Messages

Yep, you can install it in the dry path. Simple mod.

Jacob

Essentially, you've narrowed the problem down: either you are doing something wrong, or there's a problem with the breadboard.

Jacob

Well, the first thing you should do is check out our rules and tips thread here: http://www.madbeanpedals.com/forum/index.php?topic=902.0

After you've read that and tried some things, come back and tell us how it's going.

Jacob

1590BB, or 125BB or bigger.

Jacob

WHAT! BYOC has a clone already?

Dang. I was gonna do a project for this one are release it as a PCB.

Jacob

[BROKEN]

A guy in Saskatoon bought this BROKEN on ebay for $600. He brought it to an amp tech in my town who said he could fix it... He did, but since the tech doesn't even play one note of guitar, he called me over to check it out and see if it was working. It was.



Probably gonna cost the guy more than $200 for the reapair, but I bet he could easy get 1000-1200 for it now.

Jacob

based on the gutshot, I'd put money on it being a Blueberry Bass Drive.

Jacob

Usually the Diode checking on a DMM is the same as a continutity tester. If it beeps, you've got a faulty diode.

To measure forward voltage, I forget how it's done.

Jacob

The first thing I notice is that you're not using the correct charge pump. With the LT1054 pump you need to remove pin 1 of the IC. Did you do that?

Jacob

1. Have you tried Tayda Electronics? I'm fairly certain they'll ship to you.
2. No, a JFet will not work in place of a MOSFET.
3. It won't work.

Jacob

Again, I'm really not sure what you're meaning specifically. When you say "getting power through the entire board," do you mean the Beavis board or the PCB you're working with? If the former, that's fine, now get the voltages on the PCB. If the latter, than you've got to start audio probing if the voltages look fine. When you say "no bad connections, input and output work," Do you mean the Beavis Board of the PCB you're working on? If the Former, than fine, what about the PCB? If the Latter, than again, you need to audio probe. Multiple grounds only matter if you have multiple things to connect, so if the Beavis board is grounded, and the PCB is attached to that ground, it doesn't matter if you have extra ground wires as long as all that needs to be connected is.

You keep seeming to be blaming the board for the problem. Chances are high that either you're making a simple mistake and missing it, or the PCB itself is not working properly. Just because you have made a million that have worked fine before, does not mean that this one is not the problem. Again, I will suggest that you not assume anything is working, and carefully recheck and check. Supplying us with the voltage numbers on the PCB itself is the next step if you have done all the steps I suggested above.

Jacob

Bill on the new Klon.

It's surface mount. That's why it took so long. Looks like I'm still in business for the purists.

Jacob

Essentially, if it works when you're just using it as a breadboard, than it's either the effect you've built on the stripboard that has an error on it somewhere (debugging) or you've done something wrong while hooking it up. There's no way for us to tell, so you have to start working the debugging steps. The things I'd check first:

Triple check your setup. If you've checked, and checked and checked, and it looks like you've hooked it up correctly, than you've got a problem on the board. However, don't assume you have it correct. Try and hook it up from scratch again.

Check your part values and orientation. Don't assume your circuit has been built correctly.

Check your soldering and your cuts. Don't assume anything is correct.

Check your offboard wiring - have you accidentally swapped your input for ouptut?

Last but not least, start taking voltages. If your circuit is not getting 9V, it's not going to work...

Jacob

Hmm... Unfortunately, no matter how many times I read what you've posted, I'm not clear on what you're issue is. I think we need clearer, and perhaps more, details. Happy to help when you can share more specifics.

Jacob

I haven't owned a Blues Junior, but I've played through one often enough. I haven't spent enough time with the Tweaker to say if it's 'better' which is a subjective term, but I can comment on it's versatility. The Tweaker is very much more versatile than a Blues Jr sonically, but they each have some benefits.

Tweaker:
- More sonic options (more switches than knobs)
- Tube Buffered Effects Loop
- 6V6 power tubes
- Selectable Voltage
- Selectable Impedance

Blues Junior
- Less sonic options (fat switch is a new thing?)
- Reverb
- EL84 Power tubes

So the one thing that the Junior has that I wish the Tweaker had is reverb. I can live with having a reverb pedal on my board though, and I prefer the 6V6 power tubes.

If it were me in your shoes, I'd save to buy/trade for a tweaker AND do a mod to my Blues Junior to make it more like a Princeton Reverb. Alternatively, I'd just have the tweaker, as I turned down several Blues Juniors on my way to this amp.

Jacob