two power supplies blown in six hours by the same pc
Posted on 2003-03-23
System was set up four weeks ago, an asus a7n8x(not deluxe), amd xp2700, 512 mb pc3200, radeon 9700 pro. I had sound problems since the beginning, no sound output from rear line out jack, only from front earphone jack; no sound in, neither from rear line in & mic jacks, nor from front mic jack. While trying to solve this sound problem and not being able to make awdflash.exe update my bios(followed Asustek instructions strictly), I noticed that there was a bios set up error and cpu was not properly identified and running far below it's speed (at 1263 mhz). After solving the problem and making the cpu run at acceptable speed, without overclocking (2163 mhz)the system worked for about three hours and then it blacked out. Checked the voltage at PS and only the violet and green cables of P1 connector had dc output(+5.14 & +4.38). No voltage in any other connector. I supposed it was the PS, so claimed guarantee to my pc parts supplier, who changed it for a new one. This PS brand is Duro, has a 400 watts rating (at least that's what it written on the label). The guy told me (no way to verify it) they have sold more than one thousand without any problem. Right now I'm afraid of installing another PS. Although it may be a coincidence the problem started when I corrected the CPU configuration at the BIOS.