Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

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  • capwizard
    Badcaps Legend
    • Jun 2016
    • 1991
    • USA
    #1

    Rockford Fosgate Punch 401S 2 Channel Amplifier repair.

    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
    Attached Files
    Tags: None
    • capwizard
      Badcaps Legend
      • Jun 2016
      • 1991
      • USA
      #2
      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.
      Attached Files
      Last edited by capwizard; 02-04-2017, 03:30 PM.

        Comment

        • capwizard
          Badcaps Legend
          • Jun 2016
          • 1991
          • USA
          #3
          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.............
          Attached Files

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              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.
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • capwizard
                  Badcaps Legend
                  • Jun 2016
                  • 1991
                  • USA
                  #5
                  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.

                    Comment

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