Question about Acer X203H bd Monitor

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I have this monitor and it became now blank means just white screen i have opened it and first i test the lcd panel on another one its like good then i replaced video mixer ic which named realtek and nothing changed then i suspended on the power board i check its voltage i found them : 4.5 volt and 2.2 volt i am sure that those voltage is not the default voltage so i want 2 know the default voltage i think it may be 12 volt because the filter capacitor on it 35 volt is my think is truth or not??? if any body have the power shematic or diagrame i will be fine thanks 2 all

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Those voltages does not sound right, it should have 5v for the logic board and 16~20v for the inverter board for this 20" screen size, but you are getting the white screen which means that the backlight is working, so your measurement may be wrong. The white screen means that the T-CON board is not feeding either the 5v or 12v (depend on the screen makes and model) that will be the first palce to check, the logic board supply this voltage through a switched transistor to turn the T-CON board on or off (off during standby mode).

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

I could not locate any free sch for this model yet.

Posted on Sep 28, 2010

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Posted on Jan 02, 2017

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