Boss DR-55 repair question

[Daniel Araya]

Hi!

I have experienced EXACTLY the same thing!

The value of this pot is 1M Log. It's an ALPS-pot with splines.
I didn't find any suppliers of this particular one where i live (Sweden) so 
i orderd a similar pot without splines from www.trimlog.se .
Then I took both the new and old pots apart and put the original pot-shaft 
in the new pot. This required drilling out a small rivet (is that what it's 
called?) out of the end of the pot-shaft.
It was a bit hard to get the shaft to attach to the new wiper so i had to 
drill a 1,8 mm hole in the shaft and use a self threading 2mm screw and a 
very small copper bushing to fixate it.
But it worked perfect and my dr-55 is happy!

Before you try this, ask your local ALPS-dealer if he can find the correct 
type.

I'll put the schematic up at 
http://home.bip.net/daniel.araya/diverse/dr55-p4.jpg


/Daniel


At 19:52 2000-12-01 -0500, you wrote:
>Hello again,
>
>Today I received my boss dr-55 drum machine. It was shipped to me, and was
>packed very well, but, after my first glance at it, I noticed something
>wrong. The tone pot was obviously bent, and I got curious and took it apart
>to see if there was any damage.
>
>Sure enough, the pressure that the tone pot received had broken the solder
>joints for the pot and pulled up the traces on the board, too. That's really
>not a big deal, the problem is, I removed the pot and I found that it had
>been broken when ever it was mishandled. I need to replace this pot for the
>tone control to work,and I'm concerned that I am not going to find something
>that fits in there properly. Does anyone have the schematics for this unit,
>or do you know the value of the tone pot and where could i get one? Do you
>think mouser would carry something that fits?
>
>As always, any information is very much appreciated.
>
>Thank you,
>Jason
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