I need some help from a guru...
I recently finished a lofty build that includes phase, chorus, flange, and delay. For flanger, I just removed the guts from a BF-2B, but wanted to true bypass it, so I've got it wired to a 3pdt switch for on/off.
My hope was that I could simple ground the "hot" lead of the switch, and have it be on all the time, but I immediately found that the switching of the circuit is latched, so that, while it requires grounding R54 to trigger the latch to "on," simply attaching that wire to ground did nothing to turn it on, when I plugged into the input of the box.
My immediate work around was to solder the wire from #18 to the same lug on the 3pdt that the LED (my LED, not Boss) ground is wired to, so that, kicking on the 3pdt would then ground the circuit switch and trigger the latch. This worked, but not immediately. When tinkering with it at home, I found that, once I plugged into the pedal input, I had to toggle the 3pdt 2-3 times, before the flange circuit would turn on. From that point, it stayed on, and I could use the 3pdt to toggle between "on" and "off" at will, without problems. If I unplugged my guitar cable, I would once again have to toggle the 3pdt 2-3 times, to get the circuit to turn on, then it was fine indefinately again, as long as the guitar cable stayed plugged into the input.
Last night, I tried it out live, and found that the "kick starting" wasn't working as it had at home. Now, instead of 2-3 toggles and all was good, I found that I had to toggle the 3pdt multiple times...4-5 times, before the circuit would come on, and when I toggled the 3pdt off and then on again, I'd have to re-do the "kick start."
Obviously, having to kick start it at all is hardly ideal, BUT, if it was limited to once per night, when I first plugged into it, I could live with it. Toggle the switch 2-3 times, and I'm good for the night. However, if that's not going to be the case moving forward, and, for whatever reason, now I have to re-do the kick start every time I want the circuit on, that makes no sense at all for live use.
So, I need to find out if there's a way that I can bypass that latching electronic switch altogether, and just have the circuit on all the time, so that I only have to hit the 3pdt once to switch it in line.
http://www.hobby-hour.com/electronics/s/boss-bf2-flanger.php (http://www.hobby-hour.com/electronics/s/boss-bf2-flanger.php)
Thanks!
One way is to remove Q4 and replace it with a jumper where the drain and source went.
Cool, so this will kill the latched switching, and leave the circuit on all the time? Source and drain are pins 1 and 3, correct?
Thanks!
Everything you need to know is in this PDF.
http://www.geofex.com/Article_Folders/bosstech.pdf
Ok, so to clarify what I'm seeing, I'm going to remove Q9 and Q10, and jumper the source and drain from where Q9 was, is that correct?
That worked perfectly! Thanks for your help,
I knew you could do it! ;D