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acer aspire 5738 no power leds working

Acer Aspire 5738 no power, no leds working
#1
Hi, I am repairing an Acer Aspire 5738ZG, with motherboard JV50, and I need help. I want to know where are the voltages the computer is receiving. I have 19V on some places. The problem is I can't identify the order of the pinout on the schematic and on the board, (what is the first pin, should I count clockwise? ). It is a square IC, I am seeing system dc/dc.
I don't have the battery, so I only can check when the charger is plugged.
There is a component where I don't have 3d3v_aux_s5, but have 3v from the cmos battery.
Thanks
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#2
(09-06-2020, 11:38 AM)Fran7Ribeiro Wrote: Hi, I am repairing an Acer Aspire 5738ZG, with motherboard JV50, and I need help. I want to know where are the voltages the computer is receiving. I have 19V on some places. The problem is I can't identify the order of the pinout on the schematic and on the board, (what is the first pin, should I count clockwise? ). It is a square IC, I am seeing system dc/dc.
I don't have the battery, so I only can check when the charger is plugged.
There is a component where I don't have 3d3v_aux_s5, but have 3v from the cmos battery.
Thanks

Hi,

I've not really worked with that particular laptop, but I was able to find some block diagrams and service manual for that model laptop.

The block diagrams have a lot of information, so you might have to carefully look through it to find what you need.

I've put them into a 7z archive and uploaded it to this link on Mega.
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