Search found 1093 matches

by djs
Wed Jan 20, 2021 1:04 pm
Forum: Music Tech DIY
Topic: Power issue!
Replies: 12
Views: 160

Re: Power issue!

Without a meter it's hard to tell, but I'd be willing to bet something is off with the meanwell. Either it's wired wrong, or it's -12v rail is grumpy.

FYI- I'm not sure where you're at, but I use a multimeter that I got for 6$ for my DIY stuff.
by djs
Wed Jan 20, 2021 12:21 pm
Forum: Music Tech DIY
Topic: Power issue!
Replies: 12
Views: 160

Re: Power issue!

What are you using for the wall power? Is it a wallwart, or something else?
by djs
Tue Jan 19, 2021 5:04 pm
Forum: Music Tech DIY
Topic: A couple of bench power supply questions
Replies: 5
Views: 206

Re: A couple of bench power supply questions

Forgot to mention- Parallel would be if you wanted to create two different supply voltages- like +12v and +5v, but with no negative... just the positive and ground.
by djs
Tue Jan 19, 2021 5:03 pm
Forum: Music Tech DIY
Topic: A couple of bench power supply questions
Replies: 5
Views: 206

Re: A couple of bench power supply questions

What I'm wondering is about running it all for Eurorack - I imagine I'll run the two 12V channels in series and treat their junction as ground, right? Then, can I then connect the 5V's negative pole to said ground to make sure they all have the same ground? I'm new to bench supplies but assume that...
by djs
Mon Jan 18, 2021 12:18 pm
Forum: Buchla, EMS & Serge
Topic: Buchla-Style Banana Touch Keyboard Clone?
Replies: 11
Views: 477

Re: Buchla-Style Banana Touch Keyboard Clone?

There was this a while ago, but it fell off the map:

https://www.modulargrid.net/u/other-unk ... ouchplate-
by djs
Sat Jan 09, 2021 9:00 pm
Forum: Music Tech DIY
Topic: PROGUE - Analog mono synth - AUDIO DEMO
Replies: 91
Views: 5077

Re: PROGUE - Analog mono synth - AUDIO DEMO

Yes! Any estimate on cost of the boards?
by djs
Tue Jan 05, 2021 1:46 pm
Forum: Artist Discussion
Topic: Ravey Go Happy :love:
Replies: 13
Views: 240

Re: Ravey Go Happy :love:

HR3 Clubnight mixes on tape wasn`t less party than being in the club on the dancefloor. Was in college from 94-98, and a friend of a friend got me copies of some of the HR3 clubnight mixes on tape. These got me through a lot of hard times. I know they have an archive someowhere... I should go downl...
by djs
Mon Jan 04, 2021 11:00 am
Forum: Music Tech DIY
Topic: Choosing capacitor max current
Replies: 7
Views: 184

Re: Choosing capacitor max current

You'll never go wrong with using a higher than planned voltage rating- ie. 50v in your question above. Also, depending on the circuit, it's unlikely that you'll have a cap that is between a 24v swing (+12-> -12), but your logic is sound. If you go with 50V for everything, you're unlikely to have any...
by djs
Thu Dec 31, 2020 11:34 am
Forum: Music Tech DIY
Topic: Steda Electronics SR-909 Full kit for $909
Replies: 104
Views: 11679

Re: Steda Electronics SR-909 Full kit for $909 last 3 days!

If we want to buy just the case, is it possible? If so, what would be the cost?
by djs
Wed Dec 23, 2020 9:51 am
Forum: Music Tech DIY
Topic: Noob With a Busted Waldorf 2-Pole Filter - Anything I Can Do?
Replies: 9
Views: 199

Re: Noob With a Busted Waldorf 2-Pole Filter - Anything I Can Do?

Ok- so that rules out the jacks. It might be one of the op amps on the incoming or outgoing signal. Do you have a picture of the interior?
by djs
Wed Dec 23, 2020 9:47 am
Forum: Music Tech DIY
Topic: Noob With a Busted Waldorf 2-Pole Filter - Anything I Can Do?
Replies: 9
Views: 199

Re: Noob With a Busted Waldorf 2-Pole Filter - Anything I Can Do?

If you have the Activate switch off, does it pass through the original signal? At the same volume?
by djs
Tue Dec 22, 2020 8:52 am
Forum: Music Tech DIY
Topic: Modular Addict taking a break?
Replies: 53
Views: 3304

Re: Modular Addict taking a break?

You might be able to grab it off archive.org? I just tried, but their page is not working.

FYI- Modular addict is definitely up and running. Just got an order from them in the mail on Saturday.
by djs
Sat Dec 19, 2020 9:03 am
Forum: Music Tech DIY
Topic: Any clue what this switch is? (Quasimidi Rave-o-lution 309)
Replies: 6
Views: 210

Re: Any clue what this switch is? (Quasimidi Rave-o-lution 309)

Batchas- the ones I got for my MidiALF sequencer have you buy/install the led separately. I don’t think they come as one unit.

Glad you found a solution!
by djs
Fri Dec 18, 2020 1:55 pm
Forum: Music Tech DIY
Topic: Any clue what this switch is? (Quasimidi Rave-o-lution 309)
Replies: 6
Views: 210

Re: Any clue what this switch is? (Quasimidi Rave-o-lution 309)

Not exactly the same switch, but these are kind of close?

https://www.digikey.com/en/products/det ... gCIgC6AvkA

it's probably a variation on this part.
by djs
Mon Dec 14, 2020 2:29 pm
Forum: Music Tech DIY
Topic: Steda Electronics SR-909 Full kit for $909
Replies: 104
Views: 11679

Re: Steda Electronics SR-909 Full kit for $909 last 3 days!

Not the full 909, but I got a sequencer pcb (plus components) from him a while ago. Well packed and looks great!
by djs
Sun Dec 06, 2020 7:58 pm
Forum: Music Tech DIY
Topic: techs in America
Replies: 1
Views: 131

Re: techs in America

To fix something or build something? And where are you located?
by djs
Tue Nov 10, 2020 9:10 am
Forum: Music Tech DIY
Topic: DIY Trade Thread [ Parts, PCBs, Panels ]
Replies: 873
Views: 154609

Re: DIY Trade Thread [ Parts, PCBs, Panels ]

This is a set of 4 pcbs that can be used to make LED ring type controllers, plus 5 midibox pcbs to make it work (DIN R5, DOUT R5, MBHP_AINSER64, 2xCORE_LPC17). Also included is some resistor networks that I think are part off the midibox pcbs (I haven't checked). Nothing is soldered in to any place...
by djs
Mon Nov 09, 2020 12:25 pm
Forum: Music Tech DIY
Topic: Korg DW8000 lost screws after repair, help finding sizes?
Replies: 3
Views: 75

Re: Korg DW8000 lost screws after repair, help finding sizes?

Guess I figured the manuals online wouldn't have screw sizes for whatever reason. Lesson learned. Some do, some don't. I like the ones that mention all the physical components, because sometimes you need to replace some plastic part, and it's easier when you have the exact part # :) Good luck fixin...
by djs
Mon Nov 09, 2020 11:43 am
Forum: Music Tech DIY
Topic: Korg DW8000 lost screws after repair, help finding sizes?
Replies: 3
Views: 75

Re: Korg DW8000 lost screws after repair, help finding sizes?

Service manual here shows the sizes on pages 12-13

http://manuals.fdiskc.com/flat/Korg%20D ... Manual.pdf

Also this might be useful:

http://www.korgforums.com/forum/phpbb2/ ... 9adbb5787a


Looks like they're all various metric sizes
by djs
Tue Oct 20, 2020 6:39 pm
Forum: Music Tech DIY
Topic: Important lesson on how to solder
Replies: 5
Views: 292

Re: Important lesson on how to solder

To the OP- these are good articles to read on soldering/wire joining:

https://nepp.nasa.gov/docuploads/06AA01 ... 8739.3.pdf


https://nepp.nasa.gov/files/27631/NSTD87394A.pdf


Note- these will make you cry :)
by djs
Wed Oct 14, 2020 11:36 am
Forum: Buchla, EMS & Serge
Topic: R*S Variable Slope capacitors
Replies: 18
Views: 888

Re: R*S Variable Slope capacitors

I don't have one of these, but what's going on here?
2020-10-14 11_34_57-IMG-0604.JPG (JPEG Image, 2960 × 2960 pixels).png
by djs
Thu Oct 08, 2020 7:37 am
Forum: Buchla, EMS & Serge
Topic: buchla 296 diy?
Replies: 16
Views: 866

Re: buchla 296 diy?

Is EMS still a going concern? Considering their front page states "Front panels for some modules are low until the next batch is available at the end of 2019."
by djs
Wed Oct 07, 2020 9:38 am
Forum: Music Tech DIY
Topic: PAiA Fatman - notes stuck on
Replies: 145
Views: 1063

Re: DIY Synth - notes stuck on

Based on how the logic is explained here on pages 3+4, it looks like you have an issue around the DAC network:

https://www.paia.com/manuals/docs/9308- ... manual.pdf

I'm not an expert on this, but I'd check the solder joints around IC9 (CD4052) first
by djs
Fri Oct 02, 2020 6:46 pm
Forum: Music Tech DIY
Topic: PROGUE - Analog mono synth - AUDIO DEMO
Replies: 91
Views: 5077

Re: PROGUE - Analog mono synth - AUDIO DEMO

looks great! How small are the SMD DACs? 0805? 0402?
by djs
Wed Sep 30, 2020 7:27 am
Forum: Buchla, EMS & Serge
Topic: Buchla 292c - Filter opens to quickly - How to fix?
Replies: 17
Views: 843

Re: Buchla 292c - Filter opens to quickly - How to fix?

Quite possibly the trimmer. Does it bleed noise even when fully closed? Also, can you verify that it's the same kind of pot on channel 4 as the other ones?

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