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Clicking sound from system board

Last response: in Laptops & Notebooks
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January 20, 2013 1:56:48 PM

I have an Acer 4720-4721 that has been lying around for a while. I recently decided to repair it as it was given to me broken and i never really had any immediate plans to fix it.

The initial symptoms were that the machine simply would not power on. No lights nothing. Upon further investigation I noticed a repeated "clicking" noise from within the machine when the power was added. I took the machine down to just the power board and motherboard. Added power and the click remains. So I replaced the motherboard and power board as both were cheap finds. I received the parts this past week and went about the process of replacing the items.

After a quick rebuild of the system I noticed the clicking noise again upon adding power. I have tested with a universal power adapter and a brand new replacement power adapter. Both using the intended voltages.

My question is if anyone has had experience with this "clicking" noise and what specifically it points to. I assume the replacement motherboard I am using is DOA. But I guess curiosity has the best of me and i would like to get some other ideas.

Thanks in advance for any further insight regarding this matter.

a b V Motherboard
a c 249 D Laptop
January 20, 2013 2:38:55 PM

Hi :) 

Remove the hard drive and see it it still clicks...

All the best Brett :) 
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January 20, 2013 2:45:52 PM

Thanks for responding Brett. If you read my post you would see that I took powered a motherboard with nothing but the power board and motherboard. There were no components connected to the motherboard.
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a b V Motherboard
a c 249 D Laptop
January 20, 2013 2:47:41 PM

str8cuse said:
Thanks for responding Brett. If you read my post you would see that I took powered a motherboard with nothing but the power board and motherboard. There were no components connected to the motherboard.



Hi :) 

Disconnect the Inverter then ...if it still clicks, its the motherboard...

All the best Brett :) 
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January 20, 2013 2:52:04 PM

I had already guessed it was the motherboard sir. I guess I was looking for a more specific answer as to what exactly was clicking. as i could not put my finger on it (or my ear). Not a big concern just something I had not come across before.
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a b V Motherboard
a c 249 D Laptop
January 20, 2013 4:16:40 PM

str8cuse said:
I had already guessed it was the motherboard sir. I guess I was looking for a more specific answer as to what exactly was clicking. as i could not put my finger on it (or my ear). Not a big concern just something I had not come across before.



Hi :) 

Its probably a short across a track that's clicking... new motherboard time, if the machine is worth it...

All the best Brett :) 
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a b V Motherboard
a c 249 D Laptop
February 23, 2013 5:05:19 PM

Hi :) 

CLOSING due to age... but please start another thread if you are still having problems , which I will answer promptly...

All the best Brett :) 
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