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Laptop help please

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I have an HP Pavilion zd8000 with the following problem and hope someone can have a stab as to where the problem lies - ie the battery or the charger. Battery will charge via the charger if laptop … Read More
J9STL Avatar
7y, 7m agoPosted 7 years, 7 months ago
I have an HP Pavilion zd8000 with the following problem and hope someone can have a stab as to where the problem lies - ie the battery or the charger.

Battery will charge via the charger if laptop is off - ie charging light shows on the front panel. (& it does charge up)
Battery doesn't charge when laptop is on (charger plugged in ) & the on-screen icon shows working from battery.
Laptop works on battery for up to an hour before battery is drained.
Laptop won't boot with just the charger connected (battery removed).

Which is faulty? the battery or the charger?
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J9STL Avatar
7y, 7m agoPosted 7 years, 7 months ago
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#1
It looks like the battery is not strong enough to hold the charge and keep the laptop running. is my guess :)
#2
Joey Bloggsy
It looks like the battery is not strong enough to hold the charge and keep the laptop running. is my guess :)


but it will run for an hour on so on battery only.....
don't understand how the charger can charge it when off, but not when it's running??
1 Like #3
I'd guess it'd be your charger as they would still normally boot with just the charger plugged in.

Perhaps it's not kicking enough voltage out, Although enough to charge the battery, Perhaps very slowly too I'd imagine.

Also usually cheaper to replace the charger than the battery.
#4
I would say the recharge circuit on the battery is gone.

And if I remember correctly, the zd series is the big 17" monster thing, with P4 chips, so it will consume some power!!
#5
I had a voltmeter to the charger output & it is giving 19v (as per spec, I believe).

agree the charger is the cheaper option
#6
aircanman
I would say the recharge circuit on the battery is gone.

And if I remember correctly, the zd series is the big 17" monster thing, with P4 chips, so it will consume some power!!


that's right, the fan goes all the time it's on

but why won't it boot from charger only without a battery in?

could both be bust?
1 Like #7
J9STL
that's right, the fan goes all the time it's on

but why won't it boot from charger only without a battery in?

could both be bust?


I cant remember cos it was a good 3 years ago, but I think the charging circuit needs to be hooked up because of the power it uses. The block on the adaptor is huge so it does need to give off some watts. We needed to keep the battery in when displaying because it wouldnt power on.

Im 90% its the battery, the other ten percent could be the recharge circuit in the laptop itself.
#8
re the laptop recharge cct, it must work (or at least sort of work!) cos it will charge the battery when the laptop is switched off



thanks for your inputs guys :thumbsup:
#9
morning bump for the techy- minded with an opinion on my laptop woes......
#10
anyone help?
it's either buy a replacement battery @ £40+, or a new charger for £20 +, or bin it & start looking at a new one!
#11
J9STL
anyone help?
it's either buy a replacement battery @ £40+, or a new charger for £20 +, or bin it & start looking at a new one!


Buy both and send one back!
#12
J9STL
I had a voltmeter to the charger output & it is giving 19v (as per spec, I believe).

agree the charger is the cheaper option


It's not as simple as that, your multimeter does not act as a load, that's (possibly) not the voltage that the transformer is providing under load.
#13
pghstochaj
It's not as simple as that, your multimeter does not act as a load, that's (possibly) not the voltage that the transformer is providing under load.


that's a good point :thumbsup:
but which is faulty? the charger? the battery? the laptop charging circuitry?

there's only one way to find out..............fight :w00t:

seriously - I don't want to chuck money away on an item I don't need, it just doesn't seem clear cut what's faulty.....
#14
J9STL
that's a good point :thumbsup:
but which is faulty? the charger? the battery? the laptop charging circuitry?

there's only one way to find out..............fight :w00t:

seriously - I don't want to chuck money away on an item I don't need, it just doesn't seem clear cut what's faulty.....


I would be siding on a battery or charging circuit, more on the charging circuit to be honest, unless the battery provides the charging circuitry which might explain why it doesnt work when the battery is not in.

If you order a battery online, and it does not sort the issue, you can send it back under the distance selling regs, give that a try.
#15
I still think it's the battery , it's on it's last legs and when you put it under a load it gives way.
This is just my guess and I would hate for you to buy the wrong item sir :)

Edit - If someone can help with the pcworld repair system ( I've never used them) , might be worth looking into.

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