>> There might also be an issue with power switch. You can try disconnecting
>> power switch and touch the power switch pins simultaneously with conductive
>> metal like screwdriver. Just careful when doing this.
>>
>> -Vikki
>
> Never a good idea, there are cheap tools of measuring current, a short
> can blow a good power source/transformer. How do you check industrial 3
> phase 440V, just ground it with a train rail see if there are any sparks.
>