Question about HP Pavilion zd7000 zx5000 zv5000 presario 3000,R3000 Series 120W Laptop AC Adapter-360699-001 CD-ROM Drive
Verified power supply cable and battery and are good. (troubleshooting)
Power button lights on and few seconds later turn off. Display black always. No noise comes out of the fans. Removed battery waited over an hour and connected laptop directcly to an ac plug and did same thing.
Removed & reseat ram memory card and plugged directly to ac, no luck.
Heard there is a service alert by HP but can´t find site to verify it.
It is true there is a class action suit about this laptop zd 7000 Pavillion, if so, where to contact attorneys for plaintiff.
The PSU can in fact turn it self off !
with Pwr_ok pin.#8
the PSU if it detects, power bad, it will set Pwr-ok pin FALSE
and the MOBO shuts off
the fans run on 12vdc, if the power supply fails at 12vdc
the PSU detects this in 100ms or less (ATX spec, read it?)
and the MOBO see pwr-ok false and then shuts off the supply
on the power on pin of PSU, pin 14
all ATX supplies do that. and more.
why not try a good PSU.
also on my MOBO i can have the PSU cut power (i can change that in my ASUS BIOS) i can cut power with fans dead, too.
even set the RPM that the cut point hits. say 100 rpm cuts.
that trick above, do this more easy
just pull the ling cord, press power button for 15second
this discharges everything, for fresher start.
that too is SOP, ATX standard operative procedures.
we can bench test the ATX with our test adaptor and voltmeter
i jumper the power on pin to ground. pin 14 to 15
and all power pins go hot, they go to spec volts
if not the PSU is TOASTED, (as all do say in about 10 years)
sorry no PSU on earth ever lasted for ever.
most are 20 year max life. (by design limits of reality !)
Witch hunts a day one, wow:
there is no service alert.
its for lap top batteries, (really all love to short, or catch fire, for sure dropped)
first find cause. then point fingers (blame)
(why do witch hunts first how odd is that)?
Posted on Apr 17, 2017
May be this sound crazy, but helpful to me in many cases.
Unplug all easily detachable parts and press turn On key for 20 to 30 seconds. Again resemble it and try to turn on. I hope it will work fine. if not don't waste your time and contact to local or online repair center.
For any Tech Query: +1 (844) 355-5111 (toll-free)
Posted on Apr 17, 2017
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Posted on Jan 02, 2017
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
SOURCE: HP laptop, wont turn on...
I have the same model with the same symptoms in for repair. This is a motherboard issue and requires a reflow of the GPU and chipset. It has nothing to do with the LCD because the buttons don't react when the laptop is "turned on". The touchpad turn on/off button does not react when pressed, the same is with the wifi, volume and mute buttons.
The problem is in a poor solder and a cracked/oxidized contacts due to heat buildup.
Posted on Apr 15, 2010
I had a similar though somewhat different problem. My zd7000 was plugged in but it was oscillating between charging the battery and running from the battery. In the past I'd adjust the jack position and life was good - this time nothing mattered. I turned the laptop off and noticed that the charge light came on and stayed on - I guessed something was freaky with the battery so I switched to my spare - the charger light came on, I turned on the power I had a brief power on followed by zzzzttt then everything died. I could smell the stench of electrical burning. I disassemble the whole laptop and removed the motherboard - the back of the power jack is burned. A new jack is $10.
If I had to guess, I"d guess you have a bad jack. I've seen offers to repair this on the net for $100. If the offer is legit, I'd rather pay the bucks - theres only 5 billion screws in the laptop - plus the risk of static discharge damaging to boards or the pain of getting the processor heat sink out without damaging the processor and then getting heat conducting "grease" between the processor and the heat sink when you put it all back together again. I figured my unit was dead anyway, might as well see if I could find the issue. Now I need to get a new jack - and see if I can get it all back together again...
Posted on Dec 13, 2010
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