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Message from discussion Roland HP-860 electronic piano has HUM
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Josh9.0  
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  More options Sep 6 2008, 5:44 pm
Newsgroups: sci.electronics.repair
From: "Josh9.0" <squalene...@hotmail.com>
Date: Sat, 6 Sep 2008 16:44:02 -0700 (PDT)
Local: Sat, Sep 6 2008 5:44 pm
Subject: Re: Roland HP-860 electronic piano has HUM
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> Er, what exactly is this 46 volts supposed to be doing?  I doubt there is
> anything like 46 volts anywhere near the keyboard.

> Please try again.

> Gareth.

Yes... I checked it again. it's a common to all keys. No... there's
little chance of electric shock, as there is a lot of plastic between
the user and the switches.

Sorry for jumping to conclusions. It's what I do, sometimes.
And... as you will know, aluminum electrolytics are prone to going dry
given a few decades (or less) !


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