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U2312HM backlight problem
Hello!
Some time ago I have reported a problem with U2312HM monitor. The backlight was not turning on intermittently on UAC pop-up, resolution change or resume from standby (original thread http://en.community.dell.com/support-forums/peripherals/f/3529/t/19503831.aspx). That time my monitor was replaced by seller.
It was OK for some time. Nowadays my replaced monitor exhibit about the same behaviour: the backlight does not go on after standby. Sometimes I see uneven backlight in the right side of the panel. Turning off/on helps. This time the problem is less reproducible, so I've got little chance show it to technician. Meanwhile the warranty is about to end.
rrlagic
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Posted April 19th, 2014 08:00
Hello again,
I think I know the test case. If I take my notebook out of dock station, let it asleep, then plug back to the docking station, then in half cases power LED of the monitor goes blue, panel operated as ghost images can be seen in day light, but there is no backlight. Turning monitor off, then of helps.
I don't believe I'm so lucky to get second defective monitor of the same model. I have another working place with docking station of the same model, but with U2412M on it. Backlight problem never happens with it. Just to make sure I have swapped docking stations, but the trouble always happen with 2312 and never with 2412.