Date: Thu, 21 Mar 2002 09:11:06 EST From: [EMAIL PROTECTED] Subject: Re: [LIB] L50 w/damaged sound chip or fuse on MB?
In a message dated 3/20/02 7:07:06 PM Mountain Standard Time, [EMAIL PROTECTED] writes: > Neal, Raymond, and the rest of you great technical wizards. I really need > your help tracking down the source of this problem, and seeing if there's > any hope for fixing it. > > I can no longer run my sound driver in the L50. The only thing I can think > of that caused this problem would be trying to set up the HP M820E CD-R/RW > drive’s SCSI card on the L50 w/P75 CPU. The CPU requirement for the HP > drive is a P133. At the same time, I set up the WavJammer SCSI sound card > on the EPR’s PC card slot. Is it possible that setting up these two SCSI > cards simultaneously, one that wasn’t rated for this system, could have > caused the SCSI card to overheat, and thus damage the Yamaha OPL3-Sax chip > on the MB? > > Let me preface the rest of this by saying that my L50 is stock, not > overclocked, and the HDD spacers have not been removed. Here’s the rest of > the story: > > The other night I installed the drivers for this HP CD-R/RW drive, and for > the WavJammer sound card, onto a 6.4GB HDD in my L50. I had to disable the > onboard Yamaha driver to get the WavJammer drivers working, but all went > well at that point. The CD-R/RW drive actually played music CDs fine via > its line-out plug. > > Everything worked fine until I finished running some audio recording tests, > removed the HP and WavJammer drivers, and rebooted. When the desktop > appeared as a solid color, the mouse pointer froze along with the system. > After trying a few things, I ended up disabling the sound driver in Safe > Mode. That got the system to do a full boot where the system worked fine. > > The next night I put my old 750MB HDD into the L50 to back up files and > prepare for a Mandrake installation. I could swear that the system booted > with the sound driver enabled with no problem. Not remembering the system > needed a P133 at this point, I went ahead and installed the drivers for the > CD-R/RW drive onto this HDD too. > > But the system did not like trying to load and run Nero, and suddenly I > realized why (not enough CPU power), as the system froze in the process. I > booted into Safe Mode, uninstalled Nero and the CD-R/RW drivers, and > rebooted. But it turned out that the system froze at the same point booting > > into the desktop as it did with the 6.4GB HD the night before. Went back > into Safe Mode, disabled the sound driver, and all was well. > > But I was wondering, was this an OS problem that I somehow caused on two > HDDS? Or is this a hardware problem related to the sound chip on the MB? > > So I copied the Win98 installation files to the HDD, booted into DOS, ran > attrib and deltree to delete everything else, and installed Win98 onto the > 750MB HDD. But when Windows finishing setting up and booted into the > desktop, everything froze. Disabling the sound driver in Safe Mode fixed > the problem again. > > Okay… I wanted to have Win95 on that drive to experiment with installing > Mandrake from a CD-ROM. So I repeated the process and installed Win95. > Same problem. Froze booting the desktop. Disabling sound in Safe Mode got > the system to fully boot and run. > > So here was the last test. I deleted the L50 sound driver, put the 750MB > HDD into my L70, and when Windows asked for the sound driver, I fed it the > L70 sound driver via FDD… and TAH DA!… the “Microsoft Sound.Wav” chimed out > fine. No sound problems with the HDD on the L70. > > Now the only thing I noticed when the problem first manifested, was that the > > bottom of the L50 seemed fire hot when I pulled out the CD-R/RW and > WavJammer SCSI cards. Again, I wonder if those cards could have caused the > sound chip to overheat. > > Or could there be another magic fuse fix here Neil? > > All input will be greatly appreciated… though I fear the worst. > > Thanks, > > Matt > Just a shot in the dark, but I wonder whether the Lib (or any PC) has the ability to handle 2 SCSI host adapters - which is what you have with the hp m820e and wavjammer cards. Each host adapter has its allocation of ID numbers. With 2 adapters up and running simultaneously, maybe the Lib is having trouble sorting out the device IDs. Perhaps try looking in Device Manager for SCSI Controller, see what's there, and maybe remove one, see if that has any effect. Good luck! Lee ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
