Re: Vortex power supply - AC, but can take DC?

[van Sinn <vansinn@post.cybercity.dk>]

Bob Amstadt wrote:
> 
>> Guys honestly its only a matter of time before you burn something 
>> out!  I have been round and
>> round with my fellow repair people and we all say the same thing it is 
>> not worth the risk and time
>> involved to get the equipment working.
> 
> 
> As an equipment manufacturer, I always recommend that people buy 
> replacement power supplies directly from me.  In fact, I encourage it by 
> only charging my cost on the replacement supplies.  My reasoning is that 
> I know the behavior of the supplies that I ship.  There are other 
> supplies that will work, but without having a chance to test them, I 
> can't no for certain that they will work.  So, I try to keep my 
> customers happy by providing them with a known good supply at a 
> reasonable price.
> 
> As far as getting supplies for obsolete equipment, I have found it 
> difficult to always get a manufacturer supplied replacement supply for 
> obsolete gear. In that case, I do what the people on the list here have 
> been doing.  I do my best to determine what the required specs for the 
> supply are and then I go find a suitable supply to meet those specs.

Of cause you're all correct.  Which is why in the previous post
 > Personally, though, I wouldn't risk it.
I said  "Always a good starting point, until checking schematics.. "
as a reply to this specific Vortex PSU question.

Whatever, I fully agree, and maybe should've refrained from the 
comments, especially because I forgot to advice measuring the adapter 
before using it.  Far too many says 9 or 12 volt, but measure far more, 
especially the smaller possibly undersized ones.


FWIW, I never plug in non-specified adapters without checking the 
schematics.
Short example: Bought an RME Multiface without adapter. The manual said 
"DC 8-28 volt, ac 8-20 volt", but didn't mention connector polarity, so 
I mailed RME to be sure, and also ask if DC was preferred.


-- 
rgds,
van Sinn