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Class D Switching Power Amplifiers and Power D/A conversion

TA2020 noob questions :(
TA2020 noob questions :(
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Old 14th July 2010, 08:54 AM   #1
merajsalek is offline merajsalek  Australia
diyAudio Member
Join Date: Sep 2008
Default TA2020 noob questions :(

Hi all!!

I bought a TA2020 board (assembled) from eBay. It worked like a charm out of the box, however, once I placed it in an aluminum enclosure, there was an annoying hum. I thought it was because I didn't isolate the pot.

Once I opened it up to isolate this pot, I had an uncontrollable urge to connect the power supply (SMPS) while everything was in a birds nest. Sadly, this is when the zobel register decided to start giving off smoke My theory is that something got shorted somewhere....

I haven't replaced the registers yet, and this is the 1st time I have seen a Zobel register go out Could there be any reason why both the registers might get fried at the same time?

Btw, no load was connected at the moment, tho a source was connected....

I'll post pics if anyone thinks it to be necessary..

Pls advice and have a great day...
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