Help! DS-1 Mod Fail

[nickrusty]

Hey guys. I first wanna say I love the site. I attempted to do the Keeley mod on my Boss DS-1 with the All-Seeing Eye and the Ultra mods. After reassembly I tried testing it. It seems that the signal doesn't go through the pedal, with or without power. No sound comes from the amp. Are there any ways I can test the circuit? I'm fairly confident with a multimeter. It's my first build and now I'm sort of discouraged. Any tips would be awesome. Thanks!

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[antonis]

Maybe you love this site but for sure you don't read it...!!   

http://www.diystompboxes.com/smfforum/index.php?topic=29816.0

Wellcome...!! 

[Elijah-Baley]

Welcome!
You should link us the schematic and the details of the mod.
When I modified my MT-2 I desoldered or swapped one component at the time and I tested the pedal everytime before to go on.

Meanwhile, you can check all the soldering you did.

[nickrusty]

I haven't gotten great at navigating it yet. It's a bit different than other forums I'm on. This is what I used. http://www.instructables.com/id/How-to-convert-your-DS-1-to-Keeley-All-seeing-eye-/?ALLSTEPS

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[lukeferg]

Welcome mate,

You won't get any sound without power out of a boss pedal. They've got buffered bypass. Do you get sound in bypass mode with the pedal powered? You didn't quite make that clear. If you're not getting sound at all then my best guess is you've got a short somewhere in the switching part of the circuit.

[nickrusty]

I don't have an adapter for it but I did have a good 9v battery in it and it didn't seem to do anything.i tried playing with the switches and knobs to see if maybe something was loose but no such luck.

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[deadastronaut]

Take a deep breath...

then go through every stage of the mod process marking off every change you have done..

and triple check every stage...cap, wiring etc...

hopefully you,ll see where you may have missed something...

[nickrusty]

What do I do to check them? With a tester? Just like how good I soldered it?

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[lukeferg]

Yes, check the soldering and the component placing against those instructions.
I followed those exact instructions about 5 years ago and it worked perfectly first time so the problem is likely something you've mistakenly done. It happens to all of us but persevere.

A high res photo of the front and back of the pcb would help, I can check it against my board.

Edit: sorry, I didn't use those instructions, I used these ones. Check what you did against these, he gives a bit more info on it as well. http://www.instructables.com/id/Modify-Your-Boss-DS-1/

[nickrusty]

I'll get some pics tonight. I noticed that I got solder between d4 and d5 diodes

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[nickrusty]

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[lukeferg]

There are quite a few questionable solder joints there. There are a few that look like they could be shorting out to a different part of the circuit board. Also, one of the leads near the cap on the underside looks barley connected. I also don't like the way the wire going to the switch is exposed down the bottom, could easily short something out. The on board switch components look fine but that's because none of them changed in the mod.

I'd be checking continuity of your wires going to and from the circuit board. You may have disconnected one when you were removing the board from the pedal. Even if they look visually connected they can still be broken.

To help you any more we really need voltages of your IC and your transistors

[nickrusty]

Okay so then I should put it back together and connect power. Then I can start testing? Sorry about basic questions. I'm a noob.

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[lukeferg]

You don't necessarily need to put it all back together to test, it will be easier to get your multimeter leads in the right spots.

Have your black lead connected to ground and then use your red lead to measure the voltages on the transistors and the ic.

Before you put it back together have you checked your soldering and fixed that up? I'd do that first, I doubt there's much of a problem voltages are going to help with.

Check for continuity of your wires going to and from the switch and input/output jacks

[nickrusty]

I'll get that cleaned up after work today. Thanks a lot for your help so far.

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[nickrusty]

So I got her working. It seems like it sounds different than I expected but it was a fun little project anyways.
In other news, there may have been a power surge and now my amp sounds messed up. If any of you guys happen to know much about tube amps, that would be sweet.
I feel like a lost puppy to keep asking for help.

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[lukeferg]

Good job, it's a good feeling when you figure it out.
As far as tube amps go I can't really help you. I'd take it to a tech, too hard to probably help on a forum apart from telling you to replace tubes and check fuses.

[nickrusty]

Thanks! That's what I figured. Is there a thread on here that would tell me what to replace to make that pedal sound different?

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