RE: [misterhouse-users] OT: motherboard question

[Gray, T. <Tim...@ca...>]

Actually none of the p-III motherboards I have installed have any
isolation..  I have about 35 seperate machines here and 3 dual P-III systems
at home with every mounting screw grounded to the case and with no plastic
washers.


in fact I haven't seen a case that has came with plastic standoffs for at
least 3 years... although I dont use consumer stuff anymore... 19" rack
mount computers or  all aluminum cases are all I use anymore.  absolutely
none of my ASUS motherboards  have ever stated they needed to be isolated.
(Yes, I do read the manuals :-)

it might be a regional thing (this grounded/isolated difference), or just
because I use rack mount cases... they might be different.  anyways..  do
you have a DVM? check each hole solder pad to see if it is ground... if so
then grounding ground to ground is not a bad thing.



-----Original Message-----
From: Benny D. Miller Jr. [mailto:bm...@cs...]
Sent: Friday, December 20, 2002 11:52 AM
To: mis...@li...
Subject: Re: [misterhouse-users] OT: motherboard question


At 08:24 12/20/2002 -0800, you wrote:
>I'm upgrading my windows workstation this weekend and ran into an 
>interesting dilemma with the new (used) motherboard.
>
>It is a dual P3 ATX board.  I installed it into an ATX case just like I 
>pulled a dead ATX PII board from.  I replaced the power supply with one I 
>know to be good.
>
>When installed in the case with the 9 screws, NO washers (there were none 
>on the PII board), the board would not boot.  There were no beeps, no 
>nothing.  The drives would show power, and a LED on the MB would indicate 
>it was connected to the power supply.
>
>This morning I removed the board, placed it on the open floor and the 
>board runs bios posts, complains about the non-existent floppy, etc...
>
>I was going to go buy about 25 plastic washers at lunch time today to put 
>on both sides of the board, but I don't think I need to isolate the board 
>from the case with ATX like you did with AT.
>
>Doesn't make much sense to this ol hacker.
>
>Alan

Alan,

I would suggest isolating the MB from the case.  The PS , power cord and 
cabling will provide sufficient grounding. Most MB's I've put it in, which 
I'm using a Dual PIII right now, have the plastic standoffs for mounting.


Ben,
Orlando

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