Yes. For virtually all Rockford amps that use the TO-220 case transistors, the 3205 with 47 ohm resistors are what I'd recommend. I think this amp has 10 ohm gate resistors. If none are defective, you can leave them. If any need to be replaced, replace all with 47 ohm resistors.
Thanks for responding, Perry
Yes, there were two burned, I've replaced those two, and two, by 3205, also resistors door, which were 10 ohms for a 47 ohm, then connected the amplifier, without connecting the remote has tripped the 20A fuse, I put a fuse of 40A, and has returned to burn the two 3205 on that side, originally, had also jumped.
There must be something more shabby .... Electrolytic capacitors are very swollen, I have taken and tested, and measured less than 1000 microfarads marking each, but that does not think it's reason to burn fet 's ...
What do you think, Perry,,?
Yes, there were two burned, I've replaced those two, and two, by 3205, also resistors door, which were 10 ohms for a 47 ohm, then connected the amplifier, without connecting the remote has tripped the 20A fuse, I put a fuse of 40A, and has returned to burn the two 3205 on that side, originally, had also jumped.
There must be something more shabby .... Electrolytic capacitors are very swollen, I have taken and tested, and measured less than 1000 microfarads marking each, but that does not think it's reason to burn fet 's ...
What do you think, Perry,,?
Connect only remote and ground and look at the gate drive signals on the gate legs of all of the power supply FETs (after removing the blown FETs).
Okay, I have, with the tips of negative test amplifier connected to ground and the positive to the gate of the circuit, the FET in the power supply, and gives me a measure of 6.60 volts and up ... ¿?
I have made the measurement also in the other two fet, the power supply are good, and as he gave me is still 4.53 volts.
The battery of my portable oscilloscope, was discharged, the'm loading, just in case it were necessary ...
I have made the measurement also in the other two fet, the power supply are good, and as he gave me is still 4.53 volts.
The battery of my portable oscilloscope, was discharged, the'm loading, just in case it were necessary ...
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6v of DC without the supply in operation is probably too high and would tend to indicate that the PNP driver transistor is open. Using the scope will be more definitive.
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