Vivitek 5811100784-S Projector Lamp — Full List of 6 Compatible Models & Selection Guide

The Vivitek 5811100784-S is a widely used lamp module for Vivitek projectors, covering multiple usage scenarios such as business, education, and conferencing. This article compiles the specifications of this lamp, a list of 6 compatible projector models, and the most common points of error when verifying purchases.

Specifications of This Lamp

The above parameters are sourced from the Zorsika product database. For the full technical datasheet, please contact our sales team.

Where It Fits: List of 6 Compatible Vivitek Models

The following are the verified compatible Vivitek projector models for the 5811100784-S, separated by commas:

D925TX, D927TW, D935EX, D926TX, D940EX, D935VX

Note: Projectors of the same generation often share the same lamp module. For models not listed, please contact Zorsika technical support for confirmation.

Three Points to Verify Before Purchasing

1. Check the Nameplate Model: Open the projector's lamp door and ensure the model on the lamp label matches 5811100784-S exactly. Some Vivitek models may have suffixes like -V or +, but the lamp modules are usually interchangeable. If unsure, take a photo of the nameplate and send it to Zorsika technical support for confirmation.
2. Confirm the Lamp Type: The same model comes in four forms: original packaged, original bare, replacement, and used. These four types differ significantly. The original bare type pairs an original arc tube with a third-party lamp housing and typically offers the best overall value. Be sure to specify clearly which type you want on the order to avoid disputes upon delivery.
3. Verify Physical Specifications: The reflector size 00X51D, socket E20.8, and arc gap must match the original lamp exactly. If any of these do not align, the lamp may not fit or may fail to ignite.

Why Choose Zorsika PRO for the Same Specifications

For high-volume, standard lamp modules like the 5811100784-S, the Zorsika PRO series offers replacement solutions with the same specifications as the original. Power, arc gap, and reflector size are matched item by item against the original, and each unit is tested for ignition before leaving the factory, so it is ready to install without any structural modifications.

• Specification Matching: Power, arc gap, and reflector size are matched item by item to original parameters
• Individual Testing: Each unit is ignition-tested before shipment to ensure brightness and stability
• Warranty Commitment: 180-day warranty on the lamp; non-artificial damage under normal use is covered by after-sales service
• Stable Supply: Supports bulk procurement and project-based supply

In short: if you want original quality but with greater peace of mind overall, the Zorsika PRO series projector lamps are designed exactly for this scenario.

Note: Performance such as brightness and lifespan is significantly affected by projector condition, usage environment, and cooling conditions. Zorsika does not make uniform numerical commitments. We recommend testing 1-2 sample units before bulk purchasing.

Routine Maintenance to Extend Lamp Life

• Clean Dust Regularly: Dust buildup on air intakes and air filters directly raises the lamp's operating temperature. In dusty environments, clean every 1-2 months; in normal office environments, every 3-6 months.
• Use Eco Mode Wisely: Prioritize eco mode when brightness is sufficient, as it reduces the thermal load on the lamp.
• Avoid Frequent On/Off Cycles: Thermal cycling is one of the main causes of lamp wear. If the projector will not be used for a short period, use the shutter function instead of repeatedly cutting power.
• Shut Down Correctly: After powering off, wait for the cooling fan to stop before disconnecting power. Cutting power while the lamp is hot causes rapid cooling, which is a common cause of lamp rupture.
• Reset Lamp Hours After Replacement: After installing a new lamp, be sure to reset the lamp hour counter in the menu; otherwise, the projector will continue to alarm based on the old timer.

Frequently Asked Questions

Q: My projector is not in the 6-model list above. Can I use the 5811100784-S?

A: The list covers verified models but is not exhaustive. Vivitek products of the same generation often share lamp modules. Send photos of the projector nameplate and the original lamp label to Zorsika technical support, and we can help confirm compatibility.

Q: How do I choose between original packaged, original bare, and replacement lamps?

A: If you prioritize brightness stability and long-term reliability, the Zorsika PRO series lamp is the top choice—matched item by item to original parameters, individually ignition-tested before shipment, with performance comparable to the original and greater overall peace of mind, plus a 180-day warranty. For standard business, education, and conference room use, the PRO series is also the more hassle-free option overall. While other replacement lamps cost less, the arc tube source and quality control vary significantly, increasing the risk of brightness degradation and shortened lifespan. They are only recommended for temporary backup units.

Q: Why choose Zorsika PRO instead of the original?

A: The core logic of the Zorsika PRO series lamp is "original parameters, self-controlled quality": power, arc gap, and reflector size are matched item by item to the original, but with an additional individual ignition test before shipment and a 180-day warranty. Compared to the original, it offers greater overall peace of mind; compared to other alternatives, quality control is more consistent.

Q: What should I do if the projector reports "lamp not recognized" after replacement?

A: First, confirm whether the lamp hour counter has been reset—most such alerts are caused by an uncleared timer. If the error persists after resetting, contact Zorsika technical support, and we will provide reset methods and troubleshooting guidance for the specific model.

Q: Is there an installation tutorial for the 5811100784-S?

A: Yes. The lamp door location and disassembly steps for these Vivitek models are essentially the same. Contact Zorsika sales to obtain illustrated or video tutorials for the corresponding model.

Q: How long is the lamp warranty period?

A: The Zorsika PRO series projector lamps come with a 180-day warranty. Normal use with non-artificial damage (such as lamp rupture or abnormal early light decay) is covered by after-sales service. Brightness degradation within standard ranges is considered normal wear and is not covered by the warranty.

Related Inquiry Portals

• Zorsika Technical Support Center
• Projector Brand and Compatible Model Lookup
• Projector Lamp / Lens / Air Filter Product Library

Purchase Inquiries

For consultation on the Vivitek 5811100784-S, bulk solutions, or a complete list of compatible models, please contact us through the following channels:

• Website: www.zorsika.com
• Phone: 0086-20-38551187
• Email: sales@zorsika.com
• Business Hours: Monday to Friday, 9:00-18:00

The lamp module models, specifications, and compatible model data in this article are sourced from the Zorsika product database. Data is continuously updated; please confirm with actual quotations.