BenQ MX631ST DLP Replacement Lamp with Genuine OEM Bulb

What this lamp replaces

This genuine OEM replacement lamp fits the BenQ MX631ST projector. It supplies the original bulb inside a compatible housing so brightness and colour stay at factory levels. Schools, meeting rooms and home-cinema owners who need a like-for-like swap will find the correct part here. Buyers with a different BenQ model or another brand must verify their exact projector number before ordering.

Installing the assembly

The lamp ships as a complete housing, so you only release the projector’s lamp door, slide the old unit out and insert the new one until it seats. No separate bulb handling or alignment is required. The most common error is forgetting to reset the projector’s lamp-hour counter after installation, which leaves the replacement warning active. Touching the glass envelope with bare fingers can also shorten life, so hold the housing by its frame.

Limits of the DLP lamp system

A DLP lamp dims gradually rather than failing instantly, so plan replacement once image brightness drops below usable levels for your room. The 180-day warranty covers defects in materials and workmanship but excludes damage from power surges, overheating caused by blocked vents or incorrect installation. The lamp cannot compensate for a projector whose colour wheel, optics or electronics are already degrading.