Question about HP Pavilion ze5185 Notebook

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Replaced the dc jack because it would not run on the charger. Still won't charge or run on charger. Is there a voltage controller on the motherboard, because the charger puts out 19.5 static volts a

This laptop would not charge, so I changed the dc jack. It still won't charge or run on the charger. It's a new charger. Does it have a charge controller on the motherboard that regulates the voltage, because the charger puts out 19.5 volts?

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  • 197 Answers

Try taking out battery and plug in power. If it works, battery is faulty. If not,
Try taking out your hard disk plug in power, if it works, hard disk is faulty. If not,
Try taking out memory card, if there's a sound, memory card faulty. If no sound, it's your motherboard that is causing the error.

Note: If machine is under warranty no need to pay for the repairs.

Posted on Jun 03, 2009

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Posted on Jan 02, 2017

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Older model phone charger


4 important points or facts to note with chargers are as follows:
1. Supply voltage ~AC/Voltage (input, say 110Vac, 220Vac)
2. Output voltage (VDC)
3. Output ampere rating (amps)
4. Jack type for connecting charger to your phone.

What this implies is that you have to get your old phone to a store where phone chargers are sold or can be purchased (because of the connector jack)

However, you need to know the specific OUTPUT charging voltage (indicated as DC) and current for your phone

Oct 04, 2017 | Cell Phones

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Plugged in not charging


There could be several things wrong. You could have a broken DC jack on your motherboard. To prove this, wiggle the DC jack with the adapter plugged in. If the charging light comes on when you wiggle the jack, then your jack is broken. You could also have a defective AC adapter.

Jan 06, 2013 | Toshiba Satellite C655-S5125

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My acer aspire 7720G shut down random


Wait a minute. What?

From what I read;
1) One wire of the AC adapter (Charger) is hot to the touch.
'.....when I touch the charge one part of the wire is very hot."

2) AC adapter checks out as far as voltage is concerned.
"I tested the charger voltage and everything is ok."

3) "Sometimes when I touch the charge appear the icon...Could it be the charger broken wire?"

Does this mean, "Sometimes when I touch the AC adapter (Charger), the battery icon appears."?

Battery is CHARGING icon?

Could it be a broken wire in the power cable TO charger?

Uh, yeah.

1) AC adapter NOT plugged into the DC Power Jack, plug the power cable of the AC adapter into power.

Multimeter set to DC Voltage, and proper scale, red Positive lead to harness wire that goes to DC Power Jack's center pin;

,black Negative lead of multimeter, to wire that goes to DC Power jack's inside cylindrical metal shell;

Now gently wiggle the cable from the AC adapter, TO the DC Power Jack of the laptop.

Do you get an intermittent reading?

2) Also, how did you replace the DC Power Jack? What steps did you take?

http://www.dcpowerjacks.net/catalog/index.php?main_page=product_info&products_id=1291

Did you reuse the wire harness, and solder it to the DC Power Jack?
Have a lot of experience in desoldering/soldering?
What tools did you use?

25 Watt soldering iron?
.025 or .030 rosin core solder?

Desoldering Tool, or Desoldering Braid? (Solder Wick)
Side Cutters instead, and slightly shortened the wires of the DC Power Jack's harness?
(Then tinned the wires, and soldered the wires of the DC Power Jack harness, to DC Power Jack?)

Damp sponge, and cleaned the well tinned No.2 chisel tip, of the soldering iron, frequently? Used rosin solder flux?

Center pin wire (Positive), of harness cable TO DC Power Jack, was soldered to the center pin of the DC Power Jack?

Negative wire of cable TO DC Power Jack, was soldered to the inside shell of the DC Power Jack?
(Cylindrical shell, inside the DC Power Jack, that surrounds the center pin of the jack)

Sure there are no cold solder joints?

Not trying to 'browbeat' you, just am curious.

1) IF you are SURE you have the polarity correct, of the wires in the harness cable, that goes to the DC Power Jack;

,and you are SURE there is no broken wire, in the cable from the AC adapter (Charger) TO the DC Power Jack;

,and you are sure you made good solder joints;

I suspect the power correcting chipset on the motherboard, to be bad, or perhaps a Diode.

One example of the chipset I am referring to. This one is used in a lot of laptops. May not be used in yours, but gives you something to refer to when looking for a bad chipset, in the power stage, on your motherboard,

https://docs.google.com/viewer?a=v&q=cache:oER5NNz8cwcJ:www.fairchildsemi.com/ds/FD/FDS6675BZ.pdf+Fairchild+FDS6675BZ&hl=en&pid=bl&srcid=ADGEEShOhWPjm_M-ROHme4iEMrztCTOd-28jNiy1hVLQQh_VOyv8zcXEVDB_iTQA6MuZO88UmRkDgjyW9j4CP2aIJ-4DS-h6JNM3lvxldeApQeecmz_DADCw1s7tmNLxfPknqX14SZP6&sig=AHIEtbS_rYUAeo_8rB9YHkW05ZjLqeH4Jg

Usually when bad the top of the chipset will be blackened, or bubbled.
A Diode is a one way valve for electricity. When they go bad it is visually obvious.

http://www.mouser.com/ProductDetail/Vishay-Semiconductors/BA479S-TAP/?qs=j6bfm3UnQnzfWUXqYnsQ9LdHLayQ%2fSwFGlGUXEDAB5w%3d

Post your findings in a Comment.
Regards,
joecoolvette

Jun 10, 2012 | Acer Aspire Computers & Internet

1 Answer

Dell laptop latitude C640 model pp01L will not charge or boot


1) Check the AC adapter (Charger) to see if it is putting out 20 Volts DC.

Use a multimeter with the Function knob set to DC Voltage. If just a symbol, the symbol is a dotted line over a solid line.

If there is a multiple setting for the Function knob with DC Voltage, set it to the 0 to 50 Volt (DC) scale.

If you do not have one, or access to one, an economical yet reliable multimeter, can be purchased for as little as $10. (Less in some places)
A multitude of stores carry them. An auto parts store is but one example.
Analog or digital doesn't matter.

http://www.laptoppartsnow.com/uhsdfsrzdgir779.html

This is the DC Power Jack. May be labeled as DC IN on the laptop,

http://www.discountelectronics.com/index.php?l=product_detail&p=14640

I want to show you it, and have you look at the cable end, that is coming from the AC adapter (Charger) TO the laptop.
(To the DC Power Jack)

See the 3 pins? Arranged in a triangle? Note the socket holes in the cable end.
The pin that sits all by itself on Top, is the Positive pin.
The two pins down below are Negative, or Ground, pins.

The Positive (Red) probe lead of the multimeter, is inserted into the single socket hole, in the cable end.
The Negative (Black) probe lead can go into any of the two bottom socket holes.

Read very near 20 Volts?
Have an assistant wiggle both cables. First the one from the charger To the laptop, then the one from the charger to the wall receptacle. (Or surge protector, actually)

2) Charger checks out?
Go to the DC Power Jack.

You may wish to skip checking the charger out first, and check the DC Power Jack, if you Know that the charger is good.

Battery removed see if you can wiggle one of those 3 pins around.
Be gentle, use a pencil if available.
ANY perceptible movement means a Problem.

Looking back at the second link above showing the DC Power Jack, note the metal prongs coming down towards the bottom of the jack.
There are 4.
2 on each side.

Note the 3 long pins sticking down towards the back of the jack.

The 4 outside prongs made from the outer case, are used to anchor the jack into place. They go down through holes in the motherboard, and are soldered on the opposite side.

There may be Ground attached to the case through these prongs also.

The two pins sticking down towards the Back of the jack, are also Ground pins. (Negative)
The single pin by itself is Positive.

A) IF, any of the pins wiggle, the jack is broken, and needs to be replaced.

B) IF, the outer shell of the jack wiggles, the jack May just need to be soldered back into place.

(Could also be an indication of more damage than appears to the eye)

Same thing for the single Positive pin solder joint.

Charger checks out, DC Power Jack checks out, the problem may be a bad power sensor chipset.

This chipset senses when the laptop battery needs a full charge, or a trickle charge, or no charge.

This means it also will sense when the laptop is to be run straight off of the charger, and not the battery.

Usually means motherboard replacement, unless you have access to the chip, and means to replace it. (Soldering tools, and technique)

Appreciate it if you would keep me apprised as to what you find.
Post in a Comment.

Regards,
joecoolvette

Jan 23, 2012 | Dell Computers & Internet

1 Answer

My computer won't turn on and when I plug it in the charging light won't come on


Please check the adpter output voltage with multimeter in DC mode.
If output voltage is good then check any contact problem of the power jack with laptop dc jack for proper contact.

Try to power on with only ac power supply by removing the battery.

Jun 14, 2011 | Computers & Internet

2 Answers

Laptop battery is dead and it will not run on DC power


Sounds like your power supply unit (PSU) is broken, do you get any lights come on when you plug in the DC cable and try to switch on?

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Hp pavilion entertainment pc wont charge or turn on


Check the charger is throwing out the correct voltage at the DC jack
Do you get any lights flashing at the charger? If you do it indicates that power is not completing the circuit and is being "spat back". This would indicate a damaged charging circuit or possibly a loose power jack socket, if it feels loose as you plug it in, you may need to change the DC socket

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HI there,

When a laptop/netbook will run on the A/C Adapter but the battery won't charge, there are only 3 things that can be wrong.

1. The battery is dead (replace the battery)
2. The A/C adapter's charging system is not functioning but the power function is. (replace the A/C adapter)
3. The DC power jack which is where the adapter plugs into the laptop is partially failing, providing power but no charging. (replace the DC jack)

Try to find a friend with an adapter/charger that fits your netbook and see what happens with that first. If that doesn't work, try to find someone whose Netbook takes the same battery and test if yours will charge in their laptop. After that, if your battery's not dead and you have a working charger, it's the DC jack and that costs about 80 to 100 to be replaced. They have to take apart the netbook, remove the jack and solder on a new one.

Good Luck

Marcus

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check first your charger if have output voltage. if out ok. check the dc jack of your player.

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Its problem of DC-IN jack where you hook ac charger. This jack needs to be replaced.
Let me know exact model of camcorder to provide you part number of DC-In jack.

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