Knowledge Base

The problem was identified as a defect in some of Abit's BP6 Motherboards.

Below is a note from Abit's technical support in the U.K.:

We are aware of a problem with BP6s having an unstable VTT voltage.

This problem only applies to assembly revision 1.1, board version 0.41 mainboards with Unisem branded regulator on Q6 location. Q6 is between two CPU sockets and closest to the AGP slot. There are two other brands of regulator also been used. But this VTT problem only occurred with Unisem regulator. So please double check the Q6.

The assembly revision is located on a label on the last ISA slot, you should find a label stating 'BP6-0K V1.1 -'.

The board version can be found on the underside of the board, by the keyboard/mouse socket.

If your location is within United Kingdom, motherboards with this problem may be sent directly to Abit, for modification, using a pre-arranged RMA number. This number must be clearly quoted on the outside of the packaging in which the board is sent. You must also enclose a return address where there will be someone to sign for your board when it comes back to you during normal office hours. All returns are handled strictly on a First-In, First-Out.

For all warranty issues other than this one you MUST contact your own supplier. Mainboards turning up here which do not fit the description in the second paragraph will be rejected.

If you are competent to modify the board yourself (or know someone who is), then all that is required is to replace the EC10 capacitor with one of value 1500uF/6.3v.