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Kicker CXA1800.1 power supply
Kicker CXA1800.1 power supply
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Old 10th February 2019, 11:36 PM   #1
Crazylogix is offline Crazylogix  United States
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Default Kicker CXA1800.1 power supply

Got a Kicker CXA1800.1 that is going into protect. I checked all the power supply and output fets while in the board, none are shorted. I removed the rectifiers and tried to power up just the power supply, still protects. I tried powering up with just the ground and remote wire and the protect led flashes. This amp has a microcontroller on it, so not sure what else to remove to get down to just drive wave. Any help would be great. Thanks
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Old 11th February 2019, 01:00 AM   #2
PapaZBill is offline PapaZBill  United States
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Try lifting D33 and D34 one at a time.(Output Protection)

If that doesn't bring the amp out of protection try lifting both D16, D24(CSD1) and then both D17,D25 (CSD2).
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Old 12th February 2019, 12:28 AM   #3
Crazylogix is offline Crazylogix  United States
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Thanks for the info, I found the diodes (see pic) and will get back to work on this tomorrow. Stayed up to late last night, to the point I was calling the base of a transistor the gate (Perry was making fun of me, haha ) and I had an extra long day today, so tomorrow after work I will get after it. Thanks for taking the time to help.
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DMM - HP 1222A scope - Hakko FX888D - 50w Unger iron - Yihua 858D Hot Air - 65A power supply (modded dell server) - 1000w 4 ohm test load - test sub - My Youtube repair videos -> Crazylogix
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