Question about LG Televison & Video
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Posted on Jan 02, 2017
This flashing LED usually means only two things, both are quite harmless:
1. Some laptops will flash the power LED when battery is charging. If this is the case, it should stop when battery is fully charged. This can be presumed if the laptop starts normally while LED flashes. If not, suspect step 2 below:
2. Your laptop is either "asleep" (suspended) or in "hibernation" mode.It does this if left for a long time with no activity/input from you. You must simply "wake the laptop up" now:
Look for a symbol on keyboard for "sleeping" (like a half moon with zzzz) and press that key WITH whatever color coded key matches the symbol color (usually "FN" key). If there is no suchkey, press the space bar and hold it down a few seconds.
Then wait. Can take 60 seconds to "wake up" on slower processors.
If this does not work, press AND hold the POWER button for 10 seconds. Then wait 60 seconds and press power key again, briefly, to start laptop normally.
Pressing and holding the power button 6-10 seconds forces a complete system shutdown.
If this happens often, something may be wrong with APM or ACPI settings/driver. You can go to start menu/settings/control panels/power management and adjust settings (or disable sleep/suspend and hibernation if all else fails to resolve situation)
Posted on Jun 08, 2008
I have a similar problem.
Switching the screen off (front panel button) and on again after waiting a few seconds fixes it.
This is a recent problem, so I'm expecting it to get worse and worse until one day!!!!!!
Posted on Feb 10, 2009
Usually when the power light flashes and the screen remains blank and unlit, your power board is in fact malfunctioning. This is not always the case, as the problem can sometimes reside in the input or inverter boards. I would first recommend that you feel comfortable with opening up your screen and looking at components. It can be a little overwhelming at first. BEFORE PROCEEDING, UNPLUG POWER TO MONITOR. If inclined to check, carefully open the casing around your screen. I have not worked on your particular model, but some are easier to open than others.
Once opened, you need to gain access to the circuit boards. Sometimes they are not protected by metal, other times they are completely encompassed. The flashing power light usually indicates that a capacitor(s) is(are) malfunctioning. To see if this is the issue, locate the power board (usually the one with larger-size components) and look for any capacitors having bubbled or raised tops and/or oozing a brownish liquid. If not on the power board, look elsewhere for the same symptom.
PLEASE BE CAREFUL!!! If you have recently had your monitor plugged in, the larger capacitors can still carry a charge. If you cross the leads of a capacitor while it carries a charge, it will discharge. It won't hurt any other components, but if you cross the leads with something that is in direct contact with yourself, you can get quite a jolt! There is usually a large voltage capacitor (normally just one) on the power board of these screens. I tested one with a multimeter after immediately unplugging it, and it still held a 166V charge! So please, do this with caution.
If a bad capacitor has been found, simply remove the old one and solder a new one in its place!
Posted on Mar 26, 2009
The above link goes to lg's website describing the red flashing light where the power switch is, and
another switch down below which can turn that light off.
Try switching that other switch below off so the light turns off. Then, switch it back on.
If that doesn't work, then service should be scheduled for this discontinued model.
Hope this helps on your lg tv.
Posted on Jul 14, 2010
If it cannot finish POST then you have a mother board problem.
You state you reset the BIOS. Can you get to the BIOS menu? If you can then the problem is not motherboard errors but hard drive boot sector problems, depending on OS used.
If the BIOS has been updated, then it is possibly an incorrect version or corrupt.
If you can reflow the soldering, remove the BIOS chip and fit a known good one. That should fix your problem.
Hope this helps.
Posted on Nov 23, 2010
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