I own the Benq W1110 since many years, I does it job and I already managed to do some repairs.

Nowadays the projector is making a loud noise after some time.

It sounds like one of the fans is broken.

The noise does not start immediately, it only starts after the projector reaches a certain temperature. I can immediately trigger it, if I put the configuration mode to "high altitude".

Obviously it happens once the fans go to higher speed, or not sure, maybe not all fans are spinning from the beginning and some are only activated at higher temperature.

Btw., there are three fans:

(1) SUNON PBT GF30 FR(30 40)

(2) SUNON PBT-GF30 FR(17)

(3) AUB0712H-C

What did I already try?

• I cleaned the projector
• I cleaned the fans
• I looked for broken parts or something else which could cause vibration
• I removed the fans and tested each fan separately by powering it with 12V - all seem to work fine
• I contacted the vendor - they have been willing but could not help

Even if I did not find a broken fan, I still think one of it has issues, so I would like to replace it. Unfortunately I have no idea which one could be responsible.

Does anyone have another idea what else I could try?

To make things worse, I was not able to find a replacement for two of the fans, though the third fan is available on Aliexpress.

Could anyone help with the fans (1) and (2)? I assume Sunon have changed the product naming, would be great to get the datasheet of the fans so I could try to find a different one with the same specs.

Thanks@all

Regards

Daniel

⟐ Commented February 12, 2024 at 1:22 MST