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Class D Switching Power Amplifiers and Power D/A conversion

Help with tda amplifier
Help with tda amplifier
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Old 17th July 2019, 09:36 PM   #1
Huntingferhelp is offline Huntingferhelp
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Join Date: Jul 2019
Default Help with tda amplifier

Im new to this forum, and electronics. I wanted to fix something. I foud my amplifier that was sitting in garage. It was working great until it started to act unpredictably. The volume starts to jump and bass starts to be very poor or way to strong. The sound is very poor and crunchy. So idecided to fix it. But after week i just give up. Any ideas what can it be? Its using tda chips
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Old 17th July 2019, 10:08 PM   #2
nigelwright7557 is offline nigelwright7557  United Kingdom
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Join Date: Apr 2008
Location: Carlisle, England
You need to do some digging into it and follow the signal through and see where it goes wrong.
Also a good visual inspection doesn't go amiss.
Look for bad joints and cooked components and bulging capacitors.

If its really old then possibly the electrolytics are starting to die.
PCBCAD51 download or CDROM 2019 version out now https://www.murtonpikesystems.co.uk
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