No signal on my Benq DLP630 projector

Probably because the signal going into the projector is a different resolution to the panel. The projector has an auto sync feature. But that only helps so far. Try changing the laptop resolution to match the native resolution of the projector (the pixels) and not the maximum resolution.

Depending on what type of laptop or projector you're using the HDMI me not carry the audio signal. you may want to see what your audio outputs are and try hooking them up in addition to the HDMI

you have to change the video out put on the laptop and it is differant for each setup if you are running win 7 you will find connect to projector in the control panel

Try to send 'only to projector'.. If you are trying to see image from both, maybe your video card can not support it...

Hi there,

1) Turn off the BenQ power, before connecting your VGA cable to the Toshiba laptop.

2) Once your laptop recognises the BenQ unit, you then need to tell your laptop to send an output signal to the BenQ - you do this by pressing your 'screen output' button (this is usually one of the function keys and you may need to hold the key for 1sec). The output function key can choose either single VGA output, or both laptop screen + VGA output.


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you need to go to te control pannel and go to display settings then manually select the external monitor then hit apply it will open on your projector

Hi I am Vortash .. you need another connection from the laptop earphones to the audio in on the projector . that would be a 3.5 mm stereo jack to twin phono .. or if you have a line out on the laptop from there , if you do have this connection then you may need to activate the sound input in the menu of the Projector .
hope this is of help Regards Vortash

make sure you are using ac power
and not battery

try to replace your vga cable maybe it is defective.

Hi Jhem,

It definitively sounds like either a Screen resolution or a Screen Refresh rate problem. I would suggest you start at the bottom: set your Screen Resolution to something very low like 800x600 and set the Refresh rate to 60Hz - both in Windows of course - you'll probably have to do this with you regular display attached to you PC first, then connect your BenQ second. Than move your way up to the recommended spec in your BenQ User manual.

Cheers