PHG251A4HY – Genuine Lamp Driver (Ballast) for Epson CB‑680 / 685W / 685Wi / 695Wi
The PHG251A4HY lamp driver (ballast) board is a genuine original Epson spare part designed for the following interactive and ultra‑short‑throw projectors: CB‑680, CB‑685W, CB‑685Wi, and CB‑695Wi. This board provides the high‑voltage start‑up and constant current regulation required to drive the projector’s mercury lamp.
When the lamp driver fails, common symptoms include:
- Projector powers on but the lamp does not ignite (no light, no arc flash)
- Lamp lights briefly then flickers or shuts off after a few seconds
- Audible clicking or buzzing from the ballast area with no lamp illumination
- Projector displays a lamp error or shuts down with a warning light even after installing a new, known‑good lamp
Replacing a defective lamp driver with this genuine PHG251A4HY restores proper lamp ignition and stable power delivery. Installation requires opening the projector and handling high‑voltage components – recommended for experienced service technicians only.
Before ordering: Confirm your projector model matches one listed above. Verify that your original lamp driver board carries the part number PHG251A4HY (printed on the PCB label). If unsure, send us a clear photo of your existing board – we will confirm compatibility for you.
