Having problems with your HP Pavilion zd7020US Notebook ?

Laptop won't power up without battery, needs 135W adapter

\015 I have a Pavilion zd7020us 17" widescreen laptop, got it used from a friend, no battery or power adapter. Had to replace the DC power jack, that went in fine. The repair required a complete disassembly, I followed HP's PDF manual, and successfully got everything reassembled. I tried to power it on with my 90W Asus power adapter, but no joy. This works fine with another 15" HP notebook I use, it has the correct size coax plug and voltage, but I think it doesn't need as much juice. HP's specs call for a 135W adapter for this model, this may be the problem. The LEDs come on for a few moments, then only the power and plugged in LEDs. No fans spin, screen image or HD spin-up. Will it power up without a battery installed? And I'm guessing the primary problem is my 90W adapter isn't enough power? I want to be sure before I spend $$$ getting an adapter and battery. This is just a backup for my regular laptop. Read poor customer reviews of the HP original adapter on HP's site, they seem to have issues. Looking to get a decent 3rd party compatible supply and battery, suggestions? eBay?\015

Answers :

The ASUS power adapter is below spec and it may damage the adapter because the HP is drawing 45 W more power than it can deliver and will cause it to overheat.
\015\012The 17" HP requires 18.5 or 19 volts depending upon the model of the HP laptop (check the power requirements on the label on the bottom of the laptop). If the ASUS adapter doesn't deliver this voltage, it most likely won't power up the HP laptop.
\015\012Use the power supply/adapter from the other 15" HP. If this HP's adapter has a voltage output of 19 volts and the 17" laptop requires 18.5 volts, don't worry a voltage difference of 0.5 volts, the only problem is whether the power plug will fit into the power socket of the 17" HP laptop.
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