DV Maxikorg Tuning drifts across octaves

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mmp
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Re: DV Maxikorg Tuning drifts across octaves

Post by mmp » Tue Sep 09, 2014 1:22 pm

where do you live?
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Musicwerks
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Re: DV Maxikorg Tuning drifts across octaves

Post by Musicwerks » Tue Sep 09, 2014 1:52 pm

In south east Asia,Singapore

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Re: DV Maxikorg Tuning drifts across octaves

Post by mmp » Tue Sep 09, 2014 4:35 pm

Sorry, I din't know any service techs in that part of the world.
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Re: DV Maxikorg Tuning drifts across octaves

Post by Musicwerks » Sun Oct 26, 2014 1:14 am

After month long of pain of pointless trouble-shooting and painful search (DV 800 is only producing 1 note on the lower deck)

I decided to send the DV 800 to Urban Music in Japan, Tokyo where Kaz specializes in Hammond organs repair.

While no techs were willing/ able to repair the DV800 in Singapore...the last one told me the process may take months

Kaz's technician took 2 hrs,

Replaced 2 deteriorated CV buffer FETs 2SK30A yellow
And added 1K resistor to CV balance circuit to bring it in tune.

His tech also tested the entire Synth to check for smooth operation...all done under a very affordable and reasonable pricing (about 400+ SGD)

The entire process took about 1 week. Now the DV 800 is now flying back from Tokyo to me...

I am looking forward to testing and playing my DV800.

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Re: DV Maxikorg Tuning drifts across octaves

Post by mmp » Sun Oct 26, 2014 2:14 am

Great news!
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Re: DV Maxikorg Tuning drifts across octaves

Post by Musicwerks » Sun Oct 26, 2014 9:32 am

Yes MMP, I agree...Finally a good piece of news amid all the unhappy things that had happened to the synth thus far

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Re: DV Maxikorg Tuning drifts across octaves

Post by Musicwerks » Wed Oct 29, 2014 2:37 pm

Musicwerks wrote:Hi all,

I recently acquired a 3rd hand Univox Maxikorg DV800 (I paid a bomb for it :cry: :cry: ).

The lower deck works fine. But the upper deck, no matter how I tune the left master and fine tune buttons, the notes go out of tune as I scale down the octaves.

In the upper deck, the 2nd C is out of tune with the middle C...

a) Is it a case of leaking capacitor? In need of re-cap? if so, how do I do it?

b) Or is there a master tuning-pot (what it that? something I read that needs a screwdriver to turn inside the synth, I know my newer synths had a tuning behind the synth) in the synth which I have to re-calibrate?

Be gentle with me, I am a newbie, everyone starts somewhere...and I am sincere to learn with a genuine question here to ask.

Many thanks.
Kaz of urban music in tokyo fixed the problem...now I am back to jamming...the maxikorg sounds better than before. I just hope the chips and repair stays okay for next dew years

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