Question about HP Hewlett Packard ALL-IN-ONE-TouchSmart IQ504t- Intel Core 2 Duo T5750 , 4GB DDR2, Intel Media A... PC Desktop
With the new jack soldered in i plug the power supply in and the LED blinks once (white) then goes off. Unplugging it from the wall gives again a short blink, a few seconds after unplugging. No short circuit, tested that. Also tried a different power supply, no changes. Powers up, fan, hdd and CPU seem to run or warm up, but no display, no bios. According to HP support the power LED should either stay off (no power), stay on (power, and battery fully charged), blink white (faulty powersupply/low voltage) or blink yellow (battery charging) What does it mean when the light comes on but turnes off right away? Only coming on once more when unplugged and the voltage is dropping. Led in Capslock key blinks once, is supposed to mean a faulty CPU. I dont want to believe that... Any isuggestions are most welcome. B.t.w. when i received the laptop, a small metal part from the old broken DC jack was loose and ratteling inside, while the battery was attached. I guess this could have damaged something? Am currently running out of options... Rob.
No Rob, you aren't running out of options. You just haven't diagnosed far enough, because you don't know the path.........hence where I come in.........
Using the HP Pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's, as an example,
There are two Power MOSFET's being used.
The Fairchild Semiconductor Industries - FDS6679 - Power MOSFET, and the Alpha & Omega Semiconductor LTD - AO4407 Power MOSFET.
Both of these P.MOSFET's are Obsolete. However there are cross reference examples given. Let's look at two of these examples, and also note the cost,
One dollar and one penny - USD
78 cents - USD
Surface mount soldering 101,
For additional questions please post in a Comment.
Posted on Apr 23, 2013
Testimonial: "Excellent advice. Clear, to the point and accutate!"
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: HP Media center 1170m
Hello Moneymakey, have you sorted out your machine's problem? I had the same problem on my HP t350.uk machine but with different
symptom. But later on, the machine occasionally ran into a freezing
state, not responding to any input. So a
few days ago, I turned off the machine, and did some connection checking on the
motherboard. But this time, the flashing never stops flashing, even after I
have unplugged almost everything. The flashing stops only after I unplug the power to the
motherboard. By manipulating this power cable to the motherboard, I can manage
to turn the flashing to the constant flashing, but the machine still can’t be
turned on. I was just wondering this event sequence would inspire any
useful trouble shooting thoughts Dr Q Mei email@example.com
It first appeared one year ago when my daughter switched off the machine (everything was fine up to this point) at night. The next day, the machine could not be started but she noticed the machine's power supply light was flashing. It was in this state for a few hours as she does not know what to do. Then suddenly the flashing stopped and machine can be started and everything returned to normal.
Then about half a year ago, I turned off the machine to add some memory (from 512mb to 1.5gb) and could not start the machine while the power supply light was flashing. My daughter told me the trick but it did not work after a few hours. So I left the machine connected to power over night. Next morning, the flashing was gone and everything returned to normal.
Hello Moneymakey, have you sorted out your machine's problem?
I had the same problem on my HP t350.uk machine but with different
But later on, the machine occasionally ran into a freezing state, not responding to any input. So a few days ago, I turned off the machine, and did some connection checking on the motherboard. But this time, the flashing never stops flashing, even after I have unplugged almost everything.
The flashing stops only after I unplug the power to the motherboard. By manipulating this power cable to the motherboard, I can manage to turn the flashing to the constant flashing, but the machine still can’t be turned on.
I was just wondering this event sequence would inspire any useful trouble shooting thoughts
Dr Q Mei
Posted on Oct 14, 2007
Remove the power supply after everything is unplugged and take it to your nearest electronics store. They should have a tester there. This is probably the problem.
Posted on Jul 01, 2008
SOURCE: No power to a SR1420NX.
Power supply light on or flashes
Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure:
This product contains components that are easily damaged by ElectroStatic Discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap that is connected to a grounded surface, like the metal frame of a PC.
Posted on Dec 12, 2008
SOURCE: BLINKING POWER LIGHT
When you restart your notebook do you have a blinking cursor when the system freezes? It sounds like you need to reset your BIOS. To do this, power off then on your unit, Press F10 to enter BIOS settings, and then F9 to reset the BIOS to default settings. (Your functions may be a little different but you can read your menu to see which function key to select.) Once this done, select "Save and Exit BIOS" This should get you going. As for the blinking light, sometimes this happens when the battery is not holding a charge. If your battery is new, try the BIOS reset first and comment on your results. I can guide you through the battery reset process, if needed. Good Luck.
Posted on Feb 02, 2009
SOURCE: Hp desktop wont start
I think you have more than one problem there. Take it to a local PC repair shop and have them check it out. Five years is a good age for a computer though so you may want to think about buying a new one. Best of the Irish Luck to yer.
Posted on Sep 16, 2009
Tips for a great answer:
Apr 05, 2013 | Fujitsu Computers & Internet
Sep 07, 2012 | Samsung Computers & Internet
Aug 28, 2012 | HP Computers & Internet
May 21, 2012 | Samsung Computers & Internet
Apr 05, 2012 | Computers & Internet
Jun 28, 2011 | Dell Inspiron 1525 Notebook
Jan 20, 2011 | Balance Computers & Internet
Feb 18, 2010 | Lenovo 3000 N100 Notebook
Nov 19, 2009 | Gateway MT6821 Notebook
224 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: