- Jul 25, 2011 The power supply of your PC is controlled by SMPS or power supply unit. When it got damaged your system fails to start, your desktop PC can exhibit any number of strange behaviors. If your PC is suffering from seemingly random reboots or doesn't start at all, the power supply unit (PSU) might be damaged.
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Back to SMPS Repair FAQ Table of Contents. Switchmode Power Supply Troubleshooting SAFETY The primary danger to you is from the input side of the supply which is directly connected to the AC line and will have large electrolytic capacitors with 320 V or greater DC when powered (often, even if the supply does not work correctly) and for some time after being unplugged (especially if the power. In a SMPS, the active device that provides regulation is always operated in cut-off or in saturation mode. Supply is chopped at a higher frequency around 15 to 50 kHz using an active device like the BJT, power MOSFET or SCR and the converter transformer. Here the size of the ferrite core reduces inversely with the frequency. Jul 17, 2017 A switched-mode power supply (SMPS) is an electronic circuit that converts power using switching devices that are turned on and off at high frequencies, and storage components such as inductors or capacitors to supply power when the switching device is in its non-conduction state.
If you are replacing a SMPS first thing you have to do is to unplug all wires and cables attached to CPU. Now start with laying down your CPU on its side with its side panel removed, and the motherboard facing up. Gently place the new unit inside the case so that its screw holes line up with the holes in the case. The connection for the AC power cord should be facing to the outside of the case. Now fix it with screws. Here is a checklist of connections:This article will show you how to install SMPS of your Computer. The power supply of your PC is controlled by SMPS or power supply unit. When it got damaged your system fails to start, your desktop PC can exhibit any number of strange behaviors. If your PC is suffering from seemingly random reboots or doesn't start at all, the power supply unit (PSU) might be damaged.