Monitor goes blank , power light goes off.

Check your power saver settings

Start - Control Panel - Power

check the power light, is it stay on with green. If yes, probably inverter or back light tube defective. If not, make sure the VGA/DVI cable connector or power cord is secure with PC. if everything is secure then probably the power board or main board defective.

You may have to look at the setup menu to see if you can turn on 'AUTO SOURCE SELECT' and set to auto. You may have problem with the logic board that is why it cannot auto detect the DVI or VGA port automatically.

i'm guessing you don't have the original adaptor to test it... sometimes polarity is printed onto the case where the adaptor plugs in... get out your magnafying glass to see it tho.

G'day Matt,
No microphone. It has a line in socket to drive the stereo speakers.
cheers,
dave.

These monitors are plug and play compliant and should not require any drivers. If you are having video problems it may be the video card.

The first Polyview has a power supply problem (a short) and locks out the power until it is unplugged. You need to check the voltages inside the Monitor to determine which component/s are faulty. I hope you know electronics if not leave it to the repair shop because you have neither the skills or equipment to repair it. By the way I am not a monitor repair man but I do have 30 plus years in the electronics field.
The second monitor may have a broken wire in the cord that goes to your computer. Other internal components can cause the same simptoms your seeing. Good luck!

Same as before this sounds very similar to the problem that I had with my polyview v396 19" . Its a power supply problem unclip the panel withdraw the power supply it plugs in on its own seperate board. Look for capacitors that bulge and replace them in fact replace them all on tha board not that hard. Replace them with the same rating voltage and micro fards. Cheaper than relacing the whole panel, hope this helps. :)

if you are using windows and it just won't let you go on the other resolutions try checking the monitor settings in your control panel

Like most of these LCD monitors it is more than likely a PSU problem to do with the Electrolytic Capacitors, These in all probability will be faulty.. there are usually about 4 - 6 from 1000uF to 100uF replace ALL with same or better.