How long has your dlp tv lamp lasted?

[Hemi 6.1]

My Sony has lasted over five years without a replacemet. My manual dosn't say anything about replaceing it.

Sony never made a DLP! The made Rear Projection 3LCD,and LCoS ,that both require bulb replacments,as stated in the manuals. You must be talking about a CRT Rear projection , flat panel plasma,or LCD . Because these don't require bulb replacement.