Korg Poly800/EX800 Users

Thanks for the suggestions. I took a look, sequencer was disabled. Perhaps the switch is bad? I'm not sure how to test it, it has 4 main pins, then 14 smaller pins. I'm using a multimeter, but can't figure out what pins the switch is effecting.

--- In korgpolyex@yahoogroups.com, "backshall1"  wrote:
>
> That sound like the sequencer "enable" switch is on, plus you have no
> patches in memory. The sequencer switch on the back should be set to
> "disable" unless you are recording a sequence. Since this is an original
> Poly 800, there are several versions, some with a CR2032 lithium cell inside
> to hold the sound patches in memory when it is turned off, and some without.
> Since you just changed the battery, the memory will be empty or really
> random.
> 
> 1) Make sure the sequencer is switched to disable.
> 
> 2) You need to reload the factory patches or program one of your own for
> testing purposes.
> 
> If you've never loaded a patch audio file (.wav) on the "Tape In" jack of an
> early 80's synth, you may want to start by just programming one of your own.
> Unfortunately there are 50 parameters and you need to make sure all of them
> are set at something reasonable to get a sound. You might start by setting
> the Attack, Decay and Release to 0 and the Break P, Sustain to maximum (31)
> for Deg1, Deg2 and Deg3. I don't think the Slope matters when set this way.
> If you hear noise, then alter parameter 33 (Noise level) to see if it makes
> a difference. Oh, and parameter 41 (Cutoff) should be turned up full during
> this testing.
> 
>  
> 
> If the sequencer switch is really the main problem, then you should be able
> to get some sound out of it and we can help you get the factory patches
> loaded if you need help.
> 
>  
> 
> Don Backshall
> 
>  
> 
>   _____  
> 
> From: korgpolyex@yahoogroups.com [mailto:korgpolyex@yahoogroups.com] On
> Behalf Of cc0919ship
> Sent: Saturday, January 19, 2013 9:32 PM
> To: korgpolyex@yahoogroups.com
> Subject: [korgpolyex] Frozen Poly 800
> 
>  
> 
>   
> 
> Hello all,
> 
> I'm wondering if you can help me out. I recently acquired a broken Poly 800
> (original, not MKII.) It powers up, but immediately after powering up, the
> screen reads "1.8 50 01." Buttons on the front panel do nothing, and keys do
> not make noise. If I turn up the volume the whole way, I can hear the filter
> sweeping up and down. Here's where it gets interesting - I plugged in a MIDI
> keyboard, and when I play notes with the MIDI keyboard, the 800 makes static
> noises, and the last value on the screen increments by one.
> 
> I opened it up, checked the tactile switches (all seem fine.) I also
> replaced the internal CMOS battery. I was under the impression that MKI 800s
> didn't have this, so the main board may have been replaced by someone along
> the line.
> 
> Anyway, has anyone had a problem like this and could help me out? It is
> potentially one of the ICs, but I have no idea how to test them.
> 
> Thanks,
> 
> Christian
>