Old laptops like old phones can be good gear for roading and performing.
The one thing in recording I always keep in mind is: No AC no Hum, no ground loops or primary physics issues to take away from task.
Batteries for older units can be gotten cheaply: NOS replacements can be gotten at great prices. Both batteries and laptops.
You can run two laptops at the same time, same sync/ Great for performance.
You may need to come up with a battery switch. I am sure they out there. In schematic form at worst. I would think every other person on the list could design you one.
To address your problem : It is probably that old demon case vs earth ground. All grounds have to be found and united . One simple solution is to put your US gear in one rack and Japan gear in another and ground the japan rack to the US one and run power from the US to all.
Or you can do it right but that takes time.
On Sat, Jun 26, 2010 at 3:46 AM, Mark Pring
<markpringnz@yahoo.com> wrote:
I use a laptop to record the mellotron and if the laptop is plugged into the mains, I get terrible interference in the recorded and monitored sound but if the laptop is on battery power it's fine. Unfortunately it's an old laptop and doesn't run on batteries for very long. Anybody know how to fix this problem?
Cheers
Mark
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