kg0r+@andrew.cmu.edu (Kenneth Gober) (10/30/88)
Help! My AT-compatible has recently died. When I turn it on, it beeps and that's all. The BIOS is by Phoenix (or so the label on the ROM indicates) and the beep pattern is beep beep beeeeep beep. Does anyone know what this pattern means? The machine doesn't get far enough through the boot sequence to initialize the display card (an EGA which works when I try it in an XT) so I don't get any PIC's. I swapped power supplies (the first one seemed to have only 9V coming out of the 12V supply) but that didn't help. Kenneth Gober kg0r@andrew.cmu.edu kg0r@andrew.bitnet
rzahavi@gateway.mitre.org (Ron Zahavi) (11/02/88)
>>Help! My AT-compatible has recently died. When I turn it on, it beeps and >>that's all. The BIOS is by Phoenix (or so the label on the ROM indicates) >>and the beep pattern is beep beep beeeeep beep. Does anyone know what this >>pattern means? The machine doesn't get far enough through the boot sequence >>to initialize the display card (an EGA which works when I try it in an XT) so >>I don't get any PIC's. I swapped power supplies (the first one seemed to have >>only 9V coming out of the 12V supply) but that didn't help. >> I have seen this happen several times and in all cases the failure was with a part on the mother board responsible for recognizing the display card. I do not know if you only need to have a chip replaced to fix the problem. In all cases I encountered the machine was still under warranty and the whole mother board was replaced. In one instance the problem was only in the definition of the display card. Somehow it was erased from the chip. Booting from the setup disk (instead of the hard disk), and setting the card (and the switch on the mother board) to monochrome, allowed us to get far enough to change the definition to the correct one. Hope this helps, (or that your machine is still under warranty). -- Ron -- p.s. I probably don't need to tell you to check the switch on the mother board to make sure it matches your card setting, however, that is the fastest way to destroy something and see the above results. ============================================================================== Ron Zahavi (703) 883-5637 Mitre Corporation rzahavi@gateway.mitre.org 7525 Colshire Drive McLean, VA 22102 ==============================================================================