Vintage Electro Harmonix Electric Mistress Issues

[jshakesepeare]

Trying to get this awesome pedal up and running.
Guy I bought it from has changed some of the wiring, and I couldn't quite tell from photos online where the issue is.

Here's what I have currently, there's no effect at the moment:








Thanks in advance!

[Scruffie]

Looks like you have both DC jack wires going to the ground lug to me.

Have you tested voltage is getting to the circuit?

[jshakesepeare]

There's only 1 wire coming off the DC jack. The other is the 18 V from the battery.
I do have 18 V coming from the DC jack to the board on that black wire...I'm not sure if that is supposed to be like that or not, I do suspect that I'm having a power issue.
I don't have an 18 V supply so am just trying to get the batteries working.

I've looked at other photos and it seems pretty close to working pedals, I'm thinking it just 1 lug off or something like that.

[Scruffie]

The rest look okay to me... but I can't claim to be able to see everything, i'd check the opamp voltages though, you wont get any signal if there's a problem there as the bypass signal comes from the input buffer IIRC.

Edit: Wait, where's your circuit ground?

[jshakesepeare]

Yeah...I'm not sure where the ground and where the 18V from the battery is supposed to connect to...

[jshakesepeare]

Does anyone have any ideas where to land 0 and 18V wires, or any pictures I can compare to?

[Scruffie]

The battery negative should go to the input jack ring and then the ground/sleeve from the input jack should go to the colour pots lug 1.

[cortezthekiller]

Also, it looks like you will require a stereo jack for the input to properly switch the battery on when plugging in, and to disconnect it when unplugged.

[jshakesepeare]

Currently when I insert either a mono or a stereo cable into the Input jack no lugs short together.
Do I need to change the jack to one that shorts 2 together to get this battery portion working so that they don't drain when pedal is not being used?
Sorry I'm a bit of a noob but am learning quickly!

[Scruffie]

Yup, you just need a stereo jack.

For the moment though, you can still ground the circuit to that jack where I said to test that it then works, but it will drain the batteries when not in use.

I think from the pictures you might need to rewire your DC jack too... but again, it should work as is for now.

[rainless]

Currently when I insert either a mono or a stereo cable into the Input jack no lugs short together.
Do I need to change the jack to one that shorts 2 together to get this battery portion working so that they don't drain when pedal is not being used?
Sorry I'm a bit of a noob but am learning quickly!

Currently it doesn't matter if you insert a mono or a stereo cable because you only have a mono jack. So any cable you stick in there is only going to act as a mono and you're not going to have the connection you need. You need a stereo jack as the others have said.

[jshakesepeare]

Thanks for the info. Will test the circuit in a bit. Last noob question....My input jack has 3 prongs and my output has 2. Doesn't the 3 prong mean it is a Stereo jack?

[cortezthekiller]

No. The input jack in your pedal is a switched mono jack.