Hi Dan Thanks for the info thats very interesting. I know the external supply is ok because i use it with my working poly 800. Im now thinking about checking the internal power supply and am quite handy with a soldering iron. Do you know what i should test or replace, i have downloaded the schematics but dont know the best place to begin. Regards Neil --- In korgpolyex@yahoogroups.com, Dan Brewton <dannobe123@y...> wrote: > Hi......... The next highest Probability, to me, is the Power Supply within the Unit.... > These do fail occasionally.....Internally there is both a +5 volt and -5 volt regulated > supply system ,derived from the 12DC volts input externally......sometimes people get lazy and plug most anything into the jack, and , wallah, its toast.......but one saving grace is this one dies without allowing massive over-voltage to the sensitive logic circuits that need no more than 5 volts.....usually......cant know for sure until the supply is fixed, then you get to discover if the 'next layer' survived......These Power supplies are a bit difficult to repair... known as "switchers" .....pretty tricky......some guys I know just gut it out and > replace with external supply, regulated +/- 5 volts.......naturally you need the schematics > for all this....... let me know ! > Cheers > Dan
Message
Re: Broken poly 800 :(
2003-11-29 by win_uk_2001