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ATX SMPS PSU is having trouble...

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aq_mishu

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atx smps trouble

Hi there...
I am going to use my spare ATX psu for my mobile rig. I'm running a Motorola gm300 which thakes around 7-8A white TX. Thus as a psu, i used the 12V (PSU is rated for 10A@12V). yellow and black cable. now i also connected the pin 14 and 15 with a toggle switch to bypass the motherboard ON/off. when i power it up and press the switch, the fan starts running. means there is ok. then when i turn on the radio, it trips and shuts down. i have to reset it again... but it continues.

instead i took a connection (on test) from my pc and while the pc is running, it is transmitting nice. no trips at all.

why it is tripping when i am using the psu?? ideas???
 

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