Question about E-Machines eView 17f 17" CRT Monitor

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No Power It worked perfect then I unpluged it and moved it then I tried turning it on but no power then about 15 minutes later it turned on by itself, then I pushed the power button to turn it off and when I tried to turn it on it did it again, now when I tried to turn it on it doesn't turn on at all. It also doesn't seem to be damaged inside or out

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This is pretty characteristic of a failed power supply.
To verify that, one needs a capacitance meter that can measure not only the value of the capacitance but also their losses.

The problem stems from a weakness in the high frequency switching power supplies used in nearly all modern electronics. There are points in the feedback path where a type of chemical cap is used (electrolytic) that does not fare well handling high frequencies and eventually dries out internally or splits its case, losing its capacitance and developing losses that upset the feedback and finally do not pass enough signal to start and maintain the oscillations necessary to operate.

A tech with the mentioned meter could likely find this pretty quick but you need to ask if you want to invest the cost of a repair. The parts cost is minimal, probably under $2 US, but labor is costly and increasingly hard to find.

I have exactly the same monitor and when it comes time, I will repair it (when it still made sense, I repaired monitors - probably over 2,000 of them) since I have the required instruments and parts and also know how to prevent this from recurring - at least in my lifetime.

Posted on Aug 08, 2008

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Power light keeps flashing, unable to power up screen. Tried unplugging power source and turning off hard drive. Neither of or combo of worked.


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If the monitor is not turning blue that means it isn't picking up on the signal that is coming to it.
Pushing the power button on the monitor should make the monitor work and give you a no signal note if it isn't getting signal.
If it won't power on with its own power button you maybe having a low voltage problem in the monitor itself which isn't giving it enough to fire up after it has been sitting.
Just a note these monitors use and make power even when they are off, unless they are unplugged.
I'm thinking along this route also because when you said you unplugged it for a while that it did turn back on.
Only way to verify it, is to double check the monitor on another computer. and if it is the same then it will have to come apart.
Power issues are very common in lcd monitors, Lots of heat in a confined space. The bigger they get the hotter they get.
You would think they would have incorporated internal fans in these by now. But then they wouldn't sell as many !!!

bammbammfran
Search and you shall find me !!

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Sounds like you've done all the trouble shooting. If you just need that extra nudge, I would agree... it sounds like you'll be needing to shop for a new monitor.

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I'm having the exact same strange delay problem as you.
I fixed my delay when I too took my machine to your girlfriends. LOL!

No seriously.... you solved your delay problem yourself when you UNPLUGGED the power cord from the back of the monitor.

My guess is that when you unplug the power cord, the monitor resets itself. It's only a temporary fix, but, IT WORKS.

1. Turn the monitor OFF
2. Unplug the power cord from the back of the monitor
3. Wait 10-15 seconds or so
4. Plug the power cord back in
5. Turn your monitor ON........DELAY ELIMINATED.

The delay returns eventually, but, I just unplug-n-replug and I'm good to go again.

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The front panel switches seem to be the culprit.
If you are technically sound you maybe able to solve problem by opening monitor and clean front panel switches or replace them.
Samir.

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Monitor turned off and now will not restart (Power light flashing rapidly)


If your LG L204WT will not power up all of a sudden, or takes long to power up, or dies after a while and it has not been exposed to lightning damage then in all likelihood the Electrolytic capacitors in its power supply has started to fail.
Unplug the unit from mains. To open it up, remove the 4 philips screws at the back. Then starting at the bottom corner use a small flat screw driver to wedge the front bezel loose. After removing the bezel the rear casing will also come off the panel. The circuitry case is taped to the panel with silver tape. Loosen the tape, lift the power supply. Carefully unplug the two sets of backlight cables, and the front panel controls to completely remove the circuitry case. Now remove the 4 screws holding the power board and then replace the following capacitors:
You can order caps from most electronic component stores.
You will need to replace:
C105: Electrolytic Cap, 47uF 50V 105 degrees C
C106: Electrolytic Cap, 1uF 50V 105 degrees C
C202,C206: Electrolytic Cap, 680uF 25V 105 degrees C
C203,C204, C205: Electrolytic Cap, 1000uF 25V 105 degrees C
You can always use a HIGHER voltage and a slightly HIGHER uF, and HIGHER temp rating but never lower.
Make 100% sure to observe the polarity when replacing the caps. Electrolytic caps have a clear negative marking stripe on the side coinciding with a black mark on the board.

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1 Answer

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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.

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1 Take the monitor out to the street
2 Raise above head
3 Hurl it twards the ground
4 Release
5 Watch peices fly everywhere
6 Enjoy a cold beer
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