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Mains Hum
Posted: Tue Jan 29, 2008 1:06 pm
by Reece
I bought an adapter for my pedals yesterday, and it all works fine with my Zoom PD-01, but on my Crybaby, and some old arion tuner I have laying around, I'm getting some nasty 50 cycle hum.
What could be causing it?
Posted: Tue Jan 29, 2008 1:10 pm
by Doog
Is it a daisy-chain style adaptor, or a single jobber?
Posted: Tue Jan 29, 2008 1:16 pm
by Reece
Doog wrote:Is it a daisy-chain style adaptor, or a single jobber?
I bought a cable so I can daisy chain, but the adapter is single. I get hum using it both ways though
.
Posted: Tue Jan 29, 2008 1:19 pm
by Doog
What's the ampage rating on the adaptor?
Posted: Tue Jan 29, 2008 1:27 pm
by Reece
500mA
Posted: Tue Jan 29, 2008 1:32 pm
by Doog
Some pedals require a fairly high current, stuff like digital delays and the like, and can often make cause hum problems. But I wouldn't think something like a Crybaby or tuner would need that much?
Posted: Tue Jan 29, 2008 1:38 pm
by Mike
It's your junky tuner I imagine.
Posted: Tue Jan 29, 2008 1:54 pm
by Doog
I think he's saying it hums even if there's only one pedal connected up with it. I had one of those Arion Stage Tuner pedals with no hum problems, even running off those crappy powerbrick 5-way things.
Posted: Tue Jan 29, 2008 1:56 pm
by Mike
Ohhh..
Bad transformer in the power supply then. Get a refund. if the combined amperage doesn't exceed the rating (it won't) then it's the power supply.
Posted: Tue Jan 29, 2008 9:22 pm
by Reece
Mike wrote:Ohhh..
Bad transformer in the power supply then. Get a refund. if the combined amperage doesn't exceed the rating (it won't) then it's the power supply.
Will do, thanks for the help!
Posted: Wed Jan 30, 2008 10:15 am
by NickS
There's shop on the Oxford Road in Reading that sells second-hand records and instruments. They had an Alesis Microverb II with no PSU, but they dug up a PSU and plugged it in; no sound. I left it. When I got home I looked it up and found that the Microverb II needs a 9V AC PSU and "using a DC PSU may damage the unit".
Posted: Wed Jan 30, 2008 10:17 am
by Mike
I know that place, MusicMan or something?
Posted: Wed Jan 30, 2008 12:09 pm
by NickS
Mike wrote:I know that place, MusicMan or something?
>>They even have a website now<< and the prices don't look as bad as I remember, Jim Deacon Strat for £49; Ibanez G10 bass £95?