Doepfer

Are there stickers on the back of the cases that say the voltage and fuse type?   It's possible that this PSU was converted to 115 after production, and the sticker may reflect that.  It's easy to convert back and forth, you just need to change a few solder bridges and the fuse.  Are the fuses the same?  Finally, you can inspect the underside of both PSU PCBs and compare bridges. 

http://www.doepfer.de/service/A100_PSU1_Voltage.pdf

> On Jun 26, 2018, at 7:47 PM, lerake@yahoo.co.in [Doepfer_a100] <Doepfer_a100@yahoogroups.com> wrote:
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> Hello,
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> In 1998 I bought two Doepfer suitcases, from Doug Wagner/Enport back when he was the US distributor, and just discovered that the power supply in one of them is marked as a 230V version -- see photo here:
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> https://photos.app.goo.gl/eSkT4EjNN6vdPM7T7
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> The other is marked 115V, and they're both Power Supply I, Version 5, copyright 1997. I've been using both of them in the US all this time. Is it possible that it's marked in error, or would it actually be working with the US electrical system? 
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> I'm thinking this might explain some behavioral weirdness (though I generally like electrical weirdness so I'm not complaining!) -- but wondering if it might be a good idea to replace it?
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> thanks,
> Ernst
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