ARP Omni mk2 problem

radek tymecki · Post by **radek tymecki** » Fri Aug 29, 2008 10:06 pm

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?

sam · Post by **sam** » Sat Aug 30, 2008 4:31 pm

You have to replace the AR tantalum capacitors for the faulty keys....

They are the blue 6.8 mirofarads.

radek tymecki · Post by **radek tymecki** » Sun Aug 31, 2008 9:14 pm

not 22uF ??

sam · Post by **sam** » Sun Aug 31, 2008 9:22 pm

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.

radek tymecki · Post by **radek tymecki** » Sun Aug 31, 2008 11:01 pm

ok then i'm waiting for some photos or tutorials

sam · Post by **sam** » Mon Sep 01, 2008 9:49 pm

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/

radek tymecki · Post by **radek tymecki** » Sat Sep 06, 2008 7:56 pm

I've exchanged all capacitors... Now bass sounds are dead.... Any clue?

sam · Post by **sam** » Sat Sep 06, 2008 8:41 pm

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.

ARP Omni mk2 problem

ARP Omni mk2 problem

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