H452AI – Genuine Auto Iris Assembly for Epson CH‑TW610 / TW650 / TW740 / TW750
The H452AI Auto Iris assembly is a genuine original replacement part designed for select Epson 3LCD projectors, including the CH‑TW610, CH‑TW650, CH‑TW740, and CH‑TW750. It is fully compatible with lamp assemblies ELPLP97 and ELPLP97.
This auto iris is a mechanical component that automatically adjusts the aperture to regulate light output. When it fails, the projector may exhibit:
- Random flickering or pulsing brightness
- A persistent clicking or grinding noise during operation
- Stuck iris causing constant over‑ or under‑exposure, resulting in an image that is either too bright or too dim
- Error codes or automatic shutdown related to the iris mechanism
Replacing a faulty H452AI auto iris with this genuine original assembly restores proper dynamic contrast and stable brightness control. Installation requires disassembly of the optical engine and mechanical expertise; this repair is recommended for experienced technicians only.
Before ordering: Confirm your projector model (CH‑TW610, TW650, TW740, or TW750) and that the auto iris assembly matches H452AI. If unsure, send us a clear photo of your existing assembly – we will verify compatibility for you.
