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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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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Motherboard no power,19v ok 1st pchannel fet not fuction, PQ35 TPCA8109 p-channel mosefet sorse and gate 19v coming drain suply not coming,pls give me solution.


19 Volts? Input? Sounds like you're dealing with a laptop motherboard, and perhaps an Acer Aspire. Power comes on now, but battery not charging? Is there a PQ36 power MOSFET connected to the drain of the PQ35? If so suspect it to be bad. Also look in this power circuit area at all of the solid capacitors, for this circuit. Any black/brown/burnt looking? (SMD style. Surface Mount Device. Silvery rectangular shaped solid capacitors, and have a band across their middle) Also; IF you are not testing a power MOSFET correctly it will show bad.

ALSO:
Easier to replace the motherboard yes, but;

A) Where will the next generation of true electronic repairman/woman come from? Already we have nothing but a bunch of 'Parts Changers'. NOT tech's. Replace the motherboard; get a new laptop; get a new computer, etc.

B) That Power MOSFET costs about 97 cents USA.
88 cents for the SMD solid capacitors, probably.
Compare that to a L16.99, or L66.79 motherboard.

I commend you are at least trying; thanks!

Regards,
joecoolvette

Dec 24, 2015 | Computers & Internet

1 Answer

Att 882 power cord connector loose


If the plug (male) is smaller than the socket (Female) then it's probably the wrong model. You mentioned replacing the cord - be aware that in those low voltage power connectors there are a whole bunch of sizes. - you may have picked up one that is marginally different (hence the looseness) - electronic stores (Radio shack etc) usually carry switchable supplies (You need to know whether original is 3V, 5V, 6V etc...), and size of connector, and polarity (Whether it's positive on the centre or the outside. ) ALternatively, ring 1-800-722-9125 (ATT phone customer service). IF you look at something like
Amazon com Universal AC Adapter 15V 16V 18V 18 5V 19V 19 5V 20V 22V 24V... on amazon you will see what I mean by the diversity of connectors. Unless you have the original for comparision, it might be a crapshoot (i.e. wrong connector could "smoke" the phone - ATT customer may be best option.

Apr 04, 2014 | AT&T 882 2-Line Phone

2 Answers

ASUS adapter for 501J series has a short in the cord. Am in need for a Model # ADP-65JH Input 100-240V Output 19V - 3.24A. What do I need to order. E-mail: [email protected]


You need a mains adapterthat has Input 100-240V Output 19V - 3.24A and the input plug that fits into the power socket of your laptop. It does not need to be from ASUS.

Google search the Internet for a suitable power adapter, make sure the output voltage is the same and the amps is 3.24 or higher.

Mar 11, 2011 | ASUS Televison & Video

1 Answer

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.

Sep 10, 2010 | Computers & Internet

1 Answer

I have a Toshiba Satellite laptop. The original adapter is 100V, 1.l3A input and 19V, 3.95A (DC). Can I use an adapter with 100-240, 1.1A input and 19V 3.42A output?


The input voltage doesn't matter - the 100-240 just means the adaptor will work in most countries.

The output voltage is the same, and the current is only slightly lower - so as long as the plug to the laptop is the same AND has the same polarity [+ and - in the same places on the plug] then yes, you will be able to use it.

Jun 19, 2010 | Toshiba 200W SERVER POWER SUPPLY...

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.

Mar 15, 2010 | Computers & Internet

1 Answer

Compal RM CY25 Laptop. new battery won't charge.


Unfortunately, the charger socket in the motherboard does not drive electricity to the battery to get re-charge it. It is a typically motherboard problem(Do not confused with a power jack problem). I can not be repaired it.
Two options work always hook with power adapter or get ride of her.

Jan 30, 2010 | Computers & Internet

1 Answer

Unusual Power Requirement


Should not be a problem, the theory here is Volts * Amps =Watts

5V * 2A = 10w

The alternative is to get a LM7505 ($1 or 2) from radioshack or any electronic supply and regulate the 12v down to 5v. its about 1/2 square IC chip.

Pardon my ASCII:
[_]
input 1.7V - 35V ________| | |_____ +5v (+/- 1%)
Pin 1 Pin 3

will accomodate 1 Amp (1.25 if heat sinked) for the CMOS version, slightly higher for the olde r(less effecient) version

The other pin is ground. OF course you will want to check the specs and pin assignment for the brand you buy, these are typical.

TechieJon

Apr 18, 2009 | Computers & Internet

2 Answers

Battery not charging


It could be the power cord if without the battery the laptop will not power up with the cord.

However, if it does power on, the power cord is fine and it could be a motherboard problem

Mar 05, 2009 | Acer Extensa 4620 Notebook

1 Answer

No Power Up State


CHECK YOURE POWER HOOK UP ON THE BOARD MAKE SURE THEY ARE HOOKED UP ON THE RIGHT ONE IF THEY OR OFF ONE PEG IT WILL NOT POWER UP

Aug 21, 2007 | Dell (58GGC) Motherboard

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