Montior my monitor will not turn on the blue light keeps flashing on and off the monitor is only a year old

so working on super old 2007 PC monitors. and no PC connected."? it is NOT ANY LED BACK LAMP monitor here.
came new with XP PC's.
the monitos all good to sleep mode if no PC vidoeo connected.
in the usa, even by law, (energy star)
how ever lacking a PC, the screen will show "no signal entering sleep mode"
VGA monitor.
LED = blue on, amber sleep, LED out, oFF.
NO 1080P mode allowed, (so common now) <<<< big clue here.
set the PC to 1024 x 768 (to test ) 60Hz.
using a flash light (torch) tool,.
turn on Monitor, see blue LED
point flash light to screen, see data, now, on sceen in the beam
now you now CCFL backlamps are dead. as most are this old.


Display Modes (Resolution)

640 x 350
720 x 400
640 x 480
800 x 600
832 x 624
1024 x 768
1152 x 870
1152 x 900
1280 x 1024
1440 x 900

proof BELOW. A FREE MANUAL TOO.
page 47, see 4, CCFL jacks and HV supplies here 600VDC
free service manual with full schematics and BOM

https://elektrotanya.com/lg_w1934s_flatron.pdf/download.html


in my shop I have VGA signal generator to maKE WORK EASY.

CONNECT THE MONITOR DIRECTLY TO THE WALL OUTLET
CHECK WHETHER YOU GET CHECK AUDI SIGNAL OR NOT OR ANY MESSAGE---HTEN CHECK FOR THE CABLE---IF STILL THE ISSUE PERSISTS CHECK IT WITH A DIFFERENT CABLE---
THEN CONNECT IT TO THE COMPUTER MAKE IT SURE THE COMPUTER IS TURNED ON AND THE POWER IS GIVEN TO THE MONITOR AS WELL----CHECK THE COMPUTER WITH ANOTHER MONITOR---IF THE OTHER MONITOR IS WORKING FINE THEN CONNECT YOUR MONITOR TURN IT ON AND THEN FLASH A FLASH LIGHT OR TORCH LIGHT AND THEN SEE IF YOU CAN SEE A DISPLAY INSIDE..
WHILE CHECKING FOR ALL THESE STEPS YOUR ISSUE WILL BE RESOLVED IF NOT TYOU GOTTA CONTACT THE MANUFACTURER FOR A FAULTY MONTIOR---

STEPS IN BRIEF:
DO A MONITOR SELF TEST
CHECK FOR THE LIGHTS
CHECK FOR THE CABLE
CHECK FOR THE PHYSICAL SIGNAL
PUT THE MONTIOR ON A DIFFERENT COMPUTER AND CHECK
CONNECT THE COMPUTER WITH A DIFFERENT MONITOR AND CHECK
FLASH A FLASH LIGHT AS A LAST STEP TO SEE A DISPLAY
IF THE ISSUE IS NOT RESLOVED THE MONITOR IS FAULTY..
HAVE A NICE DAY!!!!

Do this to check if your monitor is in working state or not...!

Step 1:- Turn on your computer.
Step 2:- Unplug the Video Cable of your monitor which is connected with the computer.

( Video cable:- Cable going from the back of your monitor to the back of your tower. It has a plug with two screws on the plug ends, which you can unscrew to unplug it. Thats how it looks like. Some times it is in grey in color some times in blue.)

Step 3:- Now check on your monitor. If the display says " No Input Signal " :- your monitor is fine. Some thing wrong with the computer graphics.
If there is not display and the monitor light is blinking or solid the monitor has gone bad.

( Note :- Remember when you unplug the video cable do not unplug the power cable of the monitor. )

Let me know if it helps.

sounds like the monitor is burning out or color is out of alignment could be result of burning out and no it's not worth repairing it. had one guy repair a montior a while back, could be looking at easy 200 to 400 bucks repair. not worth it. much cheaper to buy.

I'm having the same problem. Had the monitor for almost 2 years and everything was working fine until this week. The blue light would blink, then after an unpredictable period of time, the monitor would turn on. Seems like it needs to warm up or something. I suspect it has something to do with the capacitors not charging inside. Somewhat disappointed with Sceptre. I suppose I should be thankful that I got 2 years out of it.

try swapping a known good monitor to make sure its the monitor?
http://www.aa1consulting.com

CHECK THE REFRESH RATE ON TH OLD COMPUTER MONITOR AND MOVE IT TO A HIGHER REFRASH RATE IN THE CONTROL PANAL, MONITOR, PROPERTIES, ADVANCE SETTINGS

ROD

Hi...there,
It's seems you got a busted AD Board... your LCD bios had been damaged or erased.

Yes! :)

Your monitor is not the problem. Check all the connections from the back of the monitor, to the computer.

"No Signal Analog" means your monitor is working perfectly, however is not receiving signal from the computer.

Didnt find any loose cables?
Try unplugging everything. Leave it unplugged for at least 5 minutes. You need to give the system time to drain all the excess power.

Again your monitor is fine, blue light > No signal > orange light is totally normal for your montior.

exact same thing has happened to me. I have been told it's some part which often burns out on lcd's which can be replaced easily...