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I have an Apex LD 4088. When I turn it on the power light comes and the screen flashes in the bottom right corner. I replaced the backlight(inverter) with no prevail! Any other solutions?

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There is always a chance you need a new screen for your laptop, that or something is causing an error with the motherboard, and that would mean your laptop is basically totaled. if you can connect you laptop to an external monitor, such as a television or a computer monitor, i would try that first, because if it's connected and it works on the external monitor that means there is a problem with your screen, if this does not work, then most likely it is an unresolvable issue.

Posted on Jan 18, 2013

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  • Nathan Way Jan 18, 2013

    It's not a laptop it's a tv!

  • Alice Dettman
    Alice Dettman Jan 19, 2013

    ok, well you posted it in laptop problems... maybe next time post in tvs...

  • Nathan Way Jan 19, 2013

    They posted it there not me!

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LaptopNomad
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SOURCE: Dell Inspiron 6000 Laptop Screen has Faint Image

Sounds like your inverter has loose components on the pcb. Replacing inverters is not that costly and a relatively easy repair. Read about CCFL tube failure here.

Posted on Sep 21, 2009

Testimonial: "excellent advice and right on, as I have solved my problem by replacing the inverter"

  • 34 Answers

SOURCE: New inverter in Dell Inspiron 1501 now the LCD screen gets hot!

I've had the same problem with a Dell Lattitude D531. I've been told that it's the screen itself (which may have led to the original inverter going bad) but that one should also check to make sure none of the screws are making contact with any wires back there.

Posted on Sep 26, 2009

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1 Answer

My apex ld 4088 turns on but no sound and no picture


These symptoms commonly indicate power supply trouble

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The inverter is the usual suspect with that symptom. It may be hard to find a replacement inverter for an apex model. But you might be able to get one from www.tvrepairworld.com

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first place to begin is if able test voltages in and out of the power board inside the set---if not able to do that consider having a shop look at it.

If you get it open:



8_27_2012_9_12_28_pm.jpg


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1 Answer

My Magnavox TV give sound but no picture. When I turn it on the light in the bottom right hand screen goes green, then flashes to yellow and goes back to green. The screen does not change it is constantly...


You need to replace your backlight inverter.

Check that all voltages are coming from the power supply as they should. The power supply will be stamped with the correct amounts, and you just read with the multimeter to confirm.

After those check out ok, you will need to replace the inverter to "light" your screen again.


You can hear sound because the tv is ON, but the inverter isn't lighting the screen!


Hope this helps, please rate!

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1 Answer

Lap top dark screen, with system working fine. plugged on external vga, it works.


90 percent of the time the problem is the Inverter.

An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp. (Bulb)
Similar to the Fluorescent lamps used in home and businesses, but on a MUCH smaller scale.
(General size is 3 to 5 inches in length, and half the thickness of a No.2 pencil)

An Inverter is used to provide power for the LCD screen, and the Backlight.

An Inverter reduces the power coming from the laptop, for the Backlight.
An Inverter increases the power coming from the laptop, for the LCD screen.

An Inverter is a small circuit board located inside the Display Assembly, behind the Bezel, and usually towards the bottom of the LCD screen.

This is a typical example of an Inverter. It is NOT THE Inverter that you will need.
You have to match the Inverter to the LCD screen. has to be THE Inverter.

http://www.lcdparts.net/InverterDetail3D.aspx?ProductID=2432

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Tv comes on, green light flashes several times, get the "digital television" shown at botton left corner, then flashing green light stops, tv turns off and red constant "stand by" light comes back on. TV...


common problem with that model is the backlight inverter, 1 or more of the six transformers may be bad.also check for bad capacitors.the tedious way to check is unplug each and plug in each one at a time but unplug the power from the tv each time you check one or you will get a nice jolt. the one that doesnt light the lamp is bad.or take each transformer off and check the primary and secondary coils if you find one open coil. the transformers cost between $8 and $20 each.it has a substitute part.

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