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New projector lamp module in black housing with integrated bulb for NEC MT840

Advanced Lamps

Advanced Lamps MT840-LAMP-A DLP Replacement Lamp

SKU CH-4YMF-10BP5

Replacement lamp and housing for NEC MT840 projectors, supplied new with a 90-day warranty

  • Product typeProject Lamp
  • Product weight0.99
  • Compatible with NEC MT840 projectors
  • Genuine AL Series lamp module installed
  • Ready-to-fit lamp and housing assembly
  • Lightweight design at .9900 weight units
  • Backed by 90 day warranty coverage

Compatible Replacement for NEC MT840

This new aftermarket lamp and housing module is built for the NEC MT840 projector. It restores brightness when the original lamp reaches end of life. The unit ships ready to install without additional tools. It suits owners who need a direct-fit replacement rather than a bare bulb.

Cooling and Power in Daily Use

The lamp operates within the thermal envelope designed for the MT840 chassis. Fan noise stays consistent with the projector's standard acoustic profile. Power draw matches the original specification so no electrical changes are required. The 0.9900 weight keeps mounting stress identical to the factory part.

Behaviour Under Extended Sessions

During long presentations or movie marathons the module maintains stable output thanks to its genuine AL Series construction. The included 90 day warranty covers premature failure under normal operating cycles. It is not suited for users who demand original manufacturer branding on the bulb itself.

How it compares

Measured against everything we stock in DLP TV Lamps & Bulbs, at today’s prices. Recalculated every night.

Price $34.99
Cheaper than about 84% of the 8,306 comparable items (median $97.99).

Specifications

Product
Brand nameAdvanced Lamps
Model nameMT840-LAMP-A
Part numberMT840-LAMP-A
Product typeProject Lamp

Questions about this item

How do I install the MT840-LAMP-A lamp and housing in the NEC MT840 projector, and what step is most often missed?

Power off and unplug the projector, let it cool completely, remove the lamp cover screws, slide out the old module, insert the new MT840-LAMP-A until it clicks, replace the cover, then reset the lamp timer in the menu — the timer reset is the step most often missed.

What maintenance or replacement will the MT840-LAMP-A need after extended use?

The lamp itself is the consumable; when brightness drops or the projector signals end of life, replace the entire MT840-LAMP-A module — no separate filter or bulb-only change is required for this housing design.

What limit appears first when the MT840-LAMP-A runs continuously for long sessions?

Sustained operation raises internal temperature until the projector’s thermal protection triggers an automatic shutdown; allow proper ventilation and cool-down periods to avoid repeated interruptions.

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