LED power supply blowing LED controller

DPG · Jan 17, 2020

Are you sure you hadn't had your multimeter connected to it in ammeter mode on the previous occasion?

Bonesey2000 · Jan 17, 2020

DPG said:
Are you sure you hadn't had your multimeter connected to it in ammeter mode on the previous occasion?

Sorry not sure what you are asking? Connected to what?

DPG · Jan 17, 2020

Just wondered if you had tried measuring the output current after the controller and damaged it.

Bonesey2000 · Jan 17, 2020

DPG said:
Just wondered if you had tried measuring the output current after the controller and damaged it.

Oh I see, no always before the controller and also didn't measure anything before the first one blew

static zap · Jan 17, 2020

With the PSU on but no LED light controller attached ,
get the multimeter set to volts DC and measure if the power supply goes over 18V between terminals 5 & 6.
This is a no load test , and may be how delicate electronics,that may only need 3A come to an end on a 15A supply .
( some 3A or 5A fuses may reduce the chance of mishaps with thin wiring on DC 12V-18V )