Chosen Solution

Hi all, I have a problem with my Benq TH681 projector. The Power LED is red after plugging in. TEMP and LAMP LEDs are off. Projector is not starting. In the user manual I only can find “download” near the error description. Any idea what this mean? Firmware maybe?

@stigpfau looks like your projector is in Download mode. " In download mode, system will be supported by full power but will not turn on projector."

This should not be marked as answered. It is not answered and it is not a lamp failure issue. I had it before and held down some buttons and it worked but I cannot for the life of me find where I got that information from. Benq are currently useless. If I manage to find out again I will come back and answer it properly. Update (12/19/2019) Ok …

  1. Disconnect all cables plugged into the projector and press the ON button for 10 seconds; (All cables unplugged).
  2. After step 1, please wait 1 hour before attempting to restart;
  3. Connect only the power cable, and check if the initial BenQ Logo image appears.
  4. Connect all other cables. So all cables out and hold down power for 10 seconds. I didn’t wait an hour and just plugged power back in straight away. Worked. Then connect all other cables. You have 100% got this!!!! Just keep on keeping on!

Hello, It appears that your Lamp is in a damaged state and needs to be replaced. It is NOT in some “Download mode” as others have stated. Here is a table that will give all the states of the led indicators regarding your projector; https://www.manualslib.com/manual/422315… I hope this helps! Rich Lilja

I pressed simultan the power button and mode/enter button and the projector started and usable but after powe off the red lamp still red. Thats it. Red is also a nice colour.

If the red light flashes briefly and the projector doesn’t start , remove and replace the small cover where you can access the bulb. Be sure that the safety switch is pressed.

hi i have benq sx920 just power button is red and projection dosent start , can someonehelp me ?