[sdiy] Acoustic Dimension Synthesizer

[Harry Bissell Jr]

I'd replace the components. It is not necessarily
the case that they are 'bad'... some designs run
hot enough to eventually discolor the PCB like that.

Looks like power supply, that can be a bad sign. My
guess would be that the power amp output is damaged
and it took out the supply. You might disconnect the
power amp, fix the supply and use the delay
separately.

That would be my choice. Fixing a power amp can be
tricky if you don't have the service docs (baising the
amp can be tough)

H^) harry

--- Charles Bisaillon <sdiy at oveloe.com> wrote:

> Hi yall,
> 
> I purchased a broken ADS Model 10 Acoustic Dimension
> Synthesizer a while
> back for dirt cheap. I was getting interested in the
> DIY stuff and saved it
> as a future project in my closet.
> 
> Since then, I've completed a year and a half of
> university and my first
> electronic project - www.oveloe.com/loop/ - I am now
> gathering information
> on this ADS so I can have an idea on the amplitude
> of the project, I have
> never done some repair work yet.
> 
> The ADS is a very particular unit, it seems like
> it's a digital delay but it
> has built-in stereo amp with speaker outs. Anyways,
> this thing weighs a lot
> for a digital delay. When opening it up, I found
> some burn marks on one of
> the PCB, a big burn under 2 transistors and a bunch
> of small ones under
> resistors (see pics below). I'm wondering if this
> could be simply fixed by
> changing the components that caused the burn of if
> things could be more
> serious than that.
> 
> Anyways, any help is appreciated as I am still a
> padawan. Any other feedback
> on the sound of this unit will also be appreciated
> as I have been curious to
> hear what this thing sounds like since I got it.
> 
> 
> Front panel
> http://www.oveloe.com/ADS/front.JPG
> 
> Back
> http://www.oveloe.com/ADS/back.JPG
> 
> Burn
> http://www.oveloe.com/ADS/burn.JPG
> 
> Top
> http://www.oveloe.com/ADS/top.JPG
> 
> 
> Cheers
> 
> Charles
> 
> 
> 
> http://www.oveloe.com
> Voltage-Controlled Brain Waves
> 
>