I wish phone cameras has a manual focus ring…
Still, without my magnifier that’s prety much what it looks like in real life 
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Hard to tell but looks like a solder bridge from one rail, -12V I assume, to ground? Your power supply must not have liked that.
Checking power rails for shorts before plugging a new module in is recommended! While you’re at it, check continuity to the IC power pins too.
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(That’s Apple, but most Android cameras work the same way. Some also has a fully manual focus option, usually under “professional settings” or whatever it may be called on your phone.)
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Yep, no idea how, usually very careful, first one I have had with an issue like that,
And indeed not sure why the PSU did not pop… the Fuse should have blown before the 7912 was over stretched but neither died.
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Well I seem to have a different problem to the majority.
I have no CV output on CH1 and CH2, gate works but the CV on the same channel does nothing 
3&4 seem ok.
Gussing ot’s an op amp, but which one as the schematic just labels all the jacks “jack”
is it just me, or is U7 missing a decoupling cap?
In real life C15, C16 are next to U9 , and U7 only has one cap next to it. could just be layout.
yeah the other capacitor is a little further away than the others. but the voodoo electronic gods have not come down with any unwanted side effect powers.
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thats strange! thats definitely an odd one. no cv out of 1 and 2. but out of 3 and 4, I think they are buffered on the same opamp is it a inter board connection?
as in maybe test directly on the buffered legs the output for 1 and 2 which are… one sec legs 1 on U7 for channel one. and legs 7 on U7 for channel 2? are the triggers coming out of those channels??? as in can you see the triggers happening on the LED’s of those 2 channels? if not then it may be a problem before the module itself.
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Yeah the triggers working fine,
TBH I was stoked to even get a Flashy Midi Light 
.
Must be something simple , have swapped IC’s round with no change.
im trying to think what the first 2 channels share that the 3 and 4 do not. I suggest going through the paths with a multimeter or an oscilloscope. just see if there is any signal at all
for channel 1 :-
midimuso chip pin 14
U4 pin 3
U4 pin 2
U7 pin 3
U7 pin 1
main A connector PIN 2 then it goes over to the jack board.
to get that I looked at the schematic and just followed the route CV 1 took. it might be worth just having a look around if you have a pocket oscilloscope or multimeter see if there is any life at all
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Well hopefully tracked them down, having a working meter and magnify visor at home helped.
One missed joint on the output protection resistor ch1 and a dodgy looking one on the pin header for ch2.
Will hopefully get back to the workshop to test tonight
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I need a better camera, my old phone was much better
YAY Sorted
Cheers Sam…
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aaah awesome!!! good to see its working!! 
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Is there a simple easy tool to send the SYSEX data ( I assume that is wat the control files are ) Most stuff I encounter is usually 15 years out of date.
I have Cakewalk, although not used it.
What do you need to send SYSEX for?
For MAC, SYSEX Librarian:
For PC, MIDIOX:
Elektron has a more modern tool:
I assume the feature changes need sent via SYSEX?
Always ( well since i started looking 9 months ago ) find it a it odd that a highly popular “protocol” is supported by ancient software.
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Thats MIDI for you.