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311-9421 projector lamp module
Fits 2 projector models from Dell.
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The Dell 7609WU takes a 300-watt lamp module listed here as 311-9421, supplied complete with its housing ready to fit. This is one of the higher-wattage lamps in the range, reflecting the brightness needed for the 7609WU's larger installations. Rated life is shorter than some smaller lamps at 2000 hours, which is typical for high-output bulbs.
This lamp also appears under the codes 468-8992 and 725-10127, both referring to the identical part. The '3YNBD' reference alongside the 7609WU name on some listings describes the same projector rather than a different model, so this module fits either way your unit is labelled.
At a glance
- Wattage — 300 W
- Rated life — 2,000 hours
- Type — Projector Lamp with Module
- SKU — LA-08751
- Compatibility — 2 projector models
Common questions
Why is this lamp rated for fewer hours than some other Dell modules?
Higher-wattage lamps like this 300-watt unit typically have a shorter rated life than lower-powered bulbs, because they run hotter to produce more brightness. A shorter rating here isn't a sign of lower quality, just a trade-off of the higher output.
What does the '3YNBD' part of the projector name mean?
It's an alternative reference for the Dell 7609WU rather than a separate projector model, and this lamp module fits it the same as the standard-named unit, so no separate part is needed for that labelling.
Do 468-8992 and 725-10127 both work as order codes?
Yes, both 468-8992 and 725-10127 are alternative part numbers recorded for this same 311-9421 module, so ordering under either code should bring you directly to this exact listing.
Is a 300-watt lamp harder to fit than a smaller one?
No, fitting is much the same regardless of wattage - the module slides into the lamp bay and connects the same way. The higher wattage affects brightness and heat output rather than the fitting process itself.
How can I tell my 7609WU needs a new lamp rather than a different repair?
A lamp nearing the end of its life typically causes gradual dimming, colour shift or a lamp-life warning on screen, whereas other faults tend to show as no image at all or unusual noise from the fan. If the projector otherwise powers on normally, the lamp is the likely cause.
This is a complete module — bulb already seated in its housing, so it drops straight in.
Why is this lamp rated for fewer hours than some other Dell modules?
Higher-wattage lamps like this 300-watt unit typically have a shorter rated life than lower-powered bulbs, because they run hotter to produce more brightness. A shorter rating here isn't a sign of lower quality, just a trade-off of the higher output.
What does the '3YNBD' part of the projector name mean?
It's an alternative reference for the Dell 7609WU rather than a separate projector model, and this lamp module fits it the same as the standard-named unit, so no separate part is needed for that labelling.
Do 468-8992 and 725-10127 both work as order codes?
Yes, both 468-8992 and 725-10127 are alternative part numbers recorded for this same 311-9421 module, so ordering under either code should bring you directly to this exact listing.
Is a 300-watt lamp harder to fit than a smaller one?
No, fitting is much the same regardless of wattage - the module slides into the lamp bay and connects the same way. The higher wattage affects brightness and heat output rather than the fitting process itself.
How can I tell my 7609WU needs a new lamp rather than a different repair?
A lamp nearing the end of its life typically causes gradual dimming, colour shift or a lamp-life warning on screen, whereas other faults tend to show as no image at all or unusual noise from the fan. If the projector otherwise powers on normally, the lamp is the likely cause.
Other Dell lamps in the catalogue. Codes in the same family often differ by a single character, so check the part number against your old lamp before ordering.
