Got a Crunch PZI3000.1D amplifier with a blown power supply. DFP 70N06 FETs are blown (thankfully a couple still "look" good and was able to read the part number) and all 8 of the gate resistors are totally toast...which appears to be a good thing as the driver circuit still appears to be good (haven't done too much testing yet).
Problem is I can't tell what the gate resistors are supposed to be as they are fully burnt up....not much left to them. Guessing 10 ohms? Not sure though...
Problem is I can't tell what the gate resistors are supposed to be as they are fully burnt up....not much left to them. Guessing 10 ohms? Not sure though...
If the power supply is the same basic design as the PZI1500.1, the resistors are likely 47 ohms. The RFP70N06 should be a good sub for the DFP transistors.
http://uecnue.98.unite.net.cn/Member/WZ/szydx/datadownload/2007714154559889.pdf
http://www.fairchildsemi.com/ds/RF/RFP70N06.pdf
http://uecnue.98.unite.net.cn/Member/WZ/szydx/datadownload/2007714154559889.pdf
http://www.fairchildsemi.com/ds/RF/RFP70N06.pdf
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