Page 1 of 1
ARP Omni mk2 problem
Posted: Fri Aug 29, 2008 10:06 pm
by radek tymecki
Hi there!
There is strange problem with this stringmachine. Everything is fine with bass section. But when i change sound into synth/string i can hear clearly that c#2 is sustained and sounds all over time. I've checked keyboard and everything seems to be ok? So what can it be? dead chip or what?
Re: ARP Omni mk2 problem
Posted: Sat Aug 30, 2008 4:31 pm
by sam
You have to replace the AR tantalum capacitors for the faulty keys....
They are the blue 6.8 mirofarads.
Re: ARP Omni mk2 problem
Posted: Sun Aug 31, 2008 9:14 pm
by radek tymecki
not 22uF ??
Re: ARP Omni mk2 problem
Posted: Sun Aug 31, 2008 9:22 pm
by sam
I will have a look in mine although there is one for each key ...On the circuit under the keyboard.
It's best to replace them all but it's quite tricky.
Re: ARP Omni mk2 problem
Posted: Sun Aug 31, 2008 11:01 pm
by radek tymecki
ok then i'm waiting for some photos or tutorials
Re: ARP Omni mk2 problem
Posted: Mon Sep 01, 2008 9:49 pm
by sam
I will help you but for now here is a nice link.22uf is correct ..I replace so many it gets confusing..
http://peterunderdog.com/arp/
Re: ARP Omni mk2 problem
Posted: Sat Sep 06, 2008 7:56 pm
by radek tymecki
I've exchanged all capacitors... Now bass sounds are dead.... Any clue?
Re: ARP Omni mk2 problem
Posted: Sat Sep 06, 2008 8:41 pm
by sam
radek tymecki wrote:I've exchanged all capacitors... Now bass sounds are dead.... Any clue?
I presume that the string section problem has been fixed..?
Replacing the caps won't affect the bass section...So check for anything not connecting properly...
Check the bass output on the rear...
Just feels like a bad contact that can happen when working on old synths.