[sdiy] Roland DEP5 no sound... any service manual (DEP5 or DEP3) ?

[Gil W.]

Yep, the solder connections don't look very good actually, I went over them with the soldering iron and it didn't help. I does look like the switch has been replaced or resoldered before. I've been using the unit for a few years without any issues and put it in the closet for a year. When I now took it out I found that it has this kind of problem :/ I also managed to find the schematics for the DEP5.

Thanks !



--- On Sat, 3/19/11, Scott Gravenhorst <music.maker at gte.net> wrote:

> From: Scott Gravenhorst <music.maker at gte.net>
> Subject: Re: [sdiy] Roland DEP5 no sound... any service manual (DEP5 or DEP3) ?
> To: synth-diy at dropmix.xs4all.nl
> Date: Saturday, March 19, 2011, 4:06 PM
> "Gil W." <gil_we at yahoo.com>
> wrote:
> >
> >Hi,
> >
> >I have a Roland DEP5 multieffect processor which sounds
> great but has a little problem - 
> >it won't always play audio out... You can see the input
> meter flashing as it should,
> >but not always passes sound via the output jacks. It
> seems to be 
> >intermittent as sometimes it will work ok. 
> >
> >I tried cleaning the +4/-20db switch using cleaning
> spray and it didn't seem to help,
> >I also noticed that when I push it in or out it will
> play for a 
> >short moment and then the sound disappears... 
> >
> >Any suggestions of how to determine the source of the
> problem ? battery is new...
> >Also, if anyone has the schematics or service notes for
> either 
> >DEP5 or DEP3, I would be thankful if could have a
> copy... 
> >
> >thanks in advance !
> 
> From your description, it seems the switch or it's
> connection to the circuit is bad.  If the switch
> is soldered into a circuit board, look at the solder
> connections there, they could be cracked.  Or
> just reflow them all.  If that doesn't help and if you
> can access the switch contacts, I'd try
> temporarily wiring around it.  If the switch is bad,
> the wiring will cause the circuit to work
> again and tell you that you need to replace the switch.
> 
> 
> 
> -- ScottG
> ________________________________________________________________________
> -- Scott Gravenhorst
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