Acer aspire 3620 power adapter blinking

[farid multintech]

i have 2 unit of with same kind of problem.any idea where might be shorted?

[lord]

Re: Acer aspire 3620 power adapter blinking

What is the resistance between + and gnd on dc jack?

[farid multintech]

Re: Acer aspire 3620 power adapter blinking

What is the resistance between + and gnd on dc jack?

sorry,forgot to mentioned,the adapter blinking when the adapter plugged in into the laptop so the mainboard problem not the adapter

[lord]

Re: Acer aspire 3620 power adapter blinking

I thought so.
You have to measure the resistane with battery removed and adapter disconnected.

[tom66]

Re: Acer aspire 3620 power adapter blinking

Not necessarily. A bad startup cap could cause similar issues...

[ben7]

Re: Acer aspire 3620 power adapter blinking

Not necessarily. A bad startup cap could cause similar issues...

I agree, usually the LED is powered by the output of the adapter, so it is lit when it is supplying power. A bad AUX PWR cap (for the smps control IC) could be causing too much ripple when the smps goes under a heavy load.

[lord]

Re: Acer aspire 3620 power adapter blinking

Also that issue appears when there is shortage in the dc cable or connector.

[xaviero1412]

Re: Acer aspire 3620 power adapter blinking

shorted bipolar caps...

[farid multintech]

Re: Acer aspire 3620 power adapter blinking

shorted bipolar caps...

can u tell me the location of this faulty caps,thanks

[fddizon]

Re: Acer aspire 3620 power adapter blinking

can u tell me the location of this faulty caps,thanks

Farid,

the parts in these circuits.
let me know if which part is shorted


regards

[farid multintech]

Re: Acer aspire 3620 power adapter blinking

Farid,

the parts in these circuits.
let me know if which part is shorted


regards

i will check soon,thanks

[farid multintech]

Re: Acer aspire 3620 power adapter blinking

there is a mistake about the model,it is acer aspire 5540 motherboard not acer aspire 3620,the boards look alike that why im confused,5540 support dual core processor but 3620 did not,already find the shorted component c513 somewhere near the the processor

[jherson]

Re: Acer aspire 3620 power adapter blinking

tienen el bios'?

[Pascal Komlassan]

Re: Acer aspire 3620 power adapter blinking

The bios