re: Twilight Zone type of problem with games, IDE HD and mouse wheel! :)
Tuesday, April 19, 2005 at 9:40 am
Windows XP Annoyances Discussion Forum
Posted by Jack Gulley
(5917 messages posted)
That power supply should be able to handle it without problems any way you plug
the drives. It sounds more like there might be something wrong with it's +12v. When
you took load off of it, the problem got worse? Reminds me of a problem that IBM
had with one of its early AT power supplies where they had to use loading resistors
on the 12v if there was no disk drives.
There might be something wrong with one of the devices. I have seen bad fans
cause noise, and even bad drives cause others to fail by creating ripple on the voltages.
I have one that will cause any other drive connected to shut down, but works fine
by itself. You would have to have a good scope to see that type of problem. You
may have to borrow a good digital volt meter and measure the voltage at the connector.
The voltage going too high (above 13.8v or 15% over) would cause problems with the
drives (them shutting down the motors to protect them from over voltage), and indicate
the power supply is going out of regulation under load. Also measuring on the AC
scale and getting anything other than 0v would indicate a bad ripple problem with
a bad capacitor.
It would be basically the same problem I described, but the load causing the +12v
to go too high because there is not a matching increase in current draw on it.
It sure sounds like there is a bad capacitor in the power supply and the only
way for you to tell is to try a different power supply.
One thing you can try, is plug everything in (CD drives, etc.) and add one or
two more fans if you have them. If that helps the problem, then start looking for
a replacement power supply.
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 | | |  | re: Twilight Zone type of problem with games, IDE HD and mouse wheel! :) (Jack Gulley: Tue, Apr 19, 2005, 9:40 am) |
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