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Acer AL718 LCD Monitor - Power supply Schematic Needed

 
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Cicci79
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PostPosted: Sun Mar 29, 2009 9:08 am    Post subject: Acer AL718 LCD Monitor - Power supply Schematic Needed Reply with quote

Hi everybody,

I need the schematic of The Power Supply of Acer AL718 LCD Monitor.
Can someone help me in this ?
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Justmanuals



Joined: 21 Aug 2004
Posts: 1948

PostPosted: Sun Mar 29, 2009 2:58 pm    Post subject: Reply with quote

Very few service manuals contain schematics for power supplies.

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jts1957



Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away

PostPosted: Sun Mar 29, 2009 5:23 pm    Post subject: Reply with quote

Just perform generic checks.
First make sure it has no blown/bulged electrolytics.
Are fuse(s) O.K.? Does main filter lytic have Raw B=Plus? Does Raw B=Plus make it to the regulator device? Does the regulator driver I.C. (and supply) have startup voltage and puts out drive signal to regulator? Do secondary supplies have correct voltage outputs (with or without loads connected)?
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Cicci79
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PostPosted: Sun Mar 29, 2009 5:47 pm    Post subject: Reply with quote

Ok actually I think I express myself wrong.
I need the Inverter schematic ( the circuit which turn on the lamps ).
Actually power supply and Inverter are located in the same board.

Problem:
When I turn on the monitor the Transistor on the Inverter board starts to warm and after a while is burned.
The lamps turn on until the trasistor do not burn.

Thanks for helping
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