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Old 19th April 2013, 01:10 AM   #1
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Default Rockford Fosgate Punch 150hd Amp

The pre-amp section of these amps should the caps be replaced on these sister boards before using in my system regardless of whether they're presently in good condition ?

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Old 19th April 2013, 01:16 AM   #2
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Yes because they eventually all will leak. Once they leak they destroy the HBPIM board and or make it very difficult to repair. The traces get eaten up by the electrolytic fluid that leaks from the caps.

CHANGE THEM!!!!
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Old 19th April 2013, 05:49 AM   #3
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Thanks champ, I'll get the caps changed ready for my install...
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Old 19th April 2013, 05:50 AM   #4
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Be careful, the solder pads on those boards are VERY sensitive to heat.
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Old 19th April 2013, 06:51 AM   #5
rickcl is offline rickcl  United States
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Is it better to remove the board to make these changes?
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Old 19th April 2013, 06:54 AM   #6
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I would stand the amp on end and do it. You can remove the board and it might be easier but the vias and solder pads are VERY heat sensitive and you risk damaging them. Chip quik will aid in removing the board.

The capacitors are not very difficult to change with the board installed.
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Old 19th April 2013, 04:54 PM   #7
rickcl is offline rickcl  United States
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Thanks seankane. Do you use through hole components or keep with the SMD?
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Old 19th April 2013, 05:32 PM   #8
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I usually retain the SMD component, but sometimes if the solder pad is damaged I will use a through hole and solder to the trace.

The key is to change them before they leak........lol.
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Old 19th April 2013, 08:37 PM   #9
rickcl is offline rickcl  United States
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Thanks again. I just got this amp in. Went to the forum and it was the first post! I looked and it was the correct problem too. This is a great forum.
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Old 19th April 2013, 10:42 PM   #10
rickcl is offline rickcl  United States
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Seankane I don't mean to takeover this thread but what would you do with this board? Possibly a 200 ohm axial resistor from pin 15 to pin 8 of the TLO72 and 10uf from pin 8 to ground?
Thanks
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