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Old 01-20-2018, 03:36 AM   #1
lorins_core
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Post Acer Aspire V3-371

Hello there.

I need a Schematic Diagram For this Unit

MODEL: Acer Aspire V3-371-56LD
MOBO : VA30-HB MB13334-1


Problem: No power

1. I Check the Rail Of 19V have Supply
2. I Check the power Switch Ok.
3. I check the 5V ALW have
4. I Check The 3V or 3.3V ALW only 2.something

Any one can help me to Fix this. or if you have a Schematic Diagram. May I Copy Thanks
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Old 01-20-2018, 04:13 AM   #2
dspok
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Default Re: Acer Aspire V3-371

replace collector cap if it is not generating correct 3.3v ALW
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Old 01-20-2018, 07:42 AM   #3
JaroTech
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Default Re: Acer Aspire V3-371

I found this, I hope it will help you.
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Old 01-20-2018, 07:32 PM   #4
lorins_core
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Default Re: Acer Aspire V3-371

Quote:
Originally Posted by dspok View Post
replace collector cap if it is not generating correct 3.3v ALW
Thank Master I try it later and i re post it ok or not.
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Old 01-20-2018, 07:33 PM   #5
lorins_core
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Default Re: Acer Aspire V3-371

Quote:
Originally Posted by JaroTech View Post
I found this, I hope it will help you.

More Thanks Master. I try to view later and i re-post.
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Old 01-23-2018, 09:01 PM   #6
lorins_core
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Default Re: Acer Aspire V3-371

hello to all

update on this unit:

I clean the mobo.

CHECK the Capcitor filter on Part of this PC4501 & PC4502 "no leak & no Shorted"

3.3V ALW mosfet Area PU4503 & PU4502 im compused for this? and why if inject (already plug the Supply Adapter) turn off.
have Supply out of 2V only @ 3.3v ALW- if i turn on the switch to power on. unit turn light indicator only on after off
checking the voltage on 3.3V ALW. have. but this Part no. PU4501 is heating up....


Any Advice
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Old 01-24-2018, 12:55 AM   #7
lorins_core
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Default Re: Acer Aspire V3-371

Follow Up plsss
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Old 01-24-2018, 07:36 PM   #8
lorins_core
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Default Re: Acer Aspire V3-371

Up please...
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Old 01-24-2018, 09:54 PM   #9
vhn1998
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Default Re: Acer Aspire V3-371

check PU4501: pin 3: 3D3V_AUX_S5??? if <3v3. check RTC_RST#, SRTC_RST# . I think error rtc block in haswell(cpu). replace CPU

Last edited by vhn1998; 01-24-2018 at 09:56 PM..
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