Lamp needs replacing on the BenQ TH685

Source: YouTube — repair & troubleshooting videos Confidence: 60% Verified Aug 9, 2026

The projector lamp is dim or has failed and needs replacing.

How to fix Lamp needs replacing

Replace the lamp

Replace the projector lamp with a genuine one.

Source: YouTube — repair & troubleshooting videos Confidence: 60% Verified Aug 9, 2026

Difficulty: ★★ Est. 15 min

Parts needed: BenQ TH685 Replacement Lamp

Reset the lamp timer

Reset the lamp hour counter after replacement.

Source: YouTube — repair & troubleshooting videos Confidence: 60% Verified Aug 9, 2026

Difficulty: ★ Est. 2 min

Replacement parts for the BenQ TH685

BenQ TH685 Power Supply BenQ TH685 Replacement Lens BenQ TH685 Replacement Lamp BenQ TH685 Air Filter BenQ TH685 Remote Control BenQ TH685 HDMI Cable BenQ TH685 Ceiling Mount

← All BenQ TH685 error codes

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