Monitor Will not come on

If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

This Post is UNBELIEVABLE!! I have a ALESIS PROLINEAR 820 Monitor that just in the last year HAS THE SAMEEEE EXACT PROBLEM ... it powers on TURNS green but all you can hear is some faint white noise coming from the tweeter ANDDDDD to top it off My Volume knob on the back doesn't cut off anymore it just turns all the way around and around JUST LIKE YOURS ... I SURE hope you get this message update bc I'd like to know what the outcome of yours was, !! Bc whatever the problem yours had , mine obviously has the same identical problem !!! Please message back if you get this ! Thank you so much. !

LCD speakers are really not that good, specially for smaller than 42". but it should not be that faint if your hardly hearing a sound, try to get a replacement unit.

1. In bottom right of your taskbar is an icon of a small speaker, click on that and make sure the slider bar is at 100%.
2. Click the windows button in lower left corner and then click on control panel. Then click Hardware and Sound, then click adjust system volume and make sure those are at max volume and not muted.
3. Depending on your system there may be software that installed to manage your sound card or onboard sound, if there is usually there will be an icon representing it on the lower right of your taskbar. Open that and make sure sound levels are set to max and not muted as well.
4. Make sure you plugged the speakers into the right jack in the back, sometimes when plugged into the wrong hole you can faintly hear sound but thats it, USUALLY its the light green jack you want but that can vary (some sound card/connections will have small icons by each of the colored jacks as well though they are usually faint and kinda hard to see...they can help make sure speakers are plugged into the right spot)
5. Its possible your speakers are just old or defective and simply need replaced.

in most cases the fault is not the monitor its the computer in some cases its due to dirty ram slots (clean them reinsert ram) in the worst case its your cpu

check your computer with another monitor then confirm its the pc have it looked at

you might have to uninstall then reinstall either the driver or the sound devices
control panel sounds and audio,volume,advanced,speakers select appropriate speakers or audio you will find 3 drop down lists make the necessary adjustments there or control panel,administrive tools,computer management,device manager,sound,could be a yellow question mark? right click to re-install drivers or right click select properties to either troubleshoot,uninstall,rollback driver
hope this helps

You didn't mention >>>>> if it worked before you added the Monster cables and banana plugs <<<<<.

Nor did you say what you found when you checked the speaker wires. If you found nothing you still need to investigate further.

When you make a change and things go south you have to start UN-making the change to find out what went wrong.

Faint sound overall usually means a Tape Monitor or Mute function is active.

First, find out if the speakers or audio is working properly. At your PC menu, left click Setting, Control
Panel, and Add hardware. Click the add hardware wizard and just follow the instruction until you will find all the installed hardware of your PC. Click at the Audio, and the sound driver of your PC to find if these are working properly. Assuming that this are working
properly, test the audio output of your PC by putting
in another set of speaker (borrowed or otherwise).
If you hear the sound, then it is a connection problem. The wire to the speaker could be broken, or
the speaker itself. Under this condition, it is your
option to open up your monitor and test the speakers.
Or to just buy a new set of speakers. Unless you
are familiar with handling an open monitor, you may
go ahead with opening the monitor Otherwise, it is
wiser to buy the speakers which is much cheaper
than a monitor that could accidentally get damage.

First make sure your sound cards are working properly. 1) Check the master volume of your PC. Go to start menu, control panel, sounds speech and audio devices, sounds and audio devices - i) In volume tab click the speaker volume and check whether all the left, right, etc.. volumes are in medium or high. ii) In audio tab click the volume tab of sound playback and make sure that the master volume is not in mute and all the volumes are either in medium level or at 100%. After making these changes try playing any music. Even if the problem persists go and get your sound card checked in an authorised service centre.

Thanks & Regards,
Shiva

try to check the circuit board with an expert