Crunch PZI3000.1D Gate Resistors

Thumper88 · 8th April 2009, 10:18 PM

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...

Perry Babin · 8th April 2009, 10:39 PM

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...4154559889.pdf

http://www.fairchildsemi.com/ds/RF/RFP70N06.pdf

8th April 2009, 10:18 PM	#1
Thumper88 diyAudio Member Join Date: May 2006	Crunch PZI3000.1D Gate Resistors 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...

8th April 2009, 10:39 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	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...4154559889.pdf http://www.fairchildsemi.com/ds/RF/RFP70N06.pdf __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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