Question about IBM ThinkPad T22 2647 Notebook

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Computer won't turn on &power supply working

16v as requ. at tip of power supply some voltage to battery not sure which to test but when testing different configs at batt connections in comp some have misc voltg. power switch feels normal however on light not lighting and no flash or lights anywhere....Motherboard???

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Hi juniorrs300,

The problem might be with the dc adapter jack. This jack is only four point soldered on the motherboard and has been known to work it self free from electrical connection. This is due primarily to everyday use. You can get the dc jacks on-line everywhere, about $6 or $7. If your the mechanical type you can try and install is yourself or take it to a computer fix-it store. I wouldn't recommend GeeK Squad they just end up sending it out and charging you a fortune($85.00) for a 5 to 10 dollar job. I hope this helps you.

Thanks for using FixYa.com

Sincerely, cyyyd7

Posted on Oct 09, 2008

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Works with battery?
Could be power connector on the motherboard

Posted on Oct 09, 2008

4 Suggested Answers

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SOURCE: IBM R32- battery light problem

usually when the charging light blinks and wont change to solid green it means the battery is dead.
solution is to buy a new battery

Posted on Dec 08, 2007

Pyrhyc
  • 2028 Answers

SOURCE: ibm thinkpad r40 won't power up.

Batteries can develop a dead short and cause a no start. Try starting without the battery. Other things you can try is checking the power supply with an ohm meter,or plug it in and stick it in your mouth, but me personally, I'd use the ohm meter. Also check the memory, a faulty memory chip can cause this. If none of these work, them I'm afraid the problem may be with the power management chip on the motherboard. If the pm chip is malfunctioning, then motherboard replacement is your only option.

Posted on Jun 28, 2008

  • 4 Answers

SOURCE: green battery charging light flashing and computer won't start

Have you tried removing the battery and replacing it again?

Posted on Mar 02, 2009

6ya6ya
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Posted on Jan 02, 2017

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1 Answer

Hp computer tower will not go on


Would that be an LED (Light Emitting Diode), blinking on the back of the Power Supply?

If so, instead of being an LED that indicates the Power Supply has power to it, it has now turned into a diagnostic LED (Light), and is telling you the Power Supply is bad.

Do you have an economical multimeter, so I can guide you in testing the 3 low DC Voltages; that come out of the Power Supply?
An economical multimeter can be purchased for as little as $5 to $12.
I have seen them on checkout aisle racks, in major discount stores.

The dangerous high AC voltage, is kept contained within the metal case of the Power Supply.
(100 to 240 Volts depending on what country you are in)

The Power Supply is a Converter.
It converts the high AC voltage into 3 low DC Voltages;
3.3 Volts, 5 Volts, and 12 Volts.
In comparison two D cell flashlight batteries produce 3 Volts DC.

OR;
Use a KNOWN to be good, Compatible power supply; for a temporary test unit.

{"Honey, I'm going to borrow the Power Supply out of your computer.
I'll put it back when I'm done."
"What? I'll be sleeping on the couch? K"} (Lol!)

Also, is the inside of the computer dirty?
(Computer Unplugged from power, Anti-Static Procedures FOLLOWED)

Let's start here......

Also, what is the Product Number?
Back of computer tower, white Service Tag.
P/N = Product Number


Post back in a Comment.
Regards,
joecoolvette

Apr 09, 2013 | HP Pavilion Computers & Internet

1 Answer

My hp pavillion laptop will not charge my battery . It won't even work without the battery but plugged in with power supply even though i know battery and power supply are sound.


It won't ever be a 'software' issue....it will be either a :

Adapter/Charger issue (Have it tested by local PC repair shop.)
if it is good, then it is the other prob. If it is not good, then buy a new one.

OR

Laptop power connector issue. (expensive repair.)

Sep 06, 2012 | Toshiba Satelitte M300 St3401 Core 2 Duo...

1 Answer

Model: A8M ID: 1C75N0AS180174 please help me identify the problem why this model suddenly didn't boot-up. After pressing the power button switch there comes the power light and after a while maybe 3-5...


Test the power supply first as a bad Capacitor or Diode could cause this. To test it plug it in and turn the computer on, when it cuts out unplug the adapter and check for voltage at the computer. If you have none the problem is the AC adapter. If you have voltage your problem is something on the board, most likely the CUP overheating from the fan not working or the fan not working is engaging the safety system to keep that from happening. The only way to tell for sure is to open the computer up and start testing the circuits. If any liquids have ever been spilled near the rear of the computer you'll have to check for shorts on the main board. Your going to need a multimeter and cooling spray for the IC chips. If it's a hot chip condition you can isolate that by spraying the ship with the cooling spray and if the computer comes back on you know that is the bad chip.

Feb 24, 2011 | ASUS Computers & Internet

1 Answer

No power - lights no fan


  1. Verify that the power supply voltage switch is set correctly. If the input voltage for the power supply does not match the correct setting for your country, your computer may not power on at all.

  2. Check for disconnected computer power cable connections. A loose or unplugged power cable is one of the top reasons why a computer doesn't turn on.

  3. Perform a "lamp test" to verify power is being provided from the wall. Your computer isn't going to turn on if it's not getting power so you need to make sure that the power source is working properly.



  4. Test your power supply. At this point in your troubleshooting, it's very likely that thepower supply unit in your computer is no longer working and should be replaced. You should however test it just to be sure. There's no reason to replace a working piece of hardware when testing it is fairly easy.

    Replace your power supply if it fails your testing.

Feb 21, 2011 | Acer eMachines E7254520 Notebook PC

1 Answer

My HP Pavilion 2500 will not start up, the blue light on the computers powerport blinks instead of staying on. I have tried a new power supply and removed the battery several times and replced it.


1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
4. The power button could be bad.
5. The motherboard could be defective & needs to be replaced

Sep 10, 2010 | HP Pavilion dv2500t Notebook

1 Answer

No lites no power will not boot up ac power supply test ok


1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. Make sure the DC jack is not loose or broken. A loose DC jack will need to be re-soldered. A broken one will need to be replaced.
4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
5. The power button could be bad.
6. The motherboard could be defective & needs to be replaced

Sep 05, 2010 | Toshiba Satellite M205-S4806 Notebook

1 Answer

Hi, I'm having power supply problems with our


Hi there,

Let's go over the situation where if your dc jack on a laptop is bad and is not making a connection to the motherboard then it might look like the battery is bad as well because the battery is now not holding a charge or even taking a charge. Now this has happened a lot in my shop with my customers where their dc jack goes bad, they think their batteries gone bad because is not taking a charge anymore, they got and buy a new battery and then they decide to bring their computer in because of the battery's still not charging even with the new battery, that's because the dc jack is bad. You're going to probably right in to this a lot where the battery's not charging because the dc jack is bad and until you fixed that the battery's never going to charged. So how do you test if your dc jack is bad, it's simple, plug in the ac adapter, take the battery out of the computer. If the computer doesn't power on then you know you have a problem with the dc jack. If the computer does power on you could put the battery back in and see if it charges, if the battery is not charging at this point it's pretty likely its a bad battery.

Now it can also be but it's pretty unlikely that the charging mechanism inside the computer on the motherboard is bad. Now I've done a lot of laptop repairs and I've maybe seen that one time. So I think that's a very rare situation, so it's pretty safe to say right now that the battery is bad. Now let's go over some other reasons why a battery won't be charging it could possibly be that the contacts between the battery and the motherboard are not making a connection maybe something spilled in there or there some film covering the contacts and they're not making a clean connection. One thing you can do is take a toothbrush and just scrub in between the pins of the battery there and also srub down the pins where the motherboard connection is. Make sure that you use a dry toothbrush preferably one that has not touch human teeth. Now I've also seen instances where there's just some some kind of flukiness that's happening with the computer where if you just take the battery out and you put it back in it might start charging. Maybe there was a malfunction on the motherboard or some circuit and it wasn't actually taking a charge. Try simple things before you determine that the battery is bad. You know reboot the computer, power the computer down, power back on, take the battery out, put it back in, once or twice and see what happens just doing that may fix the problem. Now if you done all of the above and you're fairly sure that the battery is bad it's time to buy a new battery.

Another one, there's four main symptoms that could go wrong with the laptop and they are:

1. Computer won't turn on
2. Components won't work
3. Computer shuts down randomly
4. Computer acts abnormally

Number one, the laptop won't power on.
Two, components in the laptop are not working malfunctioning.
Three, the computer shuts down randomly.
And four, the computer acts abnormally.

Now, we are going with these symptoms one by one. There could be more symptoms but these are the ones that I've found in my experiences. Now number one, computer won't power on. We got a laptop that doesn't power on. How can you tell if the motherboard is bad? Well, you just ask yourself why else wouldn't a computer power on? Number one, if it's on battery power, the battery is dead or the battery is bad and number two the AC adapter could be bad, so let's roll out number one.

Pull the battery out, keep the battery out of the computer for this test and then take your AC adapter and check the voltage with the voltmeter and I'm going show you how to do that right here. Take a voltmeter and what you want to test for is voltage. Put the meter at 20 volts DC and take the tip, the power jack tip. You hold your black, your negative on the outside of the tip and you put the red in the hole in the inside of the tip. Be very careful not to touch the red and the black and the tips together, otherwise it will create a short circuit. After doing these things, be sure you have 19 volts DC or just about 19 volts DC registered on your multimeter so we can know that the power adapter works. Now, just to make sure the connections is tight, kinda bend the power cord a little bit and make sure that the registered 19 volts DC on the multimeter or voltmeter will not fluctuate or move when you bend the power adapter cord a little. Okay if you're still getting 19 volts DC when bending the power adapter cord, jiggle the power adapter cord a little bit around make sure that there's no crimson wire. Now, after you bend the power adapter cord and jiggle it and you still have 19 volts registered on your multimeter, then the power adapter tip is probably good. A lot of time you know the tip will break, great in this area here, and you wouldn't get that 19 volts DC after you do that, after it's broken. So instead of just taking the whole computer apart and finding out if the laptop has appropriately good power jack, test the power adapter first.

Now another reason a motherboard might not turned on is because it's not getting power to the power jack. Power jack might be damaged, so absorb what you can from the outside and see if it's the power jack is loose or detached from the motherboard and if it is then you know you have to replace the power jack probably, but if it looks like it's secure the only way we we're gonna be able to test the power jack is to get down to the motherboard level and look it where the power jack is soldered on to the motherboard and this I cover in many of the case study videos.

Now there's a few other things that might cause a motherboard not to turn on or computer not to turn on, it could have a bad processor, but bad processor are fairly rare I would say 1 out of 75 computers are working on, it's the processor rather than the motherboard that's bad and also there's like maybe the power button on the actual laptop is broken or something mechanical like that, but again that's unlikely but you could check those things too.

2. Components won't work

Okay number two, components on a laptop won't work. For example, a CD drive or a wireless card don't show up in windows. Whether not working properly, well that could possibly be a motherboard but the way to test that is to replace that component. If your CD drive is not working replace the CD drive if it's still not working maybe the CD drive controller or the motherboard is bad. I've had that happened on a couple Toshiba laptops I worked on. I've bought a brand new CD drive put it in, still not working, still wasn't recognized by the BIOS and it was a bad motherboard. Now HP, I also had a problem of their wireless card but it wasn't the wireless cards that were bad it was the actual controller on the motherboard, that controls the card that was bad. I think it was positioned next to a chip that got real hot like the graphics chip or something like that, on the motherboard. So if you have a laptop with components not working, you replace the components and they're still not working then you might have a bad motherboard. Now how do you roll out if windows isn't causing this problem or the operating system's not causing the problem. Well, test it with a different operating systems. This is always a good test of the motherboard using like Linux distribution like knoppix or using the Ultimate Boot CD for windows. These are both bootable CD's and it's essentially testing the hardware of a laptop because you're running it on a different operating systems. Last thing to try if components aren't working and you suspect is your motherboard. Flash the bios of the motherboard, maybe the BIOS got corrupted somehow, and since the BIOS is like handles the basic functions of a computer, maybe it's not doing it's job and causing some abnormal activity in the computer.

Hope you find this answer helpful, God bless.

Source: http://compunics.blogspot.com/2010/06/laptop-motherboard-repair-how-to-repair.html

Jun 09, 2010 | Acer Aspire 1800 Notebook

1 Answer

My hp pavillion dv5t-1000 power cord not working


Test your voltage on your power supply...There should be a voltage amount on the sticker on your power supply telling the output.Make sure yours is putting out the right amount.If this test good,your probally looking at a bad dc jack.Jacks need to be checked by a certified repair person.....Goodluck......If this is helpful ...Be so kind as to give a testimonial.....Thank you

Apr 09, 2010 | HP Pavillion DV6227 Notebook

1 Answer

I have medion akoya s5610 laptop. Power light bottom left comes on when conected but nothing else happens, just black screen, no attempt to boot.No light on power button either


  1. Believe it or not, the number one reason why a computer won't turn on is because it wasn't turned on!
    Before starting a sometimes time consuming troubleshooting process, make sure you've turned on every power switch and power button on your computer:
    • Power button/switch on the front of the computer
    • Power switch on the back of the computer
    • Power switch on the power strip, surge protector, or UPS (if you have one)
  2. Verify that the power supply voltage switch is set correctly. If the input voltage for the power supply does not match the correct setting for your country, your computer may not power on at all.
  3. Check for disconnected computer power cable connections. A loose or unplugged power cable is one of the top reasons why a computer doesn't turn on.
  4. Perform a "lamp test" to verify power is being provided from the wall. Your computer isn't going to turn on if it's not getting power so you need to make sure that the power source is working properly.
    Note: If you have a multimeter or another electrical testing device you are welcome to use that to test your wall outlet (and power strip, surge protector, etc.). The lamp test is useful if you don't have an electrical testing device.
  5. Test your power supply. At this point in your troubleshooting, it's very likely that the power supply unit in your computer is no longer working and should be replaced. You should however test it just to be sure. There's no reason to replace a working piece of hardware when testing it is fairly easy.
    Replace your power supply if it fails your testing.
    Important: In the huge majority of cases when a computer isn't receiving power, a nonworking power supply is to blame. I bring this up again to help stress that this troubleshooting step should not be skipped. The next few causes to consider aren't very common.
  6. Test the power button on the front of your computer's case. It's not a very common point of failure but your computer might not be receiving power because the power button on the front of your PC is damaged and is not actually turning your computer on.
    Replace the power button if it fails your testing.
  7. Replace your motherboard. If you're confident that your wall power, power supply, and power button are working, it's likely that there is a problem with your PC's motherboard and it should be replaced.

Nov 27, 2009 | Medion md40298 Notebook

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