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{784} 1000 Watt Audio Power Amplifier Repair - Step by Step - Part 1



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1000 Watt Audio Power Amplifier Repair - Step by Step - Part 1. in this video i demonstrated how to repair car 4 channel audio power amplifier. it takes 12 volt from car battery, remote on command from the car stereo player, and it provides amplified power signal to drive the car speakers, woofers, subwoofers. in this part-1 of the video series i explained high power amplifier section which consisting of Power NPN 2SD998 and PNP 2SB778 transistors connected in Push Pull configuration. these power transistors are driven by the base driving signal amplifier transistors.

in last video number 759 Car Audio Power Amplifier Not Powering On https://youtu.be/cD1c4wKCcVY
i demonstrated how to repair TL494 based power supply for this almani AL1000-4 Car Audio Power Amplifier Not Powering On, Car subwoofer Amplifier Not Powering On, it is TL494 / KA7500 based push pull topology based car audio subwoofer amplifier. it is 1000 watt 4 channel AL1000-4 almani brand amplifier. it was not working. when 12 volt are applied to main dc terminal and remote signal was applied to REM pin, it was not touring on. no LED was turning on, while troubleshooting i checked 2SC945 transistor was open circuit. i replaced it with 2SC1815 (as 2SC945 was not available and 2SC1815 works in place of 2SC945)

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00:00 how to repair power supply for 1000 watt car audio amplifier
01:55 how to repair electronics circuits step by step
02:51 4 channel 1000 watt audio amplifier circuit configuration, audio preamplifier
03:34 how to understand audio power amplifier circuit. how to trace a circuit
05:32 speakers output connections in 1000 watt car audio power amplifier circuit
08:32 Push Pull Audio Power Amplifier circuit configuration
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Audio
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