Dual wiring PCB's headache (boost and Rat)

Started by Snufkinoob, November 04, 2014, 05:08:46 PM

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Snufkinoob

I have this Rat clone: http://www.guitarpcb.com/PDF%20Files/Ratt%20PCR%20DELUXE.pdf
And this Boost: http://pedalparts.co.uk/docs/blaster.pdf

Separately, both work fine, but I want to streamline my board I want to put them in one box. Boost first, with a DPDT toggle switch, and the Rat using the standard 3PDT footswitch.

I've tried IvIark's dual wiring diagram as best I can: http://3.bp.blogspot.com/-T8OdqPmP_2Q/UG3WZyt28aI/AAAAAAAAC5U/lTz0RyZXAG8/s1600/!Offboard+wiring+-+dual.png but since the Rat's footswitch is inserted into the PCB I've assumed the Rat's In and Out (green and blue wires on the second footswitch) are part of the PCB trace, going directly to the foot switch.

But it's not working! Bypass is fine, and the Rat volume responds but nothing else in the Rat circuit (and the LED doesn't light up). The Boost seems to work fine, BUT the volume pot is unresponsive, and when it's bypassed, it turns everything completely off. No signal at all. Hopefully I've just wired up the toggle switch incorrectly?

Here's how I have it wired up:



Bare in mind the wiring diagram in the above link for the Rat has the illustration of the jacks the other way around, but I've kept it 'correct' in my pic to avoid confusion)








Then there's this alternative to try next: http://2.bp.blogspot.com/-J3EhMIZQLck/UH6a8ZnzSFI/AAAAAAAADHE/ewTfTXuvTYA/s1600/!Offboard+Wiring+with+switchable+pre-effect+booster.png and I was thinking the Out of the main circuit (blue connection to footswitch) would just be replaced with the grey connection, straight to the Out jack?

Bit of a chore to read. Hope that makes sense.

Any info is much appreciated. :)




knutolai

First of all grab your multimeter and make absolutely sure everything labeled ground is connected together (every contact that has a black wire connected in your picture). Then make sure that your 3PDT switch is soldered on correctly. Im thinking you might have connected it wrong (?), try rotating it 90 degrees. You could also test the DPDT switch you use for the boost to be certain its connected correctly. Depending on the switch you use the switch pinout could be incompatible with your wiring diagram. Hope that helps.

Snufkinoob

Quote from: knutolai on November 05, 2014, 08:15:11 AM
First of all grab your multimeter and make absolutely sure everything labeled ground is connected together (every contact that has a black wire connected in your picture). Then make sure that your 3PDT switch is soldered on correctly. Im thinking you might have connected it wrong (?), try rotating it 90 degrees. You could also test the DPDT switch you use for the boost to be certain its connected correctly. Depending on the switch you use the switch pinout could be incompatible with your wiring diagram. Hope that helps.

The Rat was working seperately, so that 3PDT is (hopefully still) fine. The boost, too, BUT with a different switch, wired the same way, so I'll try it in isolation, with this switch.


knutolai

If you have both circuits working on their own this should be as easy as connecting the output of the booster to the input of the Rat and merging the power supply wires.  :P