Search found 45 matches

by synthchaser
Wed Aug 14, 2019 12:40 am
Forum: HELP!
Topic: Korg Trident MK1 capacitor 4700 uf 25v
Replies: 3
Views: 704

Re: Korg Trident MK1 capacitor 4700 uf 25v

kwillu wrote:
Wed Aug 14, 2019 12:06 am

yes i meant 4700 uf. Have bought on ebay now. Many thanks for the help !!
I wouldn't buy caps on eBay. Get them from a reputable electronics dealer like any of the ones Rasputin named above.
by synthchaser
Tue May 21, 2019 10:44 pm
Forum: HELP!
Topic: ARP Odyssey 2800 No Audio
Replies: 12
Views: 3486

Re: ARP Odyssey 2800 No Audio

Don't buy the 3080s or any parts for that matter on eBay. See if Jameco or some reputable seller still has any. If all else fails, I have a high quality replacement submodule on my site...
by synthchaser
Fri May 10, 2019 5:48 am
Forum: HELP!
Topic: ARP Odyssey 2800 No Audio
Replies: 12
Views: 3486

Re: ARP Odyssey 2800 No Audio

Assuming you can't scope out the filter in a test circuit, you might consider testing the JFETs out of circuit before you try replacing the OTAs.
by synthchaser
Sun May 05, 2019 11:12 pm
Forum: HELP!
Topic: ARP Odyssey 2800 No Audio
Replies: 12
Views: 3486

Re: ARP Odyssey 2800 No Audio

by synthchaser
Sun May 05, 2019 3:16 am
Forum: HELP!
Topic: ARP Odyssey 2800 No Audio
Replies: 12
Views: 3486

Re: ARP Odyssey 2800 No Audio

Check out my video:



LM301 is the most common failure in them. I'm working on 4 Odysseys in parallel now, two have the 4023 and both of them are bad and need to be excavated and repaired. You won't need to buy a replacement clone.
by synthchaser
Sun Mar 10, 2019 5:01 am
Forum: General Synthesizers
Topic: How many oscillators?
Replies: 5
Views: 3078

Re: How many oscillators?

Unless it's a Chroma where you can configure it to have 16 voices with 1 oscillator each or 8 voices with 2 oscillators each. :)
by synthchaser
Sat Mar 09, 2019 5:01 am
Forum: General Synthesizers
Topic: Modern alternative to Arp Omni 2
Replies: 5
Views: 3679

Re: Modern alternative to Arp Omni 2

Since original Omni 2s are difficult to come by are there any modern hardware alternatives to the Omni 2? I've got a bunch of Omni 2's, and I make them reliable! If you're interested in the real deal, hit me up on my website. Oh? can't you find them under "Synthesizers" on your site... I've not got...
by synthchaser
Fri Mar 08, 2019 2:36 am
Forum: General Synthesizers
Topic: Modern alternative to Arp Omni 2
Replies: 5
Views: 3679

Re: Modern alternative to Arp Omni 2

unknownid wrote:Since original Omni 2s are difficult to come by are there any modern hardware alternatives to the Omni 2?
I've got a bunch of Omni 2's, and I make them reliable! If you're interested in the real deal, hit me up on my website.
by synthchaser
Tue Feb 05, 2019 11:25 pm
Forum: General Synthesizers
Topic: Sequential Circuits Six Trak with a few problems
Replies: 1
Views: 1390

Re: Sequential Circuits Six Trak with a few problems

You'll probably need an oscilloscope to get anywhere with it.
by synthchaser
Sat Nov 03, 2018 6:10 am
Forum: General Synthesizers
Topic: ARP Explorer
Replies: 5
Views: 3455

Re: ARE Explorer

I bought the one listed at 595 OBO and have one other I've been waiting to get around to restoring. It's not working right and needs a restoration. There are really 3 values... Parts/repair like the comps you were shown. Used/100% working, and restored. I'd expect a used/working Explorer I to be aro...
by synthchaser
Mon Sep 24, 2018 12:09 am
Forum: HELP!
Topic: Oberheim OB-Xa noise generator problem
Replies: 3
Views: 3962

Re: Oberheim OB-Xa noise generator problem

MPS5172 is the same as 2N5172 which is still available. 2N3904 should also work but it has a different pinout (EBC vs ECB).
by synthchaser
Sun Aug 05, 2018 12:12 am
Forum: General Synthesizers
Topic: Inside the World's Worst Juno 106
Replies: 2
Views: 1791

Inside the World's Worst Juno 106

"Inside the World's Worst Juno 106" photo album on facebook

https://www.facebook.com/media/set/?set ... 705&type=3
by synthchaser
Fri Jul 13, 2018 5:51 am
Forum: General Synthesizers
Topic: What's a good price to pay for a Jupiter 8 these days?
Replies: 13
Views: 3440

Re: What's a good price to pay for a Jupiter 8 these days?

Good for who? The buyer or the seller? :)
by synthchaser
Sat Jun 16, 2018 12:45 am
Forum: HELP!
Topic: Micromoog trimpots replacement
Replies: 6
Views: 3148

Re: Micromoog trimpots replacement

In general, I find that when a trimmer gets old, the carbon track gets damaged (indented, maybe?) where the wiper has been parked for years. Then you go to make a slight adjustment and you have erratic behavior close to the old parking spot of the wiper.
by synthchaser
Tue Feb 27, 2018 11:06 pm
Forum: General Synthesizers
Topic: How does a ladder filter work?
Replies: 3
Views: 2569

Re: How does a ladder filter work?

I'd recommend reading the active filter cookbook by Don Lancaster. A great book that covers active (transistor-based) filters in detail.