I infer that this means screwed directly to the raised threaded mobo mounts.
Years ago I started using the little short 6 sided studs from serial connectors as
standoffs on some cases. I believe that is general practice now for mounting
mobos in cases that don't have raised dimples corresponding to the mounting
holes in the motherboard. The little rings of solder blobs around some of the
mobo mounting holes are there for grounding the mobo to the case. Generally
the wide head on standard computer screws will rest against them to ground to
where it's screwed into the case. In recent years, many mobos don't have the
slots for the old plastic standoffs. Occasionally I go to the hardware store and
get ¼" thick nylon bushings that the little studs will push into, and use them
mounting the mobo. That is more for mechanical support than anything else tho.
For mechanical support I also use every feasable hole for support. Otherwise
pushing in PCI cards, RAM, etc can flex the mobo to the extent it will flex down
to the case and the tab on the card will not allow it to follow the mobo enough
to seat in the PCI slot.
I would check the seating of your RAM, cards, and CPU.
Then check the clearance between the MB and side of the case where it's mounted.
Having not used spacers or plastic, your MB should be well grounded.
Next is to make sure it's not grounded where it shouldn't be.
Occasionally I do use those fiber or nylon washers in cases where the raised
mounting dimples are, in my opinion, too wide to give me the pinpoint mounting
of the MB without touching the soldered leads on the back of the MB near the
mounting holes.
In extreme cases, removing the MB and running it on a box or block of foam
can pin down a grounding/mounting problem.
It is also possible that your house wiring is not happy. You might try taking
the system to a friend's house and running it a while on their house wiring.
Thaks all.. I will double check all the wiring- and swap out monitors once
again... my thinking, when I built this beast, I may have done something
wrong.. at times, when open, I just touch something and the pc
reboots...maybe a grounding issue too? I just screwed the mobo to the case,
no plastics at all.. no spacers.. etc... As a weekend warrier, am I
beginning to shed some light??? Thank you for your advice helping me
troubleshoot this..
Overlord said:
Then again....
Had a monitor that looked fine... then the top line or two of the screen would shift
to the right by a couple pixels... then it would shift back. But a horizontal ripple
would slowly work it's way down the screen. As it was about to go off the bottom
of the screen, another ripple would form at the top.
Eventually, one afternoon the magic factory OEM smoke escaped.
Glad I was home.
oh yeah, the ripple stopped then. At least I think it stopped, I couldn't see it anymore
in any case....
There's got to be something loose somewhere... on a PC I built, if you look
closely at the monitor (which is fine, btw), you can see a very small
rippling effect..it seems to 'buzz' across the middle of the screen.. very,
very slight.. almost un-noticeable.. almost looks like a little bit of
interference.. Could someone help me better pinpoint what it is- once I can
give you the correct problem, then perhaps someone can help.. I need to do
better than describe it as rippling!
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