Acer 7520 - gone totally dead

Hi all

I have (had until last week) the above laptop. Great machine for what I use it for. A month ago the charger broke and wouldnt charge it up. So I made the huge mistake of buying one off ebay for 7 pound or so. Last week i touched the ebay charger with my foot and the computer just went off. changed the fuse and tested it with a muti meter but still no power going to the laptop. Thinking it was the charger that had broke I went out and bought a universal one from the local computer shop. I got home to try it and still the laptop wont fire up.

is there anything else I can try before putting it on ebay as spairs or repair?

 

Have you performed a power reset to drain any charge from the capacitors?

 

I dont think so.

How do i do that?

Thanks for the reply by the way

 

Hang on. What fuse, the mains plug fuse ?

What did you test with a multimeter, If there is no DC output voltage from the adapter then the adapter is dead. But if the battery was inthe laptop it should have taken over so perhaps the adapter took the laptops power circuits with it.

So what did you test with what and what did you find !

 

the fuse in the plug attached to the charger is what i changed, then i checked the plug end for voltage but got a zero reading, this is when i went out and bought a universal charger which works fine on my girlfriends laptop (also a acer 7520).

The battery was in the laptop at the time of the shut down.

 

You should normally find whatever DC voltage is mentioned on the adapter between the inner core and outer contact of the plug. If not it seems likely the adapter failed.

If the laptop had a charged battery in it it should have just carried on running. Worth trying removing the battery, holding power switch down for 30 secs and then re trying on battery. otherwise you have a motherboard repair to get done

 

The same thing happened to my old Acer Aspire 5740G laptop. I was studying in the library with the power adapter plugged in & with the battery in the laptop and the laptop randomly shutdown. Nothing would power up, no lights or anything; so I tried to power reset it from Acer's instructions, but that did nothing.

It turns out that the power adapter was defective (extremely hot) and fried the power circuits in my laptop; however, I got a replacement laptop from newegg.com

 

Hi all

Thanks again for the help.

I have just plugged the universal charger in and held the power button down for 30 seconds but nothing happens. and done the same without the battery in but still no power up.

Also will i have to have the hard drive in to try this test as i took it out so i could get some files off there.

 

Sadly this can happen occasionally whoever made the adapter . . but it is hard to make a safe and reliable adapter for $2 which is the likely factory cost of a £7 retail adapter

 

So do i need a new motherbourd?

If so, where do i get one from?

What do they cost rougthly?

 

I think you can forget the adapter if there is no DC voltage coming out of it.

If the laptop wont respond at all with a previously charged battery in it then at the least a surface mount fuse has blown on the board and at the worst you have fried the board.

 

wow £199.99

Think I might as well sell it on ebay for a few quid and buy another one.

Thanks for the help guys

Any ideas on where i can get a good deal on a replacment?

 

It is worth getting a local repair shop to have a look as fuse /power regulator repairs are sometimes possible.

I don't know of any source of new motherboards that would allow an economic repair. You can look at e-bay etc to see if a 'repaired' one comes up. Even if the motherboard is aquired for £150 say the cost of the repair by a workshop is going to top £250. It is worth checking if Acer UK offer a fixed cost repair out of warranty as this may end up a bargain if they replace the whole board.

 

Normally a power reset is done without the A/C adapter or battery hooked up, holding the power button down for 30 seconds. Then connect an A/C adapter with the known proper output and try to start as you normally would.

 

Just tried that an still nothing happens.

think it must have blown the bourd.

thanks for the help guys.

 

I would be tempted to post some feedback on the cheap adapter site