Typical Symptoms associated with power-supply failures include the following:
* No indicator lights visible, with no disk drive action, and no display onscreen. Nothing works; the system is dead.
* The On/Off indicator lights are visible, but there is no disk drive action and no display on the monitor screen. The system fan may or may not run.
* The system produces a continuous beep tone.
The power-supply unit is one of the few components in the system that is connected to virtually every other component in the system. Therefore, it can affect all the other components if it fails.
While tracking down power-supply problems it must be kept in mind that in addition to the obvious power connections. The power supply also delivers power to other components through the system board. These include:
1. All the options adapter cards(through the expansion-slot connectors)
2. The keyboard (through the keyboard connector)
Power-supply problems can cause symptoms to occur in all of these areas, and problems in any of these areas can affect the operation of the power supply.
CHECKING A DEAD SYSTEM
OTHER POWER-SUPPLY PROBLEMS
* No indicator lights visible, with no disk drive action, and no display onscreen. Nothing works; the system is dead.
* The On/Off indicator lights are visible, but there is no disk drive action and no display on the monitor screen. The system fan may or may not run.
* The system produces a continuous beep tone.
The power-supply unit is one of the few components in the system that is connected to virtually every other component in the system. Therefore, it can affect all the other components if it fails.
While tracking down power-supply problems it must be kept in mind that in addition to the obvious power connections. The power supply also delivers power to other components through the system board. These include:
1. All the options adapter cards(through the expansion-slot connectors)
2. The keyboard (through the keyboard connector)
Power-supply problems can cause symptoms to occur in all of these areas, and problems in any of these areas can affect the operation of the power supply.
CHECKING A DEAD SYSTEM
OTHER POWER-SUPPLY PROBLEMS
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