Question about BenQ T701 TFT 17" LCD Monitor
If you can, check the display settings.
Some graphics cards have an option for dual monitors.
Sounds like the card is seeing only 'monitor 2'.
If you have more than one monitor port, try plugging both monitors in.
If no luck, you may have to boot into BIOS at power-up and configure from the menu.
But be careful not to fiddle with unknown settings in BIOS - this is the 'nerve center' of the computer and could cause total digital catastrophe.
If not sure, don't.
Or get expert to help re-configure.
Posted on Dec 20, 2017
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Posted on Jan 02, 2017
Did an independent diagnosis before finding this, and came to same conclusion. First found fuse PF751 was open circuit (3A black plastic fuse, not glass) over close to main heat sinks. When I replaced that with a fine fine strand of wire (for testing) then I saw Q759 (C5707) get hot. Checking the others shows that they should be driving into about 420 ohms on the primary side of the transformer for the flourescent lights (backlights) but on this one it was less than 1ohm. I've unsoldered the Q759 and now I measure 420ohms here too. Now I need to find a new C5707 or equivalent...
Posted on May 17, 2008
This is called burn-in mode. Used to test the monitor at the factory.
To fix this, use the buttons under the front of the monitor,
There are six buttons. Let's number them 1 to 6 from the left.
Press 6 to display menu (at the bottom in Red will say Burn in mode on)
Press 4 or 5 until Recall is highlighted
Press 6 to select
Press 4 or 5 until Recall All is highlighted
Press 6 to select
Press 4 or 5 until Yes is highlighted
Press 6 to select
Press 3 to exit
This will reset all paramaters and also turn-off burn-in mode
If you want to reset some parameters to your preferences, press 6 again to bring up menu and
see you user guide to get explanations for the different settings.
Posted on Dec 29, 2008
SOURCE: Benq T701 LCD monitor
I had a similar problem: the backlight on my Benq T701 only functioned for a couple of seconds every time a turned the monitor on and then the backlight switched off (sometimes in two stages). An electronics guru at work said with those symptoms the transistors rarely were the problem and I just needed to resolder the connections of the high voltage coils onto the PCB. On visual inspection those solder connections seemed ok, but when I tried to reflow the existing solder at one connection I spotted the problem: just a thin surface layer of solder was present and I had to add solder to fix the problem. The 4 coils each have 6 leads on one side and 2 on the other. I only soldered the connections on the side with 2 leads. In just 30 minutes and without buying parts the monitor is now up and running again.
Posted on Jan 22, 2009
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