Question about HP ProCurve Switch 2650

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Hp ze4600 will not power on

When I plug the adapter in the yellow charging light is blinking. Press the power button and the blue power on light just blinks at me like it is in standby or hibernating and wont wake up.
I can hear faint electrical humm from the motherboard. I tested the Adapter it tested fine and I tested the fuse on the motherboard also tested fine.
I have removed the cmos battery/all the drives battery etc. still it appears to be in sleep mode.
I have taken it apart and reassembled it 4 times and cannot see any burnt spots on the mobo.

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  • Expert
  • 64 Answers

Hello Mimmerfy, I have just read your problems, you checked almost every basic points. you should also read this link for more diagnose your computer issue:

If you didn't get answer recommend to call me at +1 (833) 493-0111 (toll-free) number.

Cheers
John

Posted on May 03, 2017

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: HP Pavilion Laptop zv5000 wont power on. NOT power cord problem.

Do you have Vista? If so, you should contact HP directly. I had the same problem which occured 3 months after my warranty ran out. I called HP and was told(after they tried to sell me another laptop) that I installed the wrong antivirus program but since I never used my warranty, they would do me a BIG favor and fix it for free. I then waited 14 days for my new laptop and was very happy when it was returned only to find out 3 months later that there is a RECALL for HP laptops with the Vista program that was a MANUFACTURERS defect. THEY HAVE TO FIX IT AND FOR FREE!!!!! I hope this helps you. Good luck.

Posted on Feb 28, 2009

RSBennett
  • 54 Answers

SOURCE: Sleep Mode Lockup on Dell Inspirion 530 w/ Vista

Try hitting the "Windows" key on your keyboard to bring it out of sleep mode. The "Windows" key is generally found on the bottom row of the keyboard, near the Alt and Ctrl keys, and it has no letters on it, just the Windows logo. That key brings my Windows Vista machines out of sleep mode when other keys won't.

As for the power button, anytime you need to force a computer to turn off, you can press and hold the power button to do so. Usually, you need to hold the power button for 5-10 seconds and it will shut down. Use this option with caution, as it turns the computer off without running through the shutdown process and can cause you to lose data.

Hope this helps.

Posted on Mar 08, 2009

Benzschwagel
  • 33 Answers

SOURCE: HP Pavilion dv4000 battery won't charge

all you really need to do to find out if it might be broken is to check and see if that DC Jack on the computer is "wiggling" around, if the center part is moving around. If it is, then there is a chance that it is broken. I used to work at a computer store where the owner would resolder new DC power Jacks into laptops, but he was the only one in town who did that. So you might want to check around at the local computer repair or electronics stores to see if someone does that type of thing. Also, have the power supply checked out, it could just be dead.

Posted on Mar 25, 2009

joecoolvette
  • 5660 Answers

SOURCE: dv6000 443775-001 power issue

At the risk of subjecting myself to your possible wrath, I suggest you replace the motherboard. I don't know your computer repair prowess, and am not doubting it for a minute, but I 'stand' here to tell you, that it's just not that simple.

The hardware components are installed down into a bare motherboard. The leads for the hardware components are in their 'raw' state, where they hang down past the motherboard. Then the motherboard is heated up using a hot air soldering method, and the solder flows over the leads making a precise, pretty little solder joint. This is done with robotics. Once this is accomplished, the extra length of lead is snipped off.
Some components are installed by hand. Very few of them. The operator uses a soldering station, and an instrument that magnifies the area by a great amount. Looks like a binocular microscope. One, two ,three, and the next motherboard comes up, and the same part, by the same operator is installed once more.

Again, not doubting your expertise in this area, but if you have use much heat, or linger too long, you stand the chance of making the copper circuit trace, lift right off of the motherboard, when you go to remove a component. Not enough heat, and you can't remove enough solder, nor get the lead to come out of the hole. (I use solder wick. Also known as Desoldering Braid. Solder ****** tools are for the bird's! (Desoldering Tool)

Same thing with soldering a new component in place. Too much heat or linger too long,....well you know what happens. Not enough heat, or staying in position long enough, plus using the right technique, you get a cold solder joint. It's a lot of fun, when you reassemble the laptop all the way, and find this! Guess what happens next? Yep! Do it all over again!

I'm not a saleman for Ebay, but I find a lot of my motherboards for laptops on there. I would also suggest looking at -> Laptops for Parts.

Posted on Apr 14, 2009

  • 52 Answers

SOURCE: HP Pavilion 8000 power light and battery light blinking

hi,

Hp recalls some king of batterys, maybe yours it is on this recall, contact hp web or phone to take advantege of this recall, otherwise appears that your battery do not work you may replace it.

Thanks
vcrtech

Posted on Apr 27, 2009

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Elite book 2640 blue light light on,yellow light flashing,screen blank


yellow light sounds like charge indication.If you press the power botton the fan should spin and you should be able to open the DVD by pressing the button on the tray.These are 1st steps to check motherboard function.If there is RAM installed remove battery after turning off power supply.Open memory door and reseat RAM.Replace cover then battery - power on.Any picture?Try an LCD monitor - no picture? Try different RAM or 1 stick at a time,remember to remove battery or RAM will be damaged.Still no picture - remove battery and try with AC adapter only.Still no picture - remove AC hold down power button for 30-sec plug in AC only and press power button.Still no picture - check CMOS battery if it uses a CR2032 button cell it may be flat.This can cause a no boot situation.If the CMOS has a plug or is soldered to the board that should be OK.The button cell may be hidden in the chassis anyway and to change it will require disassembly.So replace it when doing the cleaning.Still no picture - GPU is faulty.The unit should be disassembled and a reflow of GPU done,as well as cleaning all dust and fluff from the fan and other cooling system components.Airflow restriction of the cooling system is the cause of overheating and GPU issues.Google disassembly for your laptop and reflow method for GPU.If you have no experience with disassembly a step by step guide is crucial.Breaking parts is easy so extreme care is very important.

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Laptop hp compaq tc 4400 is not charging , during adapter connected to laptop and turning power/standby led ... it doesnt switches on, instead battery charging led blinks 4 times, and doesnt turns on, so...


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Basically i plugged in the ac adapter to it, pressed the power button and the power light comes on for 2-3 seconds then the power light shuts off. lcd screen never turned on or show anything, fan never...


>>> Please leave feedback so I can continue helping You & Others
Hi,

The middle blue led is the charging indicator, sounds like you have (at least) a bad battery, remove it, plug in AC and try again, if no good, remove the HD and repeat, if no good, remove/replace the ram and repeat, if still no good, your mainboard is cooked.

Thanks,

Adam.

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Alright, not sure if this will help, by my understanding is that you are saying that when you power the computer using the power supply adapter, nothing comes on? Then when you have your battery installed on, then there are lights blinking from your battery charger LED amount of times. In this case there are no promblem with your laptop and it is your power supply adapter that is damaged and will need to be replaced. It is not charging the battery. The battery is still good, but does not have enought charge to power up your system. You can find a charger on ebay for a good reasonable price compare to getting it from Hp. I hope this can help you.

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I have had this issue with a few HP laptops.
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Maybe try unplugging the power adapter and battery, press and hold the Power button for 30 seconds, pug in the battery and power adapter. In Windows click Start > Settings > Control Panel > Power Options. Click on Power Meter Tab and check the startus of the battery (i.e. Charging, not present etc)

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Computer won't power up


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(point remote at Digital Camera and press power button, you should see it blinking in the viewfinder)

If the blue ring does not light up. Check Adapter
If using a generic adapter and the power light on the adapter goes out when plugged into laptop- it is a shop repair.

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Free Pulse


The following procedure will re-establish the communication link between the Headphones and the Wireless adapter, this is called "pairing". Before you start please make sure both the headphones and the wireless adapter are fully charged and turned off.
Note: The headphones and the wireless adapter come pre-paired from the factory.
1. Press and hold the power button on the headphones. See Figure 1.
headphone.jpg
Figure 1

2. Continue to hold the button down until the LED starts flashing red/blue in an alternating pattern. Release the button when the LED starts flashing red/blue. See Figure 2.
headphone-flash.gif
Figure 2
3. Once the headphones LED is flashing red/blue, press and hold the power button on the wireless adapter. See Figure 3.
receiver.jpg
Figure 3
4. Hold down the button until the LED starts flashing red/blue in an alternating patter. The LED will blink blue, then turn off for a few seconds then blink red/blue. Release the button when the LED starts flashing red/blue. See Figure 4.
receiver-flash.gif
Figure 4
5. Once both the headphones LED and the adapter LED is blinking red/blue, press the volume up button once on the headphones. See Figure 5.
headphone-volumeup.jpg
Figure 5
Once the headphones is paired with the adapter, the LED on the headphones will blink blue once every two seconds. See Figure 6.
headphone-flash2.gif
Figure 6
When the adapter is paired the LED will be solid blue. See Figure 7.
receiversolid.jpg
Figure 7
The adapter may continue to blink red/blue for a few seconds even after the headphones LED starting blinking blue. This is normal; the adapter may take a few additional seconds before the LED turn solid blue.
Once the headphones and the adapter are paired, it is not necessary to pair them again even if the batteries on both units are completely drained.
Additional Note: Repeated pairing will not improve the sound quality or give the headphones and the adapter a cleaner connection.

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