Question about E-Machines eView 17f 17" CRT Monitor

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No Power It worked perfect then I unpluged it and moved it then I tried turning it on but no power then about 15 minutes later it turned on by itself, then I pushed the power button to turn it off and when I tried to turn it on it did it again, now when I tried to turn it on it doesn't turn on at all. It also doesn't seem to be damaged inside or out

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This is pretty characteristic of a failed power supply.
To verify that, one needs a capacitance meter that can measure not only the value of the capacitance but also their losses.

The problem stems from a weakness in the high frequency switching power supplies used in nearly all modern electronics. There are points in the feedback path where a type of chemical cap is used (electrolytic) that does not fare well handling high frequencies and eventually dries out internally or splits its case, losing its capacitance and developing losses that upset the feedback and finally do not pass enough signal to start and maintain the oscillations necessary to operate.

A tech with the mentioned meter could likely find this pretty quick but you need to ask if you want to invest the cost of a repair. The parts cost is minimal, probably under $2 US, but labor is costly and increasingly hard to find.

I have exactly the same monitor and when it comes time, I will repair it (when it still made sense, I repaired monitors - probably over 2,000 of them) since I have the required instruments and parts and also know how to prevent this from recurring - at least in my lifetime.

Posted on Aug 08, 2008

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