2PAC Mafia
Member
Hi guys,
I have a doubt... I´m trying to repair an industrial marine computer which has a problem, screen is not switching on and I guess there is a problem at processor board, it´s a Kontron processor board. When a measure at drain-source of 42N03S mosfets near to the main processor I get short circuit. I only could remove one and out of the board is good.
Processors are in BGA format so not a lot of things to measure, but I remember I already had a similar problem where when I measured at some electrolitic capacitor I got short, when I removed the processor from a socket the short dissapeared so I thought the processor was in short. I replaced it and the problem was still present. Finally the problem was another thing not in that board!!!
My question is how or why this power source measured at SMD capacitors or even measuring mosfets is giving shortcircuit and when the processor is removed the shortcircuit is not there anymore.
I have a doubt... I´m trying to repair an industrial marine computer which has a problem, screen is not switching on and I guess there is a problem at processor board, it´s a Kontron processor board. When a measure at drain-source of 42N03S mosfets near to the main processor I get short circuit. I only could remove one and out of the board is good.
Processors are in BGA format so not a lot of things to measure, but I remember I already had a similar problem where when I measured at some electrolitic capacitor I got short, when I removed the processor from a socket the short dissapeared so I thought the processor was in short. I replaced it and the problem was still present. Finally the problem was another thing not in that board!!!
My question is how or why this power source measured at SMD capacitors or even measuring mosfets is giving shortcircuit and when the processor is removed the shortcircuit is not there anymore.