QUOTE(Ngto @ Nov 26 2011, 10:31 AM)
Mostly the same computer and power supply. Change MB few times but use back Power Supply which was not damaged. The PSU is expensive brand and provides sufficient voltage.
So what do you think about the different readings from the AVR and the Analyzer? I suspect the AVRs in the market are con job.
I tested another AVR (different brand in another room) which is also displaying the 230V in the LED display. But the Analyzer plugged in shows 244-245V.
1. Frequent motherboard failure issue, it is advisable to check the output capacitor in your power supply. They are located near those wires coming out from the power supply. Lookout for bulging or leaked capacitors.So what do you think about the different readings from the AVR and the Analyzer? I suspect the AVRs in the market are con job.
I tested another AVR (different brand in another room) which is also displaying the 230V in the LED display. But the Analyzer plugged in shows 244-245V.
2. It is odd that both AVR output such a big differences. The cheapest AVR are normally only designed to prevent power fluctuation, so if the power in your house fluctuate between 240~250v the AVR will out approximately 245v (depends on design) constantly. A better AVR will incorporate design to output at a fixed preset rate eg. 230v constant. Some expensive AVR even have the capability of a power conditioner to smoothen or remove noise in the power.
Since i do not know which type of AVR you are using, it is hard for me to to provide an answer on why 2 AVR output such a big difference. It might be of poorly designed or degrading and thus out of spec. You can however check whether the reading on the wattmeter is accurate by cross referencing with a multimeter (True RMS type if possible) or we can test it out for you when you send back the wattmeter to us.
Nov 26 2011, 07:15 PM

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