My Pedal - Something is wrong.

[9V]

I'm sorry, i don't know if this should be here but....

I have a MAXON D&S II, and yes... it's broken. When the pedal is turned off, the drive is still engaged and the controls are still contrable even in bypassed mode (off). I took it to a shop and they could not figure out what was broken or was wrong. It wasn't the switch, ac or any of the wirings. I tried asking on couple guitar forums, but no helps there. Additionally, i have no pictures of the pedal either.

Please help, i really like this pedal.

[petemoore]

It wasn't the switch, ac or any of the wirings.
  Where was I heard this before..oh yes, right here...lol.
  I'd go to the debugging thread, read and task out the testings, taking notes and posting information on the pedals status as depicted by many tests using DMM and possibly audio probe, post the results here.

[Paul Perry (Frostwave)]

On the bright side, there is a hell of a lot RIGHT!
if you are saying it works perfectly except that you cant switch it into bypass.

I don't know whether these are true bypass - if so, the switch IS broke - or if it is an electronically toggled bypass. In which case it could well be the switch after all, or the electronics that toggles.

Of course, this is a chance to rewire as true bypass

[petemoore]

  +1
good point ^

[GibsonGM]

9V, if there's any way to get one, a schematic would help you out immensely with this.  Try searching on Google.  If you have electronic switching, it's entirely possible that one of the JFETs is fried, but it would be extremely hard to give you advice if we can't see what we're trying to talk about   

Sometimes it's easier to just replace the piece of gear when this sorta thing happens - depends on your background and ability to get in there and troubleshoot.  It WILL take time to figure out.   If you can get the schem, I'm sure lots on this forum would be willing to take a look at it and make suggestions, tho....

[petemoore]

  I'd guess [operative word] there may be only two jfets in it, probbly for BP switching, it might not be too hard to identify the input gate and output source points, and connect to them [without overheating the fet's.
  Fitting a 3PDT where there was none may be a more difficult matter.
  >Loop box?...comes in handy anyway.

[9V]

I own a DMM; i bought it when i was trying to be a DIY. I don't know what JFETs are but those sound very familiar... It would be a pain to fix that particular part i'm guessing. Also, I could not find Maxon D&S II schematic online.

I'm guessing these are not True Bypasses, due to Godlyke's efforts to copy their original pedals from long ago. The guys at the store said that they even tried a different switch... no luck at all. They did not know if this was a TB pedal or whatever. "Electronics that toggles the bypass", where would be the electronic located at?

Would providing some pictures really help?

thx guys.

[choklitlove]

Would providing some pictures really help?

oh yeah they would!

[edster]

Original or RI?

It's been a while, but I'm pretty sure the original uses a flip-flop and  fets. Should be nearly identical to a TS9.
The RI claims to be TB but never disconnects the input jack from the effect.

In any case, this is most likely a switching issue. The flip-flop in the original can be a little tricky to troubleshoot if you dont know what you're looking for. Prolly best to shotgun it. (2) 2sk30A fets, (2) 2SC1815 BJTs, (2) 1N914 or 1N4148 Ds. 95% likely to take care of it.

If it's an RI replace the switch.

[petemoore]

  If there's two transistors in it, that'd be the two, I think...it's Jfet BP electronics doing the BPing.
  I'd have to take a look at a Jfet bypass switching schematic, but guess the fet's would have their drains connected to V+/the battery +clip, [maybe there's a <220ohm resistor for PS filtering...maybe]..anyway that'd find the drains.
  The source will have a resistor...something around 10k value, and the gates will probably have large bias resistors...again without looking at the schematic.
  Since the effect works, it'd be a matter of tapping at the input Jfet's gate with a wire to the TB switch, and tapping the output transistors source connection..and wiring to new bypass switch...that you somehow figured out how to mount in there.
  Loop box...