HELP!!! I BROKE MY PROCO RAT!

[heavyfunkmachin]

hi all,

i got an old (83 or so) proco rat pedal, and it got the input and output jacks broken, so i decided to replace them myself... no big deal i said to myself.. i´ve done it before with cable jacks...


so i took it apart and i did it the best i could... results? NO SOUND AT ALL

I checked my little plan... but i dont know what to do... so im desperate and begging for help (by the way, i have NO idea about electronics)

this is a picture of my rat and the map i draw trying to copy the original wiring... as far as i believe red cables are for "feeding", green one is "earth", and black and white/yellow are for sound... man, i dont have a CLUE!

[bongomania]

The pic is missing.

[heavyfunkmachin]

here are the images:

[bongomania]

Hmmm... the sketched map is probably what got you in trouble, as none of the connections are labeled. You need to figure out which tabs on the audio jacks are "tip" (signal) and "sleeve" (common). And the map shows two red wires coming from the DC jack, but one of them should be ground.

[shooter_mi]

I think, bongo, that in the sketch, one of the red wires from the dc jack goes to the battery clip and the other red wire goes to the board. The black wires between the three jacks are all ground.

[shooter_mi]

What's the deal with the arrow pointing to the cut resistor in the photo?

[heavyfunkmachin]

the arrow is the kruegz (wrong spelling?) mod, no big deal...

so you think its ok that only one part of the "out" jack (end i believe) is connected??

btw, the green cable is connecting to a thin line... waybe grounding everything?

i have no idea... but i think all black wires can´t be ground.... SOME cable needs to be connected to the pins... o r something.... i dojnt know


so you think is the end pin/sleeve cables that i got mixed up??

p.s. i did the sketch (its all my fault)

[bongomania]

I was just suggesting you should check out those connections because it's hard to see how they terminate in the pic. The output jack should be fine if it has the signal wire going to the tip tab and the ground wire going to the sleeve tab.

A multimeter would help you out a lot here. Also if you really want to get into it, go to geofex.com and search on "audio probe". It's a simple tool you can make yourself which allows testing how pedals are (or aren't) working.

[shooter_mi]

Originally Posted by heavyfunkmachin

the arrow is the kruegz (wrong spelling?) mod, no big deal...

so you think its ok that only one part of the "out" jack (end i believe) is connected??

It looks to me like the output jack has a black wire connecting, and an uninsulated (bare metal) wire running to ground. That's enough connection for the output, if the wires are connected to the right tabs on the jack (Bongo's right about how a multimeter would be helpful to verify this).

btw, the green cable is connecting to a thin line... waybe grounding everything?

If it's that thin, uninsulated, bare wire that runs between the jacks, then yes, that's probably ground.

i have no idea... but i think all black wires can´t be ground.... SOME cable needs to be connected to the pins... o r something.... i dojnt know

In the pedal, one balck wire if the signal out of the pedal, the other is the negative elad from the battery. You did have one ground wire colored black in your sketch...that's what I was referring to in an earlier post.

so you think is the end pin/sleeve cables that i got mixed up??

If all you did was unsolder the wires from the jacks, and then resolder them to identical jacks, then yeah, you proabably got pins/sleeves mixed up. Or you might have wired the battery up incorrectly so that it doesn't connect to ground when it's pulgged in. That would keep the board from getting power, and because this isn't true bypass, that would kill the signal even in bypass mode.