meanwell spv-300-48

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I recently purchased this for a good price from ebay for powering a tpa3255.
It has a PV input which uses up to 5.5v to regulate the output. I asked the seller if I needed to use this as it would complicate matter for me and the answer was it isn't required.

Well it is! If you don't power the PV input you get nothing out. Well actually a very small fluctuating output and I can hear some PWM going on inside or something in time with the voltage fluctuation.


So not ideal but I got it working and have I running off a USB feed. It draws no current as far as I can tell.


Which got me to thinking if I can actually use this now to my advantage and possibly use a USB from another device in my system rack to switch ths PSU on? Is it harmful to leave the 230ac into it live with the PV not enabled?


And the fan control doeant seem to work, it is on all the time.!


Thanks for any help

James
 
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