Re: Toshiba A665 blown MOSFET
OK, I removed the Q30 chip. Tested the source Pin1 to ground and got 8.39 KOhms.
Tested Q45 (took a while to find that little guy), and as I understand it: The top single pin is Drain, the bottom two pins are Gate and Source (in that order)
---D---
G-----S (Q45)
I tested D to motherboard ground and got a different number every time, but somewhere around 4mOhms. Then I tested D to S, same thing - varies around 4mOhms (also tested in reverse order). Don't appear to be shorted. Although I should mention that the first time I placed my probes on each of these Q45 measurements I got a reading around 100KOhms, but the second time and from there on it was around 4mOhms. I assume that's normal...
OK, I removed the Q30 chip. Tested the source Pin1 to ground and got 8.39 KOhms.
Tested Q45 (took a while to find that little guy), and as I understand it: The top single pin is Drain, the bottom two pins are Gate and Source (in that order)
---D---
G-----S (Q45)
I tested D to motherboard ground and got a different number every time, but somewhere around 4mOhms. Then I tested D to S, same thing - varies around 4mOhms (also tested in reverse order). Don't appear to be shorted. Although I should mention that the first time I placed my probes on each of these Q45 measurements I got a reading around 100KOhms, but the second time and from there on it was around 4mOhms. I assume that's normal...
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