Korg Poly800/EX800 Users

In particular, set parameters 17 and 41 as high as they will go and parameter
51 to zero.

If that doesn't help, then worry about damaged hardware.

I have a korg poly-800 keyboard and it seems that the only thing i 
can get out of it is a very faint whooshing every once3 in a 
while..this is the original 1984 model model #000193 it is the 193 rd 
made and would love to get it cracking..it was owned by my best 
friend who had it made for him......weird revered keys..need help 
trying to get this thing running..I am well vrsed in electronics but 
not in synthesis technology.......HELP!!
PLease

Yeah.....and especially try different Voice-Patch Number other than "11" !!!!!
You have the typical dead-to-non-existant-BATTERY, i.e. the Internal one
soldered to the Main Circuit Board, with the Processor.......what is required there
is the 3.5 Volt type....you can solder in its place, an Battery Holder so yu can change it out again, in the future. I've repaired several of these Machines, so if you
need further assistance, then reply......also, if you dig through the FILES and Pictures section of this GROUP, you can find the Manual and Schematics...
Cheers,
Dan
 Skunkride <skunkride@...> wrote:Try to program some patches - the situation you describe is typical to a Polywith erased memory & no patches... mess around with the different parameters& see if you can get some sound out of it !----- Original Message ----- From: " title=archangel82570@...>jeff and christine <archangel82570@...> To: korgpolyex@yahoogroups.com Sent: Friday, January 31, 2003 12:10 AMSubject: [korgpolyex] HELP!! MY POLY IS DYING!! A whooshing noise and thats it folks
I have a korg poly-800 keyboard and it seems that the only thing i 
can get out of it is a very faint whooshing every once3 in a 
while..this is the original 1984 model model #000193 it is the 193 rd 
made and would love to get it cracking..it was owned by my best 
friend who had it made for him......weird revered keys..need help 
trying to get this thing running..I am well vrsed in electronics but 
not in synthesis technology.......HELP!!
PLease


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I had a similar thing happen, along with no display.
I'm suspecting the 5V regulator rather than the
battery. Would anyone know the callout (U-something or
Q-something)on the schematic, or whether it's a 7805
or what?

Hoping to revive it,
the manicmaestro


--- trip@... wrote:
> In particular, set parameters 17 and 41 as high as
> they will go and parameter
> 51 to zero.
> 
> If that doesn't help, then worry about damaged
> hardware.
> 


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Last day of January !!  :)
Well, he made no mention of the display being bad , right !? 
Better hope there is 5 Volts developed within, cause its NOT just a simple Three-Terminal Regulator !!!
The internal power is a custom SWITCHER......supply that converts the raw input at the rear and regenerates a highly stable five volts...... I do not recommend any of you guys attempting repair of that......very tricky, I know I've repaired enough of those little beasties to forwarn you....! 
 
 Mike Nelson <manicmaestro@...> wrote:I had a similar thing happen, along with no display.
I'm suspecting the 5V regulator rather than the
battery. Would anyone know the callout (U-something or
Q-something)on the schematic, or whether it's a 7805
or what?

Hoping to revive it,
the manicmaestro


--- trip@... wrote:
> In particular, set parameters 17 and 41 as high as
> they will go and parameter
> 51 to zero.
> 
> If that doesn't help, then worry about damaged
> hardware.
> 


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Hello,

I also think you should try some soundpatches. If it won't work, you can find the service manual and the owners manual on the www.
(If not, I can mail it to you).

Best wishes,

Michael

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