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.
Search found 1093 matches
- Wed Jan 20, 2021 1:04 pm
- Forum: Music Tech DIY
- Topic: Power issue!
- Replies: 12
- Views: 160
- 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?
- 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.
- 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...
- 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-
https://www.modulargrid.net/u/other-unk ... ouchplate-
- 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?
- 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...
- 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...
- 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?
- 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?
- 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?
- 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.
FYI- Modular addict is definitely up and running. Just got an order from them in the mail on Saturday.
- 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!
Glad you found a solution!
- 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.
https://www.digikey.com/en/products/det ... gCIgC6AvkA
it's probably a variation on this part.
- 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!
- 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?
- 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...
- 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...
- 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
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
- 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
https://nepp.nasa.gov/docuploads/06AA01 ... 8739.3.pdf
https://nepp.nasa.gov/files/27631/NSTD87394A.pdf
Note- these will make you cry

- 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?
- 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."
- 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
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
- 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?
- 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?