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Benq q9w5 lcd no power - Computers & Internet

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Possible that the main power supply which is the SMPS - switch mode power supply- is faulty.
Please refer to the lin below for tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Posted on Apr 01, 2011

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Posted on Jan 02, 2017

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http://s807.photobucket.com/home/budm/allalbums
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Benq computer monitor shuts down after standby in energy saving..


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I recommend the following replacements if you are in Australia (the ones I purchased from Jaycar only lasted 12 months);
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sorry mate,that is dreaded power interter board inside lcd,read about similar benq model dramas here http://www.electronicrepairguide.com/benq-t705-lcd-monitor-repair.html

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Resolder the power transistors on inverter board and also check them.If display is not there at all some of this 4 transistors C5707 should be defective.Check associated fuse and Fet which drives the transistor.

Also check with Benq ,Normally offers three year warranty.

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