Looking for technical help on roland hp-103 and kr-105


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I'm Looking for technical help on roland hp-103 in piano mode keys make a distorted sound in other modes it sounds clear.
Kr-105 when you hit the keyboard it makes some electrical racket.

Any ideas on a good repair forum to checkout?

Thanks,
Jason
 
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i see no firmware in the support section for either hp-103 or KR-105. Am I blind or have you actually seen it there? For the KR-105 I see the windows driver but nothing in the readme relevant to firmware.
Thanks,
Jason
 
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happyrat1

Destroyer of Eardrums!!!
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Sorry I couldn't do more.

Rolandclan may be your last hope else you'll have to shell out for service.

Gary ;)
 
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For the KR-105 replacing the output Power IC fixed the noise which was actually DC on the right Channel. Works great now. The other Roland nothing worked All Transistors were ok.

Thanks,
Jason
 

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