Hello everyone,
I am trying to find out the issue with my gaming graphics card which is not showing any display. I checked the voltage of both GPU and
memory with the help of a multimeter(the card has built in point for checking voltages). They are running at optimum level. So I thought of checking the MOSFETs first.
I could find 4 big MOSFETs and about 12 smaller ones.
The bigger ones are P0603BD(x2) and P0903BD(x2) (both are n-channel).
(These seem to be the datasheets for them P09 P06)
Anyway, I checked the resistance between the source and drain(by multimeter) for all the four of them by connecting black to the Drain
and red to the Source.
When multimeter was set to 2000 Ohm,
The P09s gave reading of 535 and 511 Ohm
The P06s gave 130 and 002 Ohm
When multimeter was set to 20k Ohm,
The P09s gradually increased till 6.28k and 11.2k Ohm respectively
The P06s gave 0.11k and 0.00k Ohm
What do these results indicate? Is any of them dead? Do I need to run any more tests?
Please let me know if any more details are needed as I am a total n00b in electronics. It's been a long time since I last studied them.
Thanks in advance.
I am trying to find out the issue with my gaming graphics card which is not showing any display. I checked the voltage of both GPU and
memory with the help of a multimeter(the card has built in point for checking voltages). They are running at optimum level. So I thought of checking the MOSFETs first.
I could find 4 big MOSFETs and about 12 smaller ones.
The bigger ones are P0603BD(x2) and P0903BD(x2) (both are n-channel).
(These seem to be the datasheets for them P09 P06)
Anyway, I checked the resistance between the source and drain(by multimeter) for all the four of them by connecting black to the Drain
and red to the Source.
When multimeter was set to 2000 Ohm,
The P09s gave reading of 535 and 511 Ohm
The P06s gave 130 and 002 Ohm
When multimeter was set to 20k Ohm,
The P09s gradually increased till 6.28k and 11.2k Ohm respectively
The P06s gave 0.11k and 0.00k Ohm
What do these results indicate? Is any of them dead? Do I need to run any more tests?
Please let me know if any more details are needed as I am a total n00b in electronics. It's been a long time since I last studied them.
Thanks in advance.