Replacement bulbs are quite expensive to replace, but fortunately they usually last four to five years. If your bulb light starts flashing or if the fan comes on but nothing shows up on the screen, you may need a replacement bulb. (For tips on other LCD projector issues, see Troubleshooting Your LCD Projector)
The media center keeps most models of Epson bulbs in stock. Send or bring your projector to the media center or email us with the PowerLite "S" number (S4, S5, etc.), and you can usually expect a replacement later that same day. We will then inform your department ITL that they will need to purchase a bulb to replenish our inventory.