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koprg kr33 power supply replacement help needed

koprg kr33 power supply replacement help needed

2013-08-20 by fainardi83

hello all
i have a korg kr33 rythm box
it doesn't startup 
the problem is the +5v power supply build withj a zener and a big resitor 1W
i want to replace the both power supply +5v and +12v with regulator

do you have shematic of the kr33 or any idea on how to proceed

thx

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