Search found 38 matches

by solidstatedisaster
Thu Mar 29, 2018 12:07 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

My preamp/envelope follower is super quiet, and I can't get it to output cv, is that normal for these models?
by solidstatedisaster
Sat Mar 24, 2018 10:05 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Update on the continuing saga. I followed Dave's recommendation, and (for now) my complex oscillator is at normal volume, with normal functions. I wish I knew what I did to fix it, but I reflowed so many connections, I could have been anything. The wave selection was the stupidest thing, and I am su...
by solidstatedisaster
Thu Mar 22, 2018 10:24 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Alright, I spoke too soon. I had 2 days of a perfect working 208, recorded a few YouTube videos, I was having a blast. I turned it on last night, and the complex oscillator was super quiet again, with the same ground hum. I changed out the slider, that didn't change anything. I still am not convince...
by solidstatedisaster
Tue Mar 20, 2018 8:29 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

:tu: Is the "program selector switch" the "control" one ? Can you please explain how it affected the CO wave ? As far as I can tell, it was one leg of the switch that activates the program card wasn't properly soldered, and it caused the CO waveform knob to not work, and the only way to activate it...
by solidstatedisaster
Mon Mar 19, 2018 9:43 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Then I would suspect the waveshape pot or switch. If are faulty, reflow won't help. You can test the switch with a continuity test. I'm afraid you maybe also changed something else on card 10 although it was not intentional. :mrgreen: Double check it. Finally figured out both of my issues! The wave...
by solidstatedisaster
Fri Mar 16, 2018 9:25 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Okay, it is not the pot that is the issue of the wave selection, nor is it the switch, so I am sort of at a loss on that. I have replaced all the chips on card 8 and 9. It wasn't a bizarre short from the new shielded cable I used, because i removed it. The gates were working perfectly before I took ...
by solidstatedisaster
Fri Mar 16, 2018 4:24 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Then I would suspect the waveshape pot or switch. If are faulty, reflow won't help. You can test the switch with a continuity test. I'm afraid you maybe also changed something else on card 10 although it was not intentional. :mrgreen: Double check it. I dont have any extra switches lying around, bu...
by solidstatedisaster
Fri Mar 16, 2018 3:29 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

The loudness problem may also be in LPG1 (card 10). Did you try and replace the waveshape pot and switch ? I tested the pot with a multimeter and it seemed fine. I reflowed the switch, the entire card pins for 8 and 9, all the resistors around the switch and pot, and it still seems to be an issue. ...
by solidstatedisaster
Fri Mar 16, 2018 11:53 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Alright, I somehow managed to mess up something on my complex oscillator while changing my acrylic panel to my beautiful new 208p panel. The Mod osc still is fine, but the complex is very quiet, here is a vid of it https://www.dropbox.com/s/ffup38dbka2w376/video-1521205704.mp4?dl=0 . I still cant tr...
by solidstatedisaster
Tue Mar 06, 2018 10:04 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

I never fully figured out where the bad solder joint is on my complex oscillator, but I have got it to where I can press on my acrylic panel, and it fixes the bug. A buddy of mine brought over his Octotrack last night, and we sampled and jammed for a few hours, and made a 80's film soundtrack. I lov...
by solidstatedisaster
Wed Feb 28, 2018 8:39 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

[/quote]
Make sure the control switch is in "front panel" position. I experienced similar issues when this switch was in the "both" or "prog-board" position without anything connected to the interface slot...[/quote]

That is good to know, I didn't try that.
by solidstatedisaster
Wed Feb 28, 2018 8:36 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

For issue 2: have you tried adding decoupling caps to most of the ICs on the sequencer card? This seems like a common issue. Was Papz tip the solution for the random? I haven't tried the decoupling caps, someone will have to break that down with further detail for me to try it. I am sure Papz solut...
by solidstatedisaster
Tue Feb 27, 2018 10:18 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Alright, got the Random fixed! In the interim, I developed two issues. Issue 1) the square wave on the complex oscillator and the shape knob have stopped working, for the most part. Every once and a while it comes back on, and I get it, but then I twist the shape knob, and it goes back to a sine wav...
by solidstatedisaster
Mon Feb 26, 2018 12:29 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Got my 208p working today. The Random output is not functioning correctly, but everything else seems to be working right. It is going to take a while to calibrate it, but I am very excited to get it tuned.

Here is my first doodle
by solidstatedisaster
Fri Feb 23, 2018 12:21 pm
Forum: Eurorack Modules
Topic: Korb Modular - Folder Dual VCO
Replies: 34
Views: 4721

I have been having issues trying to calibrate my Folder. I did the dumb thing and built the entire module all at once, and had faults all over the place. After a few reflows and a couple replacement caps, I got the switching function to work, I got the wave shapes from the test points, but the modul...
by solidstatedisaster
Tue Feb 20, 2018 10:58 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

papz wrote:It's in the build notes.
http://www.portabellabz.be/images/208/2 ... 0notes.pdf
I have read that, I guess Dave Brown's page made it seem like there were more changes. I am very excited to wrap this up and start making music!
by solidstatedisaster
Tue Feb 20, 2018 9:41 am
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

I was wondering how far everyone is on their builds? I am 2 components (from ebay) away from being complete with parts, and one panel away from wiring everything together. I was also wondering what sort of modifications we should be expecting to make on these boards? It looks like Roman's versions h...
by solidstatedisaster
Sun Feb 11, 2018 11:59 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Image I missed the panel from EMS, so I decided to make my easel look like the prototype. Who knows, maybe I will make mine crazy custom looking, but this will get me going.
by solidstatedisaster
Tue Feb 06, 2018 2:55 pm
Forum: Music Tech DIY
Topic: 208p build thread (papz's PCBs)
Replies: 974
Views: 87570

Re: Panel files for 208

Since I can't seem to find anyone offering panels for the 208 right now, I was wondering if anyone has drawing files (especially drilling centres) for the 208. Formats can be .svg .ai .dxf ... anything editable. I'm not looking to make a clone... I actually want to customize the look of the panel f...
by solidstatedisaster
Sun Jan 07, 2018 9:59 am
Forum: General Gear
Topic: Arturia DrumBrute
Replies: 316
Views: 51862

Has anyone cracked one of these open and modified It?
by solidstatedisaster
Sat Jan 06, 2018 3:22 pm
Forum: Buchla, EMS & Serge
Topic: Buchla Tsnm - touch sensing note memory
Replies: 127
Views: 17245

I want one of these, too!
by solidstatedisaster
Tue Oct 04, 2016 1:52 pm
Forum: Music Tech DIY
Topic: [ORDER] p0wr, a switchable Euro power inlet/outlet
Replies: 20
Views: 4575

awesome idea!!! This fixes a lot of problems.
by solidstatedisaster
Thu Apr 28, 2016 12:10 am
Forum: Music Tech DIY
Topic: Two Thousand Six Hundred (TTSH) Ver.2 General build thread
Replies: 1508
Views: 101464

Awwww... Just gone to order the parts from mouser, and I can't get the BOM page to load? I had this copy/pasted from earlier: https://www.mouser.co.uk/ProjectManager/ProjectDetail.aspx?AccessID=4998691276 Anyone got a working link? Your link worked for me, but here is the one I used https://www.mou...
by solidstatedisaster
Thu Apr 21, 2016 10:20 pm
Forum: Music Tech DIY
Topic: Two Thousand Six Hundred (TTSH) Ver.2 General build thread
Replies: 1508
Views: 101464

Awwww... Just gone to order the parts from mouser, and I can't get the BOM page to load? I had this copy/pasted from earlier: https://www.mouser.co.uk/ProjectManager/ProjectDetail.aspx?AccessID=4998691276 Anyone got a working link? Your link worked for me, but here is the one I used https://www.mou...
by solidstatedisaster
Sun Apr 17, 2016 5:50 pm
Forum: Music Tech DIY
Topic: Two Thousand Six Hundred (TTSH) Ver.2 General build thread
Replies: 1508
Views: 101464

I hope it isn't the Dual FET, I bought that stuff from Thonk in a rare parts kit. Again, check to make sure the noise Voltage level is 20V point-to-point. Some of the "corrections" to the distorted noise issue cause the Voltage level to be much lower. I can verify that a noise Voltage level of 10V ...

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