acer 5734z no power issue.

[rickybucalan]

hi guys.

i got here acer 5734z mobo no power.

checked 3.3v and 5v alws good.
checked all coil for short good.
check power switch good..

dont know what should be to check next?

tnx.

[rickybucalan]

Re: acer 5734z no power issue.

sorry i did not mention after i press power on 3.3v and 5v goes off.

[bluestone]

Re: acer 5734z no power issue.

check the EC to make sure pin8 is not short to ground

[rickybucalan]

Re: acer 5734z no power issue.

hello guys anyone who have diagram for this model LA-4855P tnx.

[rickybucalan]

Re: acer 5734z no power issue.

check the EC to make sure pin8 is not short to ground

its wasn't short to ground...

[rickybucalan]

Re: acer 5734z no power issue.

hello guy.. now my problem get worst the 5v and 3.3v coil is shorted.

tried to removed dc regulator ic PU4 but still shorted coil.

tried to removed posible shorted mosfets near PU4 but still shorted coil.

tried to removed one coil the short gone but the caps next to it is shorted. and

tried to removed the caps but it still shorted pad...

is there any chance to fix it or to condemn it.

tnx..

[LP_tekh]

Re: acer 5734z no power issue.

I think you killed the ec chip.
Did you remove the battery when you replaced the keyboard?

[dj_ricoh]

Re: acer 5734z no power issue.

hello guy.. now my problem get worst the 5v and 3.3v coil is shorted.

tried to removed dc regulator ic PU4 but still shorted coil.

tried to removed posible shorted mosfets near PU4 but still shorted coil.

tried to removed one coil the short gone but the caps next to it is shorted. and

tried to removed the caps but it still shorted pad...

is there any chance to fix it or to condemn it.

tnx..

inject voltage!!!!!!!!!
1.5v battery or a tablet battery if that 1.5v bat doesn't do the trick.

tablet battery's are rated 3.7v so ... it may do the job

[rickybucalan]

Re: acer 5734z no power issue.

inject voltage!!!!!!!!!
1.5v battery or a tablet battery if that 1.5v bat doesn't do the trick.

tablet battery's are rated 3.7v so ... it may do the job

thanks but i really dont no how to do that... can you tell me what to do with that.