Contents
Why does my SMPS make noise?
They are acting like tiny loudspeakers. Some SMPS have switching frequencies higher than the audible range so you don’t hear them, others have more rigid components so they move less. Changes in current or voltage will change the switching frequency or waveform, that’s why the sound changes.
Should I install PSU fan up or down?
It is recommended to mount the power supply with its ventilation top cover facing DOWNWARD. The fan in the power supply will take in the warm air inside the computer case, and the power supply will exhaust the air through the back.
What happens if there is no output on a SMP?
No output, good fuse SMPS can fail in many different ways, the most common being no output power at all. In this case, I start by checking the input fuse. If the fuse is good but there is no output, probably all the semiconductors are good and it could be easy to fix.
Why do you need a SMPS repair guide?
Acquiring the proper SMPS repair guide book is actually pretty important for those who lack the experience, and know-how to successfully fix defective switching power supplies. Are you one of those inexperienced repairers who are super eager to learn the art of fixing power supplies as quickly as possible?
What makes the jestine SMPS repair guide so good?
The thing I like most about Jestine’s SMPS repairing guidebook is that it comes with one-on-one email support. This feature is massively helpful, especially for someone like me, who at the time, was a very much a newbie to the whole subject of how to troubleshoot switching power supply.
Where are the power supply tracks on a SMPS?
All configurations have some additional circuit to allow the controller to start at power-up. Structure of a SMPS. There is always a very clear separation between the high and low voltage sides (primary and secondary sides). You can observe it on the bottom (copper) side of the PCB as a larger spacing in the tracks.