Question about Cyberhome CH-DVD 300 DVD Player

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Power on problem

I have had this unit for almost 2 years. It would not power up. I checked my 12V and 5V supply. It's there. still wouldn't power on. Have no diagram to further troubleshood. Any idea.

Andy

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  • Anonymous Jun 14, 2008

    My unit has the same basic problem. I have no red or green light indicater light. the fuse is good and the D1,D2,D3,D4 and D5 diodes appear to be good. I bleive the D6 diode has high reverse leakage. But, I do not have a schematic to do any further checkilng. Sam

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Posted on Jun 06, 2008

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How do i turn on a compaq ps-7231 power supply?


Pin Name Color
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ATX motherboard connector pin out


Black=0V(GND)
Yellow=12V
Red=5V
Orange=3.3V
Purple=5Vsb(everytime on)
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White=-5V(optional)
Blue=-12V
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DPS-260lp


It could be your PSU(Power Supply Unit) or your motherboard
to test your PSU use a voltmeter
1-Unplug PSU from motherboard and all unit in the PC
2-Put a small wire between black(GND) and green(PSon) wire
3-Test voltage
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Red and purple is 5V
Gray is PWRGOOD(or PWROK) it must be at 5V
Yellow is 12V
Blue is -12V
White(optional) is -5V

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1 Answer

My computer just died the morning. I removed the


red- +5v
yellow- +12v
orange - +3.3
black- 0v
blue- -12v
white - -5v
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gray- power good(+5v)
purple- stand by (+5v)
disconnect smps from motherboard give the power to smps and short green and black wires and measure the above voltages

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Pin Name Color Description


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Power supply


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