[sdiy] hum on the outputs

[Danjel van Tijn]

I took the DP4+ out of the rack and opened it up. When I inspected the
i/o jacks I noticed a ton of oxidation. My old apartment used to have
a major humidity problem and some of my gear started to rust as a
result. Looks like the DP4+ was a victim of this! I took out my trusty
can of Caig Deoxit D5 and sprayed it into the jacks. Like magic
everything is fine now. Obviously if the problem returns I will have
to replace the jacks.








On Sat, Jun 6, 2009 at 5:28 AM, Ingo Debus<igg.debus at t-online.de> wrote:
>
> Am 05.06.2009 um 23:27 schrieb Danjel van Tijn:
>
>> I have an Ensoniq DP4+ and on one pair of the outputs (3+4) I have
>> this hum/buzz that seems to float in from time to time (but not the
>> headphone jacks or outputs +2). This will happen even without audio
>> sources plugged to the inputs and the fx on blank presets. What kind
>> of internal failure or problem would cause these symptoms? The buzz is
>> not all the time and when it does appear it seems to waver in volume.
>
> I'd look for bad ground connections between the PCB and the case. I don't
> know about the DP/4+, but the DP/4 has lots of them.
>
> Ingo
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