White and black dots on the image? It's a DMD chip failure.
"Starry night effect" – what does it mean?
If dead pixels appear on the displayed image in the form of white or black dots, we are dealing with a damaged DMD (Digital Micromirror Device) chip. It is the heart of projectors made with DLP technology (e.g., BenQ, Optoma, or Acer brands).
How does DMD matrix damage occur?
The DMD chip consists of millions of microscopic mirrors that physically move. The main cause of them "getting stuck" is high temperature. If the thermal paste under the chip dries out or the cooling is inefficient, the mirrors fail and stop reflecting light.
Can such a fault be repaired?
Unfortunately, individual mirrors on the chip cannot be repaired at home. The only effective solution is to replace the entire DMD module with a new one. This is an operation requiring immense precision and technical knowledge, as it requires dismantling the entire optical block.
Why is it worth acting quickly?
Ignoring a few dots on the screen leads to a rapid "spreading" of the defect over the entire image surface. In our service, we offer diagnostics and the selection of the appropriate DMD chip for your projector model, restoring its factory display quality.
