Korg Poly800/EX800 Users

Flickering out might indicate a power supply problem, where pressing a  
button puts an additional load on the defective/underpowered power  
supply and causes a CPU reset. Have you tried running on batteries or  
using a different (larger) power supply? -pc


On Nov 4, 2009, at 10:30 AM, crustypaul wrote:

> I just installed the Hawk 800 kit into my poly800 mkII and it was  
> all working perfectly. I installed the kit and started it up, then  
> flashed it with the sysex files, which also seemed to go fine. I  
> then reatarted it and pressed a key and seemed to get some kind of  
> sound, but then every part of the display lit up at once and it all  
> locked up.
>
> Now when i turn the thing on every part of the display lights up  
> brightly for about half a second and then appear to just go blank,  
> although the whole thing does appear to be lit very dimly if you  
> look carefully.
>
> Does anyone have any ideas on what the problem might be? I've  
> checked all my soldering and made sure everything is connected where  
> it should be.
>
> The annoying this is that on a couple of occassions the poly has  
> started up properly and then the screen has flickered out as soon as  
> i tried to use it, which might indicate an intermittant problem.
>
>