seaken
Veteran Member
Hello all,
A couple of weeks ago I turned on my 5162 and it didn't boot. I thought at first it was the RLL hard drive since normally when I turn this machine on the C: drive boots up to DOS 3.3. But I don't think it's the RLL hard drive after pulling it out and putting it on my work bench this morning.
Normally when I turn this machine on I get the memory count and then a couple of beeps and am prompted to hit F1 to continue. After hitting F1 the hard drive proceeds to boot into DOS. But now all I am getting is the memory count displayed in the upper left on the monitor and then it stalls. The cursor is on the next line blinking, but no beeps and no F1 prompt.
When I power up I can see the keyboard lights blink. Then the memory counts up to 640K. Then nothing.
I am wondering why I don't get any beeps. I am not sure what the process is for it to beep and give me the F1 prompt. I'm assuming that's coming from the BIOS code but why is it stalling?
Here's what I've tried so far:
I took out all the interface cards. I put back only the mono video card (it is not the original IBM mono card but a third party card). I left the hard drive and floppy drive connected to power. When I powered it up after removing the cards the power supply comes on, the keyboard blinks, the memory count displays as before. But then it stalls. No change.
I removed the SIM memory chips and put them back in, reseating them. I pressed on the 128K memory chips, but did not remove them. I also pressed on the BIOS chips but did not remove them. Upon reboot it does the same thing. No change.
The labels on the BIOS chips indicate they are the original BIOS, according to the info on minuszerodgrees.net.
I do not have a POST card.
How should I proceed to troubleshoot this? Do I need a POST card?
The CMOS battery is completely dead. But up until now I was able to get it to boot even with the dead battery. Should I start by replacing the battery?
Thank you for any ideas you may have.
Seaken
A couple of weeks ago I turned on my 5162 and it didn't boot. I thought at first it was the RLL hard drive since normally when I turn this machine on the C: drive boots up to DOS 3.3. But I don't think it's the RLL hard drive after pulling it out and putting it on my work bench this morning.
Normally when I turn this machine on I get the memory count and then a couple of beeps and am prompted to hit F1 to continue. After hitting F1 the hard drive proceeds to boot into DOS. But now all I am getting is the memory count displayed in the upper left on the monitor and then it stalls. The cursor is on the next line blinking, but no beeps and no F1 prompt.
When I power up I can see the keyboard lights blink. Then the memory counts up to 640K. Then nothing.
I am wondering why I don't get any beeps. I am not sure what the process is for it to beep and give me the F1 prompt. I'm assuming that's coming from the BIOS code but why is it stalling?
Here's what I've tried so far:
I took out all the interface cards. I put back only the mono video card (it is not the original IBM mono card but a third party card). I left the hard drive and floppy drive connected to power. When I powered it up after removing the cards the power supply comes on, the keyboard blinks, the memory count displays as before. But then it stalls. No change.
I removed the SIM memory chips and put them back in, reseating them. I pressed on the 128K memory chips, but did not remove them. I also pressed on the BIOS chips but did not remove them. Upon reboot it does the same thing. No change.
The labels on the BIOS chips indicate they are the original BIOS, according to the info on minuszerodgrees.net.
I do not have a POST card.
How should I proceed to troubleshoot this? Do I need a POST card?
The CMOS battery is completely dead. But up until now I was able to get it to boot even with the dead battery. Should I start by replacing the battery?
Thank you for any ideas you may have.
Seaken