Question about Dell Inspiron 500m Notebook

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No power laptop not powering up. I meaured 19v at the input to the motherboard and 5v at the on switch,but without diagrams i cant get any further. Might there be any components known to be troublesome? (dell inspiron 500m) thanks

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Re: no power

Measuring the voltage outputs without applying a load doesn?t eliminate the adaptor as the problem. You also have to know how may amps it can supply as well. To answer you specific question common problems are defective battery, A/C power supply and my favorite?s defective power connector or circuitry inside. When you plug in the A/C power adaptor do any of the LEDs light, up? Does anything happen? Also try removing the battery, plugging in the A/C adaptor and try powering up. If this doesn?t work please supply answers to the above questions plus any other pertinent information you may have. As always please don?t forget to rate the posting but please wait till after we?ve finished.

Posted on Jan 16, 2007

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Here below are possible causes and troubleshooting steps of laptop that can't power on, hope it may help:
Possible causes:

1. AC adapter failure.
2. Power jack failure.
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Possible troubleshooting steps and repair solutions:
1. Test the AC adapter with a digital multimeter. It's possible that you have a failed AC adapter. If you don't have a multimeter, test your laptop with another known good AC adapter.

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Dear sir do you happen to have circuit diagram for acer aspire 5570 , the 19v dc power in connection pin broke in two. i need the schematic diagram for this power system board which lead to the...

Connect the adapter to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard.
This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

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I get a 110v ac shock from my cf27 .when i use the manes power pac. where do i start looking for the short.

hmm this could be anywhere, But I would start at the power pack first. If that has a short then it can and will kill your laptop. Only 5v should be running through the motherboard. The PP brings 110 to the plug which is then rectified down to 5v so anywhere from the PP to the input plug on the mother board could be causing it to be live.

Please rate my help++++Thanks for using FIXYA

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1 Answer

Laptop will not stay powered after replacing dc jack

Dear friend,
You must have some knowledge atleast about the various kinds of power supplys used in different electronic appliences. Otherwise you can't move further. The power supply generally goes to various ICcs and switching devices in the motherbord for differnt purposes. It varies from manufacturer to manufacturer; model to model and so on. What about your status in electronics? The output voltage of the adapters - and thus which in the motherboards- varies form company to company and model to model. You can veiw it on the adapter as ' OUTPUT:19V, 4.74A' and like this. It will be the reading that you must get with the adapter. If you don't get this voltage -without plugging it in the AC outlet- the adapter is faulty. If you don't get the voltage mentioned in the adapter on the motherboard- if the adapter is good- then it is somthing wrong on the motherboard.Reply if you need further assistance.

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Your colleagues are correct, the problem with laptops is that the motherboard and powersupply are integrated,
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What you,ve actually done is put an input current into your motherboard via the USB.
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If you take this in for repair, you,ll be looking at £75+ Or $150+ Depending where you are. Just to Be Looked At.
For them to possibly charge you an additional £200+ Or $400 for a new motherboard.
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Mike @ Compurepair.

Posted @ 09.20 AM ( G.M.T )

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