Laptop wont turn on with AC adapter plugged in

April 24, 2019 at 12:08:58
Specs: Windows 10, 2GB
My Acer laptop will not turn on with the AC Adapter plugged in and batteries removed but seems to be charging the batteries when inserted as the battery led indicator flashes amber and the AC Adapter shows a green light in both cases. Which is the faulty component? Adapter? battery? motherboard? or other component(s)?

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#1
April 24, 2019 at 13:03:47
Test using another known to be good AC adapter. Not unknown for adapters to fail. Often put out a lower voltage than it should but enough to make LED indicators show things are ok - when they aren’t.

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#2
April 25, 2019 at 03:55:07
does it turn on if you remove the battery, but leave the AC adapter plugged in?

i5-6600K[delid]@4.9GHz/4.4GHz cache@1.504v | 2x4GB Crucial-DDR4-2400CL17@CL12-15-15-28 1T 3000MHz@1.45v | Sapphire Nitro+ SE RX 590 8GB@1525Mhz core@1.0v/2250MHz@1500MHz timings BiosModded


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#3
April 25, 2019 at 05:01:12
As stated in my question, with AC Adapter plugged in and batteries removed, it will not turn on. When I press the laptop power button it will show green light and then goes off.

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Related Solutions

#4
April 25, 2019 at 05:22:07
whoops, did you try a soft reset tho?(removing all power sources and holding down the power button for 20seconds, then plugging the ac adapter back in and trying to boot)

also could you provide the exact make/model of the laptop, we know it's acer, but not what's inside.

i5-6600K[delid]@4.9GHz/4.4GHz cache@1.504v | 2x4GB Crucial-DDR4-2400CL17@CL12-15-15-28 1T 3000MHz@1.45v | Sapphire Nitro+ SE RX 590 8GB@1525Mhz core@1.0v/2250MHz@1500MHz timings BiosModded


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#5
April 25, 2019 at 05:30:47
Yes, tried soft reset up to 3 mins.Acer Extensa 5620Z. AC Charger Model PA 1650-02
Input 100/230V 1.6A 50-60Hz
Output 19V 3.42A 65W

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#6
April 25, 2019 at 05:57:12
As earlier... I have found (in my) case with adapters - be they OEM or third-party others - used on Acer laptops often fail in such a way to allow the leds to glow correctly but the charging voltage isn't correct. Thus the battery may not (usually doesn't) charge properly; and whether or not the battery in installed the laptop will not power up.

The volts from the charger will be higher off load than when on load; but when on load (plugged into the laptop - they will drop to way below what is required.

Your simplest test s to borrow a suitable adapter and see it it will power up the laptop.

Your problem comes when finding a charger with the correct size plug in tip (the end that goes into the laptop ); as they vary across makes/models of many laptops and assorted charger/adapters.

Two options there come to mind... Chat up a local store and see if they will allow you test your laptop with a compatible adapter (or will they allow a buy/return if not required etc.); or buy from Amazon as you can return it if not required...

Search for the adapter specific to your Acer; and read the reviews for those you find. Do NOT buy the cheapest as invariably they are poorly designed and frequently run more than just warm. All adapters run warm to some degree but ought not to be "hot".

I have had two Acer compatible (actually Acer branded) adapters over the years - to power my 2005 Aspire (came with XP). It's still running Ok on the second one which was bought a few years after the first replacement died as above; and that first one was replacing the original that came with the laptop when new (and had similar symptoms to yours). Both came from Amazon sources.

When you buy an adapter... it must be able to provide the minimum as current (and obviously volts too) as shown on your current adapter. It can be spec'd to give higher current - but not lower.

Liteon used to be the default brand with many an Acer; often Acer shipped them out with Liteon still as the name, rather than Acer...

I did quick look-see on Amazon.com using:

Acer Extensa 5620Z. AC Charger Model PA 1650-02

and found a host of them. The same adapter is used across quite a range of Acer kit... As earlier - read the reviews for whichever source you use to check if others found the adapter from there OK - or not...

Incidentally - how olde is this laptop; is it still under warranty or not?

message edited by trvlr


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#7
April 25, 2019 at 06:07:58
DDR2, so 5+ years

also full specs:
https://www.cnet.com/products/acer-...

i5-6600K[delid]@4.9GHz/4.4GHz cache@1.504v | 2x4GB Crucial-DDR4-2400CL17@CL12-15-15-28 1T 3000MHz@1.45v | Sapphire Nitro+ SE RX 590 8GB@1525Mhz core@1.0v/2250MHz@1500MHz timings BiosModded


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#8
April 25, 2019 at 07:38:31
My original Acer power adapter "died" - as above - after about 5-6yrs. The first replacement adapter lasted about the same; the second is still OK - but then isn't often used as much.

As previous I'd be testing with another known good compatible etc. adapter; without the battery installed, and then with - presuming the laptop does power up on mains only (no battery installed).


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#9
April 25, 2019 at 08:18:19
Bought in March 2008, no longer under warranty
Checked with Acer, item obselete.

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#10
April 25, 2019 at 08:43:19
how about (just a thought), buying a new on sale laptop with a 250GB SSD for about 200~250$, about 10x faster and with support/warranty.

it's like an cheap old car, in the end the old car cost more, sice you have to keep fixing it's problems

srry i like to ramble a bit :D

i5-6600K[delid]@4.9GHz/4.4GHz cache@1.504v | 2x4GB Crucial-DDR4-2400CL17@CL12-15-15-28 1T 3000MHz@1.45v | Sapphire Nitro+ SE RX 590 8GB@1525Mhz core@1.0v/2250MHz@1500MHz timings BiosModded


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#11
April 25, 2019 at 10:54:33
Bought in March 2008, no longer under warranty
Checked with Acer, item obselete.

Adapters compatible with the laptop are still available. Many laptops today use the same adapter - volts/current (thus watts too); common across many a make. Just be sure you specify and find one that includes your model Acer.

Do a google - or at least an Amazon or eBay - trawl using your laptop details and/or the adapter details as the search term/string...

I'd go the replacement (at least a test) adapter first. If it works your up and running. If it doesn't then likely the problem is the power in/charing connector/cct. on the main board. A rare event all things considered.

hiide663's suggestion is a viable possible if the problem/solution is more than a simple replace the adapter process?

message edited by trvlr


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#12
April 26, 2019 at 09:17:02
Hi Ngkh,
have you tried having the Laptop switched off,
the Battery installed,
the Charger plugged in and connected to the Laptop,
such that the Battery charges.

What happens, if you then switch off and/or disconnect the Charger?

Will the Laptop then start?

As a matter of interest, where (city/state) are you located?, I am in London

Good Luck - Keep us posted.

message edited by Mike Newcomb


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#13
April 26, 2019 at 22:03:14
Will not turn on with or or without AC adapter plugged in and also with or without batteries.
Only solution would seem to be to get known good AC adspter and batteries to see if it turns on. If it dosen't , could be mainboard or other components faulty I think.Many thanks to all who responded. Greetings from Singapore.

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#14
April 26, 2019 at 22:16:15
"could be mainboard or other components faulty I think"
3 Troubleshooting Tips Guaranteed To Boot Your PC’s Motherboard
http://www.makeuseof.com/tag/3-trou...
The Basic troubleshooting guide is intended to provide you with a guide to problems that you may experience with the system
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How to Diagnose Motherboard or Processor Problems
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Testing my computer motherboard and CPU for failures?
http://www.computerhope.com/issues/...
How to Troubleshoot for Motherboard Failures
http://www.wikihow.com/Troubleshoot...
Troubleshooting a Computer Motherboard
https://www.ifixit.com/Wiki/Trouble...

Greetings from.
https://www.timeanddate.com/worldcl...


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#15
April 27, 2019 at 02:42:50
Start with a known good adapter. If the laptop powers up with that, battery not installed, then power down and insert the battery, and leave it to charge up. Once battery charged, test laptop using battery power only.

Likely the battery is ok, just the charger/adapter has failed.

A local store will probably be happy to allow you to test the adapter option at least in the store. If it works, the laptop powers up ok, then you know the one you have is probably faulty. Test the battery as above at home, if the store won’t allow you time to test it in the store.

Dn’t Buy a new battery until you have proved the adapter first.


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