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m4ick 25th January 2012 11:52 PM

Crunch Ground Pounder 3000 Pro
Does anyone know the value of the power supply gate resistors for this amp? They're pretty well charred.

Perry Babin 26th January 2012 12:54 AM

If they're using IRFP064s in the supply, they may be 22 ohms. That's what's used in an amp that appears to be closely related.

mike49504 26th January 2012 02:38 AM

They are 47 ohms gate resistors

Perry Babin 26th January 2012 06:49 AM

Generally, even if they all appear to be burned, quite a few will be within tolerance and can tell you what they were. Of course, you must measure the value after removing the FETs or the resistors from the circuit.

m4ick 4th February 2012 10:56 PM

They test 47ohms, what's CRAZY is that the way they are discolored, the look EXACTLY to be brown, black, black, gold (10ohms). Yet they check 47ohms, yellow, violet, black. gold.

Thanks to you both, you were both right.

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