Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

[capwizard]

I try to fix this..........Rockford Fosgate Punch 401S 2 Channel Amplifier - 100 watts RMS x 2 at 4 ohms - 200 watts RMS x 2 at 2 ohms - 1200 watts bridged at 1 ohm 400 watts RMS x 1 bridged output at 4 ohms - stereo or bridged mono output - 1-ohm stable in bridged mode - requires 8-gauge power and ground leads wiring and hardware not included with amplifier - 50-250 Hz high-pass/low-pass (12 dB/octave) crossovers - wired remote included for fingertip control of Punch Bass (0-18 dB boost at 45 Hz) - MOSFET power supply and output devices - MEHSA mounting technology increases the heat transfer from the MOSFET output devices to the heat sink, for higher power output, lower operating temperatures, and greater reliability - TOPAZ noise-killing differential inputs that eliminate 80% of ground loop noise - trans-acana circuitry keeps preamp voltages low and signal paths simple for outstanding audio quality - NOMAD advanced protection circuitry for "intelligent" shutdown protection - selectable Punch Bass (0/6/12 dB boost at 45 Hz) - speaker- and preamp-level inputs
retail price: 399

[capwizard]

Re: Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

Ive fixed Punch Amp, the MOSFET had soldered on aluminum heat sink plate, I needed to use this to take out the MOSFET parts.

I talk to myself if this overpower (32v subed to 24v) poormans solder iron can take out the MOFET parts, will be the best in the world, most of time I need to use UK 100w solder iron to do this jobs.

[capwizard]

Re: Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

1 channel Amplifier(4) MOSFETs burned out, It Caused the power MOSFETs (4) burned out, Total changed 8 MOSFETs.......It's fixed.............

[budm]

Re: Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

When I remove that kind of mounting, I cut the legs first since there is no need to save the old parts, then I add more solder/flux to the tab and then remove device.

[capwizard]

Re: Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

Yes I did too, first I cut two legs, tested no good cut last one, add flux then unsolder the MOSFETs.