Recent content by SteveScott

Thank you so much!

I see several post about the Sproing Deluxe Reverb, but on the website it says build documentation coming soon.... Am I missing something? Or can some one post the build documentation? Thanks for any help.

This is way too long to wait, but I did finally figure this out. It turns out that the PCB had no continuity from the negative side of C7 to R10. I ran a jumper wire on the back side of the PCB and presto, works beautifully.

After thinking about it a bit, I'm guessing this is where my problem likely lies. Any thoughts? Thanks again.

This took way longer than I expected, but finally got around to this. There is no signal at pin 14 or 16. Just to be thorough, there is no signal at any of the pins on the PT2399. There is a very faint high pitch at pin 9 and some odd sounding echo at pin 15. There is also signal on the TL072 at...

The PT2399 came from Tayda. I've made other delays with the same chip from Tayda with no issues, but there certainly could have been a bad one in the bunch. I think it's more likely that I may have damaged it on the install (if there is a problem with the chip) since I didn't socket it. And...

Ok, now that I got that electrolytic cap replaced here's an updated picture. (I should mention that I'm still having the same problem, and I truly appreciate all the help.)

I cleaned things up a bit, added some solder {including the spot chongmagic pointed out, and still getting same results. Attached are a couple of pictures. I have more pictures that may need to be compressed a bit in order to upload. And now that I uploaded these pictures I see at least one...

Thank you for that. I'll give that a try. Two of the pots are soldered from the top side and two are soldered from the bottom, so it may appear worse than it is. However, I will clean them all up and flow some more solder in there. Also, I'll try to get a better picture with daylight.

I'm getting some odd behavior out of my cataclysm delay. All four controls seem to be working, but there is no echo. If I turn the feedback up, it will self oscillate. And while the oscillation is going on, the time, mix and tone controls do what you would expect them to do. But there is no...

I built one of these in the original format, with a toggle to be able to use germanium diodes. It sounds OK, but the entire sweep of the tone pot does not produce a massive difference, I mean there is a difference from all the way down to all the way up, but it's not as drastic a difference as...

I just replaced C4. All good! Thank you.

The ic was out for the resistance readings, in for the voltage.

Everything measures the same even after the alcohol cleaning.

https://photos.app.goo.gl/xmgudeo6AbzwQrvP9 All cleaned up. I check the resistance between pin 1 and ground prior to cleaning. It showed 20K with the drive down and 128K with drive up. And the voltages were unchanged prior to cleaning. I have not checked anything after cleaning yet, next on my list.