IBM ThinkPad T42 & T42p
The ThinkPad T42 is a Pentium M-based laptop released in 2004, with the T42p being a higher-end version of the same laptop. Both were available in two cases - one with a 14.1" display, and another with a 15.0" display.
Specifications
| Spec | ThinkPad T42 | ThinkPad T42p |
|---|---|---|
| Release Date | 2004 | |
| CPU | CPU Type: Socket 479 (Banias/Dothan) - Intel Pentium M "Banias" @1.5GHz - Intel Pentium M "Dothan" @1.6, 1.7, 1.8, or 2.0GHz | CPU Type: Socket 479 (Banias/Dothan) Intel Pentium M "Dothan" @1.7, 1.8, 2.0, or 2.1GHz |
| Chipset | Unknown | |
| RAM | Type: PC2700 DDR, 2 slots Standard: 256MB, 512MB, or 1GB Maximum: 2GB | Type: PC2700 DDR, 2 slots Standard: 512MB or 1GB Maximum: 2GB |
| Storage | 2.5" IDE Requires Adapter: No Standard: 30, 40, 60, or 80GB | 2.5" IDE Requires Adapter: No Standard: 20, 60, 80, or 100GB |
| Display Options | - 14.1" TFT LCD @1024x768 - 14.1" TFT LCD @1400x1050 - 15.0" TFT LCD @1024x768 - 15.0" IPS (FlexView) LCD @1400x1050 | - 14.1" TFT LCD @1400x1050 - 15.0" IPS (FlexView) LCD @1600x1200 |
| Graphics Chipset | ATI Mobility Radeon 7500, 9000, or 9600 VRAM: 32MB (7500) or 64MB (9000 and 9600) | ATI Mobility FireGL T2 VRAM: 128MB |
| Audio | AC97 Compatible - Stereo Speakers - Microphone | |
| Main Battery | Lithium Ion | |
| CMOS Battery | Proprietary Lithium | |
| Power Supply | Barrel Jack (16V) | |
| Media Drives | Ultrabay Slim (DVD-ROM, DVD/CD-RW, or DVD-RW) | Ultrabay Slim (DVD/CD-RW or DVD-RW) |
| PC Cards | 2x PCMCIA/CardBus Slots | |
| Networking | - Modem - Gigabit Ethernet - WiFi (Optional) - Bluetooth (Optional) | - Modem - Gigabit Ethernet - WiFi - Bluetooth |
| Other I/O | - 1x Parallel - 1x VGA Out - 2x USB 2.0 - 1x S-Video Out - 1x Line Out - 1x Mic In - 1x Dock Connector | |
| BIOS | IBM BIOS | |
| Pointing Device | Trackpad & TrackPoint | |
Resources
 Drivers |
 Service Manual |
|---|
Common Faults & Maintenance
Solder Failure
T42s commonly suffer from BGA solder failure on the GPU, which will first result in instability/crashing, and will eventually progress to a No-POST condition. This can be fixed temporarily be reflowing the chip, or permanently by reballing it.
Page last updated (MM/DD/YYYY): 03/05/2025
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