[sdiy] Advice?: Powering up a vintage keyboard after several years

[Tony K]

Good advice. What would you recommend for a dummy load? I used to keep an old drum board around - SCI Drumtrax , but sold it along with my soul to the devil *sigh*

Back to basics.

> On Oct 11, 2016, at 11:18 PM, rsdio at audiobanshee.com wrote:
> 
> Never use a Variac on electronics that have a voltage-regulated power supply. That includes most synths because they have linear power supplies that expect a minimum of about 3 VAC above the regulator voltage.
> 
> If you're designing electronics and want to find out where things break, a Variac is a great tool.
> 
> 
> Testing the disconnected power supplies is a good idea. Just be sure to put a reasonable load on the power supply to make sure it doesn't fry itself.
> 
> Brian
> 
> 
>> On Oct 11, 2016, at 6:19 AM, "Barry Klein" <barryklein at cox.net> wrote:
>> Well, that’s me....
>> If the consensus is just plug it in I’m good but if it is check the supplies first....  memorymoogs, prophet 5, lesser synths...  I’d just leave them off – don’t need the added grief right now.
>> No way am I going to tweak up the memorymoog supplies and go through calibration of them again... at least not now.
>> Maybe the Variac is just a thing for tube-based things like old ham sets or guitar amps?
>> I have 2 (transistor(ized) ham tranceivers and a Drake receiver that I need to try too.
>> 
>> 
>> Barry
>> 
>> 
>> From: Synth-diy On Behalf Of Barry Klein
>> Sent: Tuesday, October 11, 2016 5:14 AM
>> 
>> I am going through the stuff in my garage.  I have several vintage synths – some worth quite a bit now – and they haven’t been powered in at least 5 years.
>> What would you recommend – advancing on a Variac, or just plug it in?
>> 
>> Barry
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