Toshiba Service Replacement Lamp for TDP-T420U/TW-420U TLP-LW23 Carry a back-up on business trips You never know when your lamp might fail, so it's smart to carry a back-up on business trips or keep a spare one at your presentation facility. This replacement lamp from Toshiba is a lifesaver if your bulb burns out. This durable lamp will give you hundreds of hours of excellent, crisp, clear brightness. The TLP-LW23 service replacement lamp is compatible with the TDP-T420U/TW-420U projector. It comes standard with a 90-day warranty.