Hi Guys
I have an smps from my plasma TV that is tripping its voltage protection. ie it is killing the chopper signal to the main transformer upon startup. A scope on the output of the transistor shows a nice square wave for a split second at turn on, then the signal disappears.
If I unplug all of the connectors that come off the supply, the supply will not power on as expected.
Any thoughts on how best to build a dummy load perhaps with an LED on each of the output voltage rails to make sure that the problem is on the supply and not external to the supply. I am currently thinking of some big fat resistors at the moment.
Mike C
I have an smps from my plasma TV that is tripping its voltage protection. ie it is killing the chopper signal to the main transformer upon startup. A scope on the output of the transistor shows a nice square wave for a split second at turn on, then the signal disappears.
If I unplug all of the connectors that come off the supply, the supply will not power on as expected.
Any thoughts on how best to build a dummy load perhaps with an LED on each of the output voltage rails to make sure that the problem is on the supply and not external to the supply. I am currently thinking of some big fat resistors at the moment.
Mike C