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Dod 250 bypass issue
Posted: Sat Jul 25, 2020 4:08 pm
by Johno
I love the Dod 250/ Mxr Dist + circuit(s)..... but my Dod does not pass signal when switched off, it's one of the old 3 lug switches, anyone know how to wire it so it passes signal when off?
I have 2 MXR's and one of them also has the 3 lug but passes signal fine.
Posted: Sat Jul 25, 2020 7:13 pm
by NickS
I see the bottom left MXR has been made true bypass.. I wonder whether the DoD was converted and converted back wrong. I can't see enough of the wiring to tell you what's wrong though.
Posted: Mon Jul 27, 2020 4:20 pm
by Johno
Posted: Mon Jul 27, 2020 5:37 pm
by sunshiner
Unrelated to the questions, but I'm curious how do the germanium diods behave in hot environment? Do they go meh the way germanium transistors tend to go?
Posted: Mon Jul 27, 2020 5:59 pm
by George
I thought only the newer 250 reissues were true bypass. Could be wrong though.
Posted: Tue Jul 28, 2020 5:01 am
by holyCATS1415
The footswitch is probably faulty. If you have a multimeter you could check if it’s good or not.
Posted: Wed Jul 29, 2020 10:03 pm
by NickS
holyCATS1415 wrote:The footswitch is probably faulty. If you have a multimeter you could check if it’s good or not.
This looks like the answer. The wiring looks correct for the Carling 112-P footswitch, the output jack is connected to the common tag by a purple wire and the A and B are the purple wire from the input jack and the blue wire to the effect PCB that isn't connected to the input jack. Replace the 112-P.
Posted: Fri Jul 31, 2020 2:11 pm
by Johno
NickS wrote:holyCATS1415 wrote:The footswitch is probably faulty. If you have a multimeter you could check if it’s good or not.
This looks like the answer. The wiring looks correct for the Carling 112-P footswitch, the output jack is connected to the common tag by a purple wire and the A and B are the purple wire from the input jack and the blue wire to the effect PCB that isn't connected to the input jack. Replace the 112-P.
Thanks guys, off on my hols (lockdown willing) but will order a switch upon my return and report back....
Posted: Sat Aug 01, 2020 11:44 am
by Mike
If you're replacing the switch anyway, I would plump for a DPDT latching footswitch and just make it true bypass so it doesn't roll off your top end when off.
But maybe that's already part of your TONE so you might not wanna screw with that
