Power supply have a toshiba laptop and the power light keep going off and want charge sometimes , i unplug the power supply a few times and it works again,, do you thinkits the battery or a faulty charger.

Take the battery out, plug in the charger and see if the laptop works. If it works, the battery may be the problem. Check the AC Adapter
Check to make sure the adapter is plugged securely into the wall outlet, connected firmly to the adapter box and to the back of your laptop. Most AC adapters have a little light in them on that rectangular box in the middle of the cord that lights up when it's getting electricity. If that light isn't on, try a different outlet. Check your fuse or circuit breaker box and plug a different device into that outlet to make sure there is power to it. If it still does not light up, your adapter could need replacing. Also check the adapter box for signs of warmth, as it will generate heat when it's plugged in. No heat means no power.

Remove the Battery Sometimes it's as simple as a seated battery. Remove the battery entirely and clean out any dust, lint or hair that may be clogging the connectors and preventing a proper connection. Reseat the battery securely and make sure the little locking pins that hold your battery in place are securely fastened and there is no movement. Unplug your laptop while it is running. If it still works, the battery has been charging. If it shuts off, or doesn't hold a charge very long, you have a bad battery. Unplug your laptop while it is off, then try to turn it on. If the battery is bad, your laptop probably won't turn on at all. Turn off your laptop's screen-saver when testing its battery. The screen-saver will conserve the battery and not give a clear time frame for how long your battery can really last. Click the battery icon on your laptop when it is unplugged. It can tell you how much battery life you have available. This icon is usually located in the bottom right corner of your screen and will provide the percentage of battery power you have left. Keep track of the time it takes to go from 100% charged to 1% charged. If this takes less than an hour, your battery is probably beginning to fail. You can also try this every week or two to see if your battery holds a charge for shorter periods. Factor in the amount of time you have used your laptop. Most laptop batteries last 2 to 3 years or about 500 charges. Wait a few days before determining whether a new laptop battery is faulty. New batteries sometimes take a few charges to build up to their maximum run time.

Hello,

the problem is from the motherboard. One problem with toshiba laptop, is that they overheat too much.

Check if the fan of your laptop is working and make sure you keep your laptop where there is ventilation, so that air can enter into the laptop.

You could also open up the laptop, clean every dust on the motherboard and also the fan and cooler.

That's the area you should concentrate your attention on and not the battery or AC adapter.

Take care.

With power off and unplug from the power supply, remove battery pack from your laptop for a few minutes to force it to 'hard' reset.

Hope it works for you!
Try again and let me know.

check the power supply, most have a little light on. might sound daft but if its a uk plug or has a fuse fitted in the plug that may have gone. try a different power supply, maybe take to a computer store and just ask them if they will try it on one of their power supply's as a test, of it works you can get multi fit power supplies quite cheap from well known auction sites. if it turns out it is not the power supply, it could be a fault on your main board, a fault with the power in socket (i have a toshiba and the pin inside the socket always breaks off, ive changed it several times) or more commonly to the older generation laptops, it ould be the battery. sometimes the battery completes the charging circuit, again knock off batteries maybe found cheap from well known auction sites, and alothough not always of great standards, they are better than paying toshiba for one and finding its a board problem.

Light flashes cause battery is critical low.
Try to unplug and then plug in cord again, until front lamp lites on.
If you continue to have this problem, post and I will explain how I solved mine.
Well I had problem that sometimes after plug in or out, battery goes from 100% to 3%, I thought it was battery or adapter, but it was software. I did ask HP about it, they said they had customers with such problem.
You might have same problem.

The battery is too low and the power supply can't charge the battery and also power the laptop at the same time.

Try this:
1. Remove the battery from the laptop
2. Plug in the power cord and turn ON the laptop.
3. It should work ok.
4. After the laptop is "stable" (what 5 minutes?), you can put the battery back into the laptop while it is ON.
5. Leave the laptop ON so the battery can get charged.
6. Lower / close the lid so that the screen will turn OFFand not take up power from recharging the battery.

If this doesn't work for you, try these steps again, maybe wait a few minutes between steps.

This WILL work!

Hope this helps!

It's a common trouble for the power cord from the adapter to break inside the insulation near the plug. This is because of frequent flexing of the cord near the plug. When this happens you'll see the power light on the computer go out, and wiggling the cord sometimes gets it going again. Without the power input, the battery doesn't charge and the laptop won't stay running.

This sounds like what's happening to your computer, and should be fixed by replacing the adapter. Generic replacements are available at reasonable prices from online vendors and at Radio Shack and big computer retailers. It's also possible to repair the adapter by cutting the cord back and soldering on a new plug if you or someone you know has the tools and skills.

Please take a moment to rate this solution if it's what you needed. Thanks for asking here!

Larry,

1. Unplug the laptop and remove the battery.
2. Press the power button down and hold for 10 to 15 seconds.
3. Press the power button 5 more times quickly.
4. Plug the power back into the laptop without the battery and press the power button.

If the laptop powers on just put the battery back in.

From Toshiba, try step-charging the battery or Battery conditioning procedures:

Batteries don't last forever. All types of batteries gradually lose their ability to hold an electrical charge as they age. Eventually, the computer's battery charge indicator may show that the battery contains less than a full charge, even though the battery has just been fully charged. The computer will then not run for as long a time from the battery as when the battery was brand new.
You may prefer to simply replace the battery if this happens, but you may also wish to try 'step-charging' the existing battery per the following instructions.
This procedure should work for the battery in any Toshiba notebook. Follow it only when you find that the computer will run from the battery for just a short while.
Check the User's Guide for more specific information about charging the battery in your computer .

Procedure

Step-charging the computer's battery

1. Unplug the AC adapter from the computer, and turn ithe computer on. Let the computer run from battery power until the computer turns off, indicating that the battery is fully discharged. Time this interval, but not with a software clock running on the same computer.
   
   
2. Remove the battery pack from the computer.
   
   
3. Unplug the AC adapter from the computer.
   
   
4. Wait at least 30 seconds. The first time through this procedure, use a soft cloth to wipe the battery pack's contacts and the AC adapter's plug.
   
   
5. Re-insert the battery pack.
   
   
6. Plug into the AC adapter into the computer again and check the fit of its plug in the wall outlet, making sure the connection is secure.
   
   
7. With the computer turned off, let the battery charge until the battery status light or icon glows green, or otherwise indicates a full charge.
   
   
8. Unplug the AC adapter from the computer.
   
   
9. Remove the battery.
   
   
10. Wait at least 30 seconds, then re-insert the battery.
    
    
11. Plug the AC adapter back into the computer.
    
    
12. Let the battery charge again until the battery status light turns green or otherwise indicates a full charge, again.

Repeat this procedure, starting from step 1, at least three times. Each time, check to see if the computer runs longer from its battery than the previous time.

Battery Conditioning:
IMPORTANT!! Interruptions in the charging cycle can be responsible for an issue called "memory effect" which may reduce the battery's charging capacity. Whenever you suspect the battery performance is not at it's optimum you should try using the following "Battery Conditioning" procedure.

Before you start: Turn off your battery saving features temporarily.

***IMPORTANT*** Repeat the following steps 2-3 times!

1. Unplug the power cord from the computer
2. Turn the computer on and let it run until it shuts itself off.
   Note: Using the CD-ROM to play an Audio CD will speed the discharge.
3. Plug in the power cord (While the system is off) charge the battery until the battery light changes from flashing green to solid green
4. Remove the battery for 30 seconds and then replace it.
   Note: If the battery light isn't lit, wait a few moments, if it still does not light check your power connections.
5. Continue charging the battery until the battery light turns solid green once again.
   **REPEAT THIS PROCEDURE 3 TIMES**
   

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

Try the following
1-unplug tv
2-remove bottom cover on tv
3-tap the power supply frame a few times (where the power cord enters the tv)
I had the blinking red light on my tv. I tried other solutions like removing the red wire a few times etc. Tapping the power supply frame solve the problem.