AMS 486 DX2 66mhz Laptop wont display

[Robert J. Stevens]

I just signed on to this Group.
I am trying to get my Old AMS 486 DX2 Laptop running. [The battery is
not to good shows voltage but system shuts down on Battery Only] I
managed to get it going by adding Voltage input from an old AT PSU. The
System boots up and beeps twice. If I press the F1 key the floppy reads.
The system recognizes ALT-CONTROL-DEL and reboots. I get nothing on the
the Laptop screen. If I put a external Monitor on it flashes once when I
boot or reboot. Does anyone know of a simple Terminal Program I can
AUTOEXEC to and try to see if I can access system that way. It appears
that the BIOS is Set to display only to the LCD.
Any Help or Suggestions will be appreciated
TIA
Bob in Wisconsin

 

[L.G. John J. Yeosock]

First of all you need to take care of the Batt problem. You need a new
batt. The batt you have probably have a memory and won't fully charge.

Check around in your immediat region, you probably have a small shop that
make custom batt for cell phone, Laptop computers, etc.

They could check your batt to see if they could recycle the cycle, (fully
drain it and deep charge it), if not replace the cell in it.

Second, when your system Beep twice, you have a CMOS Checksum error. (The
setup of the bios as change)
You need to change the internal batt in the compter that keep the internal
clock running and make sure that the setup in the cmos is always in memory
foe the bios.

The external monitor cannot be used, until you give the command on the
laptop to switch to the external monitor. I have an old Compaq portable
that have the same problem.

Now if the LCD wont lite up when the computer is on, that mean that the LCD
unit could be defect.

Laptop are not like Desktop PC, with a Desktop you can fool around with part
to make the computer works, but Laptop PC, for many of them out there. They
are no parts available for them if you want to make one working.

One best solution: If you want to get access to the hard drive, you could
have it remove and plug on a full desktop 486 or Pentium 75 and have the
data transfered. UNless the technologie was custom build for that AMS
laptop.

I hope that help you.

JJY [Quebec, Canada]

I just signed on to this Group.
I am trying to get my Old AMS 486 DX2 Laptop running. [The battery is
not to good shows voltage but system shuts down on Battery Only] I
managed to get it going by adding Voltage input from an old AT PSU. The
System boots up and beeps twice. If I press the F1 key the floppy reads.
The system recognizes ALT-CONTROL-DEL and reboots. I get nothing on the
the Laptop screen. If I put a external Monitor on it flashes once when I
boot or reboot. Does anyone know of a simple Terminal Program I can
AUTOEXEC to and try to see if I can access system that way. It appears
that the BIOS is Set to display only to the LCD.
Any Help or Suggestions will be appreciated
TIA
Bob in Wisconsin