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

[Gil W.]

Thanks, will check it out.

Rob, let me review your request again. I'll write to you soon about that.


--- On Sat, 3/19/11, Graham Atkins <gatkins at blueyonder.co.uk> wrote:

> From: Graham Atkins <gatkins at blueyonder.co.uk>
> Subject: Re: [sdiy] Roland DEP5 no sound... any service manual (DEP5 or DEP3) ?
> To: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
> Date: Saturday, March 19, 2011, 6:45 PM
> Or possibly a cracked PCB ?
> 
> Graham
> 
> On 19 Mar 2011, at 14:06, Scott Gravenhorst wrote:
> 
> > "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
> > -- FPGA MIDI Synthesizer Information:
> home1.gte.net/res0658s/FPGA_synth/
> > -- FatMan: home1.gte.net/res0658s/fatman/
> > -- NonFatMan: home1.gte.net/res0658s/electronics/
> > -- When the going gets tough, the tough use the
> command line.
> > 
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