Computer turns on but monitor stays blank.

your power supply board, probably has some bad caps in it

no feul need a tranfer pump or pull feul line lose and turn key switch on if no feul
well bad tranfer pump

Open up the set and look for bad caps, see some failed monitors here: http://s807.photobucket.com/home/budm/allalbums

Have you tried any other monitor connected to your computer since your current problem? Check your connections, make sure your VGA cable/DVI cable are in good condition. If none of that works try to RMA it to sceptre if your still within the 1 year period.

<table x:str="" style="border-collapse: collapse; width: 124pt;" border="0" cellpadding="0" cellspacing="0" width="165"><col style="width: 124pt;" width="165"> <tr style="height: 14.25pt;" height="19"> <td style="height: 14.25pt; width: 124pt;" height="19" width="165">http://www.wholesaleeshop.com.au/LCD-Monitor/10.4-inch.php</td> </tr></table><br />I wish you problem can be solution. <table x:str="" style="border-collapse: collapse; width: 54pt;" border="0" cellpadding="0" cellspacing="0" width="72"><col style="width: 54pt;" width="72"> <tr style="height: 14.25pt;" height="19"> <td style="height: 14.25pt; width: 54pt;" height="19" width="72">&lt;a href="http://www.wholesaleeshop.com.au/LCD-Monitor/10.4-inch.php"&gt;10.4 inch LCD Monitor&lt;/a&gt;</td> </tr></table>

Probably blown capacitors, the 19" widescreen uses 6 16V 1000uF
Do you have a soldering gun? Its not that hard to fix, get the capacitors on ebay for $6-$8 with shipping.

if the monitor works fine on your laptop, the problem definitely is at the computer, possibly with the video card (if it is using one). it could have loose connection, or parts might have damages. it seems the problem is intermittent so electronic component of the video card could have parts partially damages or leaky components.
if your still using the motherboards built in video out put, try installing a new video card.

The power -inverter board probably needs an overhaul.
I redo many of these.
If the screen was pinkish or flickering before it finally got to this point, it is possible that a bulb has gone bad.
Fran

check your system unit to make sure the problem is not from the system unit

the signal stage and cable is more likely to have faults contact a local technician for confirmation

Dor, BenQ has a 3yr warranty on their monitors. I would contact their tech support and receive an RMA to return it for repair. It will cost you shipping out there but they will ship it back. I has a BenQ FP731 myself and it blew a capacitor inside that allowed the screen to stay on. Fixed it and had it back in 5-7 days. Good luck.