been worked on, by me, at least, but, i bought it used from a music shop here in sweden and it looked a bit rough on some places, though, it seemed everything on the inside was stock (maybe not the wires)...
i'll see if i can upload some pics...
oh, and i am using a known good power adapter 
no obvious signs of abuse, other than the legs on the transistors that had been bent a little, but i bent them back... |
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/03/2009 : 16:44:58
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Dr. Bob
Moderator
Australia
6593 Posts |
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/03/2009 : 17:09:08
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checked, it, and it seems the wiring is correct atleast...
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/03/2009 : 17:26:58
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any idea? |
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/03/2009 : 17:52:06
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| i attempted a "shotgun-solution" and resoldered all solderings, now i have OD-effect along with a high-pitched sqealing noise. but i still can't shut the pedal of with the bypass-switch... |
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/03/2009 : 18:51:08
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| problem solved, loose solderjoints on a cable and R1... |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 07/04/2009 : 02:30:04
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quote:
Originally posted by nilo
problem solved, loose solder joints on a cable and R1...
Another Boss pedal lives to gig another day.  
Good Detective (Tech) work nilo.
I did notice that someone has fitted an IC socket, & possibly some other mods to your SD-1.
Regards Dr. Bob |
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nilo
Bronze Member
Sweden
75 Posts |
Posted - 07/04/2009 : 21:37:31
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| oh, the socket was fitted by me, i've done a few different things on this baby, and she sings beatuifully! |
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Topic |
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broken SD-1.
