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Just had a guitar sell, and had to delay shipping because I've been home with my daughter who is ill. I have what I need, but have more packing materials at work. Guy requests a refund because he needed it this week (didn't say that ever), and that he's nervous due to delays. How about...

It’s probably not great, but I have a simple 20W stereo power amp running two cabs. If it sounds good there, I usually can get it sounding really good with the rack mount preamp Marshall I built. It’s simple right now but will really get going when I get the preamps done (when there’s time …...

That Harp Attack screams Tube Driver clone without the AC coupling from the mains (using direct +18V power supply)

Seconded with jimilee -- forcing yourself to find the problem makes solving other stupid problems that will show up in the future easier. Don't ask me how I know: I keep making stupid errors.

/checks on pile of 90% completed PCBs I didn’t see the signs of it being made by someone intelligent. So Mouser, diodes pwease.

That looks much better on camera than on the lid. I think Ive used the ColorShift on another project. Thanks for the info!

@Diynot I’m curious to the color that you used. It’s a great color.

Update on DanEcho: using most troubleshooting things I can find and making AI run through some places to look with this type of chip (not one I’ve done before), I have another Pt2395 on order. Desoldering 40 pins… Ff

I both like this and don't like this. :)

I mean, as long as you can lift 5-10 pounds, you can generally pick one up pretty easily.

It arrived today: Evidently it was working, person replaced quite a few opamps, etc. and it worked for a while. Then suddenly died. I'm wondering if I need to pull the PT2395 and/or 256K ram chip. Guess all the other projects can wait a while..

I feel like I've lost my fastball at work. Since I'm in education, usually I'm pretty on top of things and can make things interesting (I'm not directly in the classroom as much as I was - no, not an administrator), especially in science. But the past couple years have just been blah at times...

I’m slowly putting the schematic together to build a board. Should I go 1590BB size or try to go stacked 125B? Personally, I’m aiming for stacked 125B, but I’ve never done that before. Thoughts?

When I read the symptoms of how the potentiometers didn’t quite act right, it makes me wonder if the grounding isn’t solid. Just a thing to check. And don’t shotgun replace the electrolytics. It was only a thought because there are a handful of 10uF connected via a resistor to ground on the...

I did some thinking. I’m wondering if the grounding isn’t solid - as in it’s not all connected together or not well grounded to the chassis. Barring that, I would think a bad capacitor somewhere, like a bad electrolytic

Once you start fooling with stripboards, you’ll start getting into the hard stuff: perfboard, wire wrapping, and dead bugging your prototypes.

Weird shot in the dark - are those ceramic capacitors okay? Sometimes I’ve had leads pull and split the capacitor. Looking at the schematic and where there’s issues, there’s 50pf caps there. Other stab at it - what about the electrolytics? Are they good? Correct orientation? Just a couple...

That’s why when i make pedals (and amps), there’s no visual gimmicks - just haphazardly constructed and 95%completion (because who needs knobs …. Or labels?). And it still proves I’m a terrible guitar player.

That’s true (forgot to consider that). I was thinking amps that are similar to where Marshall puts their EQ - Hiwatt, etc. It’s more of an exercise in thinking and experimenting. Probably head in the clouds thinking, but makes the two interconnected hamster cages operating in opposite directions...

So, this got me thinking if this overall topology can be tuned to other amps. I will need to grab a breadboard and some frequency sims.