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can we use2 power supply in one case and if we can why we would think to put2 power supply in one case ?i
when you look inside power supply you can decide if there damaged or burned component .
If there's no any of them you can't decide it is ok or not You must Test all I/P and O/P power then result of this test determine if power supply is good or Faulty.
1. Check the input prot/cable that supplies AC to power supply unit (psu). If the input is functional then-
2. Shorten the output green wire with adjacent black wire and measure all the colored cable voltage with a voltmeter.
If voltmeter shows 12 volt on yellow, 5 volt on red and 3.3 volt on brown wires then the power suppy unit is good. Otherwise it is faulty
The most sensitive parts is adpators (coiles)
If they are hot or their clors changed to black that mean that they are defective
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