No audio from the speaker.
Does it measure
around 16 ohms ?
Yes
No
Connect a known good 16 ohms
speaker in place of the existing
speaker.
Replace the speaker
Check the speaker resistance.
Problem resolved
Yes
No
Yes
No
Replace the speaker
But note that a speaker with very low resistance
can damage the audio amp on the MAIN Board.
Run the projector with audio for about 30 minutes.
If the problem returns, replace both the MAIN Board
and the speaker if resistance no longer measures
between around 16 ohms.
Replace the MAIN Board.
Does it measure less
than 8 ohms ?
Is audio OK ?
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