HP MX705 ON MY DESKTOP JUST WENT BLACK AND BLANK. THE POWER LIGHT JUST BLINKS.

On some systems, the light blink pattern helps diagnose the issue. See if this HP info helps at all: http://support.hp.com/us-en/product/HP-Pavilion-a1000-Desktop-PC-series/3339280/model/3339281/document/bph06788

See


http://h50146.www5.hp.com/lib/doc/manual/workstation/xw6400/364898-001.pdf



Page 110 - M/B or Processor fail.

It is either the power supply or the deflection circuit.
If you can read electronic circuits and know how to use a DVM. Check the power supply voltages and the deflection circuit for any short..
Best of luck.
www.aaatvservice.com

If the computer is attached properly and you get the flashing lights it is due to switch mode power supply being faulty, too expensive to fix I think you will find, never seems to be anything like just a fuse I'm afraid, modern worlds tells you its time for you next monitor..... do try to ensure it aint the pc by hooking laptop or something else to this unit, or hooking another monitor to your pc to be sure but I find power supply failure is normally how monitors leave this world...

if orange light blinks it will be a error installation.

If the HP has onboard video but you have an add-on video card, remove the add-on and connect the monitor to the onboard vid. If it works you have a bad add-on video card. If it doesn't or you are already running on on-board video hook the mx705 up to a compatible HP. The older PB may be TOO old to handle it or not hve the correct drivers.

Sound to me like the Flyback may have gone. But it being a 17" CRT, it may just be cheaper and less hassle to go and buy a new unit.

I assume the monitor is still plugged into the back of the system?

If so, do you get any beeps which can denote error codes for the system?  Put your ear to the monitor, any strange whinning noise?

Look the problem it may not your monitor it's your windows XP. Let me guess you have a VGA/Svideo card. From prior experience I can tell you that dual output Nvidia cards will default to Svideo first, and then "adjust" your windows settings to do so every time even if a VGA monitor is re-connected (HIGHLY ANNOYING). So if the last thing you see before nothing is the Windows XP boot screen, here's how to fix it. Boot to safe mode uninstall your video driver, reboot then reinstall. You can substitute a system restore for uninstalling your drivers if you can remember when the monitor was last working. This really really pissed me off when it happened to me.

While it is sounding like a hardware problem. I'll throw in my 2 cents. Have you check the cables from the power to the source and from the monitor to the computer. Just make sure those aren't loose. One other thing...you mentioned you turn off the computer "afterwards" then it fixes itself. Is the fix for longer than it turns on at first? or does it stay on longer then goes out? Let me know what happens. Good Luck, Tim