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Laptop: {{{Name}}}
Rubriek
Fabrikant GRiD Systems Corporation
200x200px
Model GRiDCase 1520
Naam
Type Laptop
Serial#
Systeem
Architectuur 80286
Systeembus/interface
OS
Netwerk
Hostname
IP Address
DECnet Address
MAC Address
Collectiegegevens
Eigenaar
Status
Knowhow
Locatie Het Museum
Label
Herkomst
Datum opname collectie 14 februari 2020
Bekijk alle hardware - Ga naar het Museum - Nieuw item

Information

A heavy-duty laptop, 80286 based, MS-DOS compatible. Includes a plasma screen, 1.44 MB floppy disk drive and a 40 MB hard disk drive.

Information about the machine:en.

Information about the manufacturer:

Status

Power supply

The device, as a portable computer was able to run off a battery pack, an external power supply and an internal power supply, that replaces the battery pack. Obviously, as an 80's system, it contained the infamous RIFA capacitors.

denz replaced two capacitors with new ones. One had already failed, the other one was cracked.

Testing the powersupply after replacing the capacitors gave an open circuit voltage of 16.26 Volt (0.01 V above the nominal 16.25). No current and load tests have been done (do we have a load tester for about 80 Watt?)

System

After repairing the powersupply, the computer still failed to start. The status LEDs near the keyboard flashed about once a second (very low intensity, we turned off the overhead lights to be able to see it). To [[User:Denz|denz] it seemed like a powersupply issue.

Stoneshop and denz took the device apart to look for visible damage to the parts, were a bit astounded by the engineering quality of the device, and the (in our view illogical) way parts of the system were laid out on the mainboard.

We couldn't find any obvious damage to mainboard and additional boards and parts.

At the moment the machine is disassembled, waiting for parts to be cleaned, and further (microscopic) inspection of powersupply and other parts still has to be done.