Cannot select input OSD function on Planar PL1910M

No, there is no microphone listed in the specs, just integrated speakers

Here is he user manual:
http://www.planar.com/products/docs/cbu/current_manual/mn-planar-pl1910m.pdf

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

This sounds like a problem with one or more of the buttons on the monitor itself being stuck on, or a fault in the circuitry connected with the buttons.

Check for grit etc. in the buttons, maybe try cleaning with a soft brush while unplugged from power.

Hi,

first of all the problem is not with the monitor...
its probably a corrupted BIOS
(basic i/p o/p systems) its the chip in the motherboard which stores the configuration of your system...

one way to get around this is to,
open the case of your CPU
then on the motherboard there will be a small battery, which is called the CMOS battery ...
take out the battery from its slot...
after a minute put it back in the slot..

now you shold be able to work fine because the BIOS loads with default setting...

if this one works please give a vote

Must be damaged or faulty

Your graphics card is set to a resolution of refresh rate that your monitor cannot handle, This can sometimes be one of the normal settings - there is not much you can do. Each monitor has a native resolution which the monitor should always be set at yours is:- 1280X1024

Yes, if your monitor has built in speakers, you will still need a cable running from your computer to your monitor.

Hi...there
Sure, you can fixed by replaced the backlight inverter or repaired it.

Check to see if the various connectors are mounted on a separate subpanel that is independent of the back cover or if you must perhaps remove some of the protruding connector hardware. The 'F' connectors (the threaded coaxial type for cable or antenna input) for example, may have a fairly large diameter (but thin) nut securing them.  

Known issue -- can get a replacement if still under warranty. The planar rma techs are really really nice.