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Old 05-09-2018, 04:16 AM   #1
lepak06
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Default ACER GD245HQ totally dead no power

Hello,

I have an ACER GD245HQ.
After unplug the AC cable et replug it the screen is totally dead.
No standby led and no power on when press power button.

I check the power supply board 5V and 22V are ok.

I try to reflash the eeprom MX25L1605A with an dump that i found it on web.
I check the 3 DC converters on main board it seem ok .
But always no power totally dead.

Have you an idea?

Thx
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Old 05-09-2018, 04:48 AM   #2
Mohamed Nabih
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Default Re: ACER GD245HQ totally dead no power

upload some pictures so we can help you
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Old 05-09-2018, 05:19 AM   #3
lepak06
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Default Re: ACER GD245HQ totally dead no power

I join the service manual with schematic
And 2 photos of boards


Attached Images
File Type: jpg IMG_20180509_131227.jpg (150.9 KB, 41 views)
File Type: jpg IMG_20180509_131149.jpg (131.5 KB, 3 views)
Attached Files
File Type: pdf ACER SCHEMATICS.pdf (2.01 MB, 39 views)

Last edited by Per Hansson; 05-10-2018 at 01:44 AM.. Reason: Offsite images uploaded
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Old 05-09-2018, 09:14 AM   #4
lepak06
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Default Re: ACER GD245HQ totally dead no power

I found the first problem it was the IC I204, i rehot it and the screen work.
But the screen is blank (white screen) i checked the voltage on tcon it was 2V (the normaly voltage is 5V) I unplug the panel cable voltage And now the Regulator I202 at the V_out i have 1V ( the normaly voltage is 3,3V) I checked the regulator it is ok.
Whithout this regulator ic i have on the Vout on the board 1V
For the regulator I203 , the V_out is ok with 3,3V
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Old 06-24-2019, 05:11 AM   #5
djserhatcom
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Default Re: ACER GD245HQ totally dead no power

Do you download bios?
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