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Laptop doesn't start. main supply lamp doesn't turn on.

My lg e23 laptop doesn't start. Connected to main supply the light is off.

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Could be your power supply unit gone out

Posted on May 21, 2009

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Posted on Jan 02, 2017

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My acer aspire v5-531 will not turn on and no lights at all when connected to tested power supply


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Probable main power supply failure; the power indicator is supplied by an 'always on' low voltage supply so (when normal) it allows the remote to turn on main power.

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My LG Flatron rear projection TV won't turn on. The on/off power button is not turning the TV on. There is no click sound and the red light doesn't come on. The TV is connected to mains power and ther


tried with other ac outlet doesn't work?. if still won't turn on, at this time you will need to remove the rear cover to gain access the internal part. since your tv doesn't have any power indicator, the first place to be checked will be the power supply board this is where the power connector cord is connected. now look for a blown fuse replaced with the same rating. but take note before you replaced the bad fuse you must need to have component testing in the power supply board which the cause of blown of the fuse. like shorted bridge diode, open resistance and defective mosfet or bad regulator ic.at this time you will need a device called digital tester to check weather the parts need replacement.hope this can help good luck.

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Hi,I have a LG rear projector 56DC1D tv.Power had to be turned of from mains for about 4-6hours.Turned power supply back on operated the remote to turn on all good until it switched off on its own.Did it...


Hi,
The lamp has already a resistance which is sense by the processor and made the unit a subsequent shutdown. It will produce an overload to the ballast board which is detected by the processor. Replace it with new one and your unit will back to normal again.
Hope I helped you.
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Thanks for using Fixya.

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How do i wire in a 2 light colour signal to a 2 way switch


Two Way Light Switch Wiring Have you ever wonder how a lamp that is used to light up the stairs of a building is connected to the two switches that controls it from either end? These two way switches have a single pole double throw (SPDT) configuration. Each has a common terminal (COM) with a pole that can be switched between position L1 or L2. The two way light switch wiring can be implemented by using 2 different methods. Both of the methods used are described below.

lightswitchwiring.gif

The first method as shown in the figure above have the COM, L1 and L2 of both the SPDT switches connected together. For incandescent lamp, the recommended wire gauge used is AWG #18. The LIVE AC Source is connected to L1 of SW1 and one side of the load is connected to L2 of SW2. The other side of the load is then connected to NEUTRAL of the AC Source. With this configuration, the lamp will be turned ON when one switch is at ON position and the other is at OFF position. If both switches are in the same position, the lamp will be OFF.

twowaylightswitch.gif


The other method is as shown in the figure above. In this configuration, the L1 of both SW1 and SW2 are connected together. Similarly, the L2 of both SW1 and SW2 are connected together. The LIVE of the AC Source is connected to COM of SW1 and one side of the load is connected to COM of SW2. The other side of the load is then connected to the NEUTRAL of the AC Source. With this configuration, the lamp will be turned ON when one switch is ON and the other is also ON. If both switches are in different position, the lamp will be OFF.

Take note that as the installation involves mains power supply, only those who are qualified and have electrical wiring knowledge should do this wiring. When doing the wiring, it is recommended that the power supply is disconnected from the load and the switches.

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Next check the laptop's power adapter with a multimeter, the voltage reading should be as per the label on the adapter. If the voltage is less than the voltage on the label, then it is faulty and needs to be replaced.
Borrow another adapter to connect to your laptop to see if it powers up or take it to your friendly computer shop to test it.

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Ghost images!


I had the same problem, reset the lamp hours by pressing 'menu, 619 , menu" and browsing until I found the setting, but then I also saw an option to test the lamp.  The TV shut off when I tried this and 2 red lights indicating a new lamp is needed came on instead.  It's probably the ballast and not the lamp, but I don't know that I want to put any more money into this set.  I have only had it 2 years.

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