ilovefuzz.com

Trim pot is volume, I take it?

My third build, it's a Tone Pad "Dan Armstrong - Blue Clipper." It sounds like a Marshall set up kinda bass heavy, I love it. The clear coat came out kinda funny, but whatever, I'm still learning.

wsas3 wrote:Trim pot is volume, I take it?

bias.

volume knob is the volume.

The4455 wrote:My third build, it's a Tone Pad "Dan Armstrong - Blue Clipper." It sounds like a Marshall set up kinda bass heavy, I love it. The clear coat came out kinda funny, but whatever, I'm still learning.

Looks pretty sweet. The lines seem pretty crisp this time around too.

I ended up with similar results when i started clear coating, or sometimes even just applying multiple coats of color. I try to wait 48 hours in between painting and clear coating, and then apply the clear in a few fairly conservative coats, maybe 2-3 minutes apart. Not sure if its what is causing your issue but it seemed to solve it for me. even if the paint says its ok to recoat in 1 hour or 1 day etc, i still wait 48 hours.

Quick build question for you guys. I'm building a Christine fuzz and had a bit of an issue, but am not sure what it may be. The first thing I did was put a diode in backward. Ahahahaha. Fuck me. Flipped that bitch, LED works, tone bypasses, click that fucker on and I get a loud BAM. I think it's got to be a bad ground, so I'm going to run through the whole thing again with a fine tooth comb. I just wanted to see if that's usually what a bad ground does. Is make a loud popping noise.

I wanted to check all the caps but my fucking multimeter battery died on me. So I'll have to run to the store tomorrow for a new one.


Oh and I've trouble shot the shit out of this pedal so far. I made sure fifty times that I had the IC chip in right and the caps installed correctly....etc. Honestly if it's not a bad ground I'm thinking it's a bad cap. But until I get my multimeter going, I won't know for sure I guess.

jwar wrote:Quick build question for you guys. .

you wont be able to measure the capacitors properly if they are in the circuit, but on the plus side its very unlikely you blew one.

usually when you get a pop from switching an effect on or off it just means that there is some DC voltage at the effect output. when you get the meter back, i would measure that. Bypass the effect, connect the black terminal to ground and red terminal to the output of the effect pcb. It could be caused by a bad ground if say, the output volume pot was not grounded.

also, do you mean you put the same diode back in that was flipped? if its the schem here http://musicpcb.com/wp-content/uploads/ ... d-PDF2.pdf flipping the diode could cause it to burn out, i would use a new part. You can actually omit this diode as long as you hook up the DC jack with the right polarity. All it does is act like a fuse that will shunt all the current in an attempt to save the rest of the circuitry if the polarity of the supply is backwards. If the polarity is correct it does nothing.

Yea I used the same diode because I didn't have another on hand. Is there a way to test the diode without pulling it out of the pcb? Do diodes make any visible signs when burned out? I know resistors sometimes do as well as caps.

I'll measure the DC voltage as you suggested as well when I get my meter back up. Also I'll double check the ground on the volume pot. I know sometimes when you mess around with this shit a connection can come loose and you'll not even realize it.

Oh and thanks for the info btw! Really helpful!

multi_s wrote:

The4455 wrote:My third build, it's a Tone Pad "Dan Armstrong - Blue Clipper." It sounds like a Marshall set up kinda bass heavy, I love it. The clear coat came out kinda funny, but whatever, I'm still learning.

Looks pretty sweet. The lines seem pretty crisp this time around too.

I ended up with similar results when i started clear coating, or sometimes even just applying multiple coats of color. I try to wait 48 hours in between painting and clear coating, and then apply the clear in a few fairly conservative coats, maybe 2-3 minutes apart. Not sure if its what is causing your issue but it seemed to solve it for me. even if the paint says its ok to recoat in 1 hour or 1 day etc, i still wait 48 hours.

I think it's because I paint in my basement and it's maybe a bit too cold?

jwar wrote:Yea I used the same diode because I didn't have another on hand. Is there a way to test the diode without pulling it out of the pcb? .

It could have visible signs but don't rely on this. When you have your meter you can try to test it. I would first remove the IC from the socket. Then make sure the power is disconnected. Then set the meter to measure continuity (usually has a diode symbol). With the leads one way, i think black aligned with the lead closer to the stripe on the diode and red on the other it should beep. When you flip the multimeter leads it should not beep. If it is pooched it may beep both ways, or it may not beep at all. The key is that it should only show conductivity in one direction. Thats a happy diode.

good luck.

A happy diode is a healthy diode!

Totally not the diode. Got a good reading off of it. 637

So...one down...many, many to go. hahahaha. Fuck. lol

I'm going to check the grounds before I go any further. Just to make sure it's not just a bad solder spot.

The4455 wrote:

multi_s wrote:

The4455 wrote:My third build, it's a Tone Pad "Dan Armstrong - Blue Clipper." It sounds like a Marshall set up kinda bass heavy, I love it. The clear coat came out kinda funny, but whatever, I'm still learning.

Looks pretty sweet. The lines seem pretty crisp this time around too.

I ended up with similar results when i started clear coating, or sometimes even just applying multiple coats of color. I try to wait 48 hours in between painting and clear coating, and then apply the clear in a few fairly conservative coats, maybe 2-3 minutes apart. Not sure if its what is causing your issue but it seemed to solve it for me. even if the paint says its ok to recoat in 1 hour or 1 day etc, i still wait 48 hours.

I think it's because I paint in my basement and it's maybe a bit too cold?

This could be a factor. Could you have sprayed it on too thick? It's better to build up many light layers than a few thicker ones.

^^^^^^
what kind of effect is that,

5pots and 8 composants