These could be corrosion at areas of magnetic influences along with dust, lots of metal in dust.... Very well could look like electrical arcing.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of DHSinclair Sent: Friday, November 07, 2008 11:59 AM To: Hardware Group Subject: [H] riddle me this? I have de-commissioned my old Abit BX6r2. Somehow that old m/b surely may have something sick somewhere inside. I suspect the hard drive/CDROM logic (pata?) is dorked. No issue. Now that I've torn the system down, I find an alarming observation to share. I accept that m/b's deal with high I/low E circuitry. But, I never expected this high I/low E circuitry to ARC to the aluminum m/b tray (Lian-Li PC69)! I've been looking at the tray with the highest magnification I have, and, it seems that this tray exhibits ~30 sites that sure do look to me like ARC sites! These sites appear to align with the old NorthBridge chip, the VR's for the cpu, and some align with the RAM modules. Has anyone else noticed this with and Aluminum m/b tray? I thought I remembered what an ARC site looked like, but, I suppose I could just be looking at general Aluminum corrosion over time. These Aluminum cases are ~9yrs old now. (They take a licking! And, keep on ticking!) I have never seen this before. Curious? Yes, does add credence to me that the old BX6r2 was on the way out! Still, I wonder. I do know that the ground continuity of the case is solid; always has been. And, all of the m/b mounting clips still meet the normal height standard (not crushed). Thoughts? Other observations? Thanks, Duncan
