Question about Lexmark X5470 All-In-One InkJet Printer

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Power inverter lights as does a new one, but on switch fails to turn it back on after failing between print tasks.I am back after church in three hours.

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  • rtryon Feb 07, 2010

    replaced inverter and power cable. Both old and new inverter green lights come on, but power button is non responsive.
    It must mean that someone knows if if is a simple reset inside cabinet or a failed switch or electronic circuit.

  • rtryon Feb 07, 2010

    Answer is needed


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  • Official Brand Answer
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Hi, In this case what sometimes happens is that the printer will not get a signal to bring it up from the sleep mode that it is in. Please review the following link as it contains a lot of information about this problem and all you need to do to resolve it.

Posted on Feb 09, 2010

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Tv comes on but after couple of seconds lights goes off but sound stays ok

check the power board on the 24v side this is for the inverters.if fine then shine a light in one of the side hole in the screen at the back to see if you have a picture if you have a picture then check the relay on the power board is working its a black square there are 2 of them. when you turn on the tv you should hear click then click thats the power and then the inverter power. if you have 3 click that is the inverter power switch turning back off. if you not having this problem. then the 24volt side has a fault. would think off hand the 3 pin power chip its a half moon top. they are prone to over heat if they are next to the transformer. failing that there is a logic power chip 4 pin you will see a white line and the chip is crossing it. hope this helps.

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Well my is my wife was watching TV then turn off the TV until came back next turn on TV and hear the sound the screen is black if turn on the bedroom light and get real close to the TV you will something...

Hi there,

yup it cetainly sounds as though your backlight has failed. There are two parts to it, the light itself and the inverter board. unfortunately its difficult to diagnose one from the other as they both support the same job. If you are getting no flash of light when you first switch on then I would hazard a guess that its the inverter which has gone as this supplies power to the light. If the lights had failed, you tend to get a flash when first switching on. (kind of like a flourescent tube light)
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My dell LCD screen is not working. I used to have to unplug and replug the monitor every hour or so and it would work for a while. but now it wont stay on for more than a second. Any Ideas?

Try to see how it works with another computer or another graphics card. If it still does it, you know the computer monitor has to be repaired or replaced.

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More likely to have failed power supply (not feeding 12~18vdc to the inverter circuits), failed inverter circuits (shorted transistors, failed inverter transformers), failed back light assemblies (burnt wires). You will have to open it up and inspect the inside. Pleasen look through my pictures of failed monitors and components if yo decide to DIY repair.

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he best way to see if its a bad power inverter board to the back light or if its the backlight "bulbs" is to shine a flashlight on the screen with the computer running.

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If you can not see any text its not the inverter or bulb. Try hooking your laptop to a external monitor. If the montior works that means your video card is good and that you more than likly have a failed LCD.

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None of those problems are expensive to repair.

thank you for using fixya,rate my answer,

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Sanyo ce32ldy1b lcd 160gb black screen with sound

It sounds like you have a power supply problem, this powers the inverter! Where you just replaced the inverter, we could assume it is good! Look for some bad caps (capacitors) on the power supply board. They will look bulged on the top an may be a little leaky (brownish stain). The power supply can fail on some output and be good on others. Was the back light inverter new? If all else fails, see if you can return the back light inverter and get another! I hope this is helpful!!

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