To: steve harris who wrote (92435 ) 2/11/2000 9:34:00 AM From: milo_morai Respond to of 1573889
Steve here's the article from within the one you just posted.riva3d.com "P3C Motherboard Problem/Solution Recipient: ASUS Valued Customers Issuer: Technical Support Division, ASUSTeK Computer Inc. Subject: NVIDIA GeForce256 Malfunction on P3C-2000 Some distributors reported that systems built with ASUS P3C-2000 motherboards and NVIDIA GeForce256 based AGP VGA adapters seemed to expose system malfunction running 3D application when the systems were heavily loaded. After looking into the problem, we have with the following conclusions: This problem was not found with systems built with 133MHz FSB CPUs. Neither was it observed with other AGP 4X capable graphics controllers such as Matrox G400 and S3 Savage4. But for 100MHz/100MHz CPU FSB/SDRAM configuration, the problem would occur with the noise introduced by the combination of GeForce256 AGP graphics controller configured in AGP 4X mode and part of the P3C-2000 motherboards delivered before end of January. It is recommended to enable the reserved test mode by bridging the cap on 2-3 first for the JP5 jumper on the motherboard whenever applicable. The test mode is designed to increase the noise margin and most systems were proved in our lab to workaround this problem in the test mode. If the test mode can not solve this problem, please do the following suggestions. Suggestions: 1. For rework at customer side (easy way, one capacitor) : This problem can be corrected by adding a 10uF, 16V <3528> SMT tantalum capacitor on location CC9. Attention shall be paid to the polarities of a tantalum capacitor. The positive polarity of a tantalum capacitor is usually distinguished with a rectangular mark in white on its top. On the motherboard, the bolder edge of the white rectangular box at location CC9 indicates the positive polarity for the soldering pad? s layout as illustrated in the following figure. 2. ASUS manufacture solution (six capacitors) : We had also changed the production line of the P3C-2000 by changing the capacitors on location C104, C107, C108, C121, C124 and C126 from 0.1uF to 1uF which turned out to be a better alternative for production. This alternative is electrically equivalent to the solution described in the previous section. 3. Distributors that are capable of implementing the above motherboard rework are advised to contact ASUS Customer Service Center (CSC) directly in order to get the required quantity of applicable spare parts allocated for immediate delivery. For those who are unable to implement the rework, RMA service arrangement is applicable. Please send the boards back to our RMA department for following up. " So Tench is right Tom's reaching for straws.. Milo