Desktop
Here's a picture of my third EnerMax PC power suppy. This one went KaBoom just like the other two. I wont buying any more of these thank you.
by deepsand
by thechas
To my trained eye (over 20 years in electronics manufacturing) they have several design issues combined with a number of process problems.
The critical problem looks like a poor hole to lead ratio coupled with poor solderability. The solder connection to the rectangular lead near the destruction area looks like it went very high in resistance then overheated and finished up with the circuit arcing for a bit.
Many of the other solder connections show signs of poor wetting.
The design of some of the traces coupled with beefing up the current carrying capability by soldering wire on top of the traces is just plain poor design work.
This is a cheaply designed and cheaply constructed board.
I have seen much better work from fresh US design students than this.
Chas
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