Keeley Boss SD-1 Stacked Mod... Need help!

Started by visualdistortion, October 13, 2009, 07:36:03 PM

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visualdistortion



The Switch:
- Up Position: Red Led (Apparently 5mm Led)
- Down Position: 1N60 (Information via Keeley website)
- Yellow cap 0,1uF between the extremity, I think.

PCB:
- 2n5484 transistor with one leg to D7, middle to C2 and another to C9.
- D2 is removed.
- Two TI RC4558P IC stacked.
- Now it's missing the value of the 6 caps (Panasonic SMF). (The large cap is probably a 1.0uF).
- Others changes?!

Can you help for make mod 100% complete?!

Thanks a lot!


allan_belt

Hello and greetings from Peru, i just recently read your post and i have some info :
c7 change to 1uF metal film
c2, c3 change to 0,1 metal film
c1 ??? :icon_question:
c4 ??? :icon_question:
c8 ???  :icon_question:
the Fet 2n5484 is added to the circuit to fix the distortion bleeding in bypass mode.
d2 is not removed i just magnified the image and there is a jumper on it.
on both extremes of switch are connected positive of a 3mm. red LED and cathode of a 1n60 Ge diode (other will work) tied and soldered the other extremes to the middle of switch .
two cables comes from D7 to the extremes of the switch matching the polarity
the yellow stuff is a 47pf soldered at both extremes of switch.
maybe someone  else could help... :icon_lol: