29 Jun
2009
29 Jun
'09
11:17 a.m.
On 6/29/09, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
My first question is 'do you have enough load on
the 5V line?'. If you
don't, the chopper circuit is running very 'lightky', and probably the
12V side isn't getting enough power to work properly. I've certainly had
DEC supplies where the 12V output is low untill I loaded the 5V output.
There's a load-board for the uVAX2000/VS2000 box for use if you don't
have an internal hard drive. AFAIK, that's why it's needed - to
ensure enough load on the +5V line for the +12V regulator to work.
While I've seen it, I haven't used one myself (thus can't check
details) - all of my uV/VS2000 boxes have drives.
-ethan