Exploding TDA1514A problem

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mobyd

mobyd

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Joined 2004
#1
I have a small commercially built powered mixer that has developed a nasty habit of eating TDA1514As on one side.
This has me utterly bamboozled - and as these chips are getting a bit pricey I'd like to stop the carnage. The fault occurs when operating at modest output levels and not overly hot.
Any insights appreciated.

cheers
M
 

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#3
EWorkshop1708 said:
Check the power supply going to these chips. If it's too high, or way out of spec, you will have to diagnose why. Something is causing the chips to blow.
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The fault occurs when operating either the unit's own PSU or a regulated =/- 22 volt bench psu, delivering less than 10 watts into an 8 ohm load. No excessive heat, chips don't do anything spectacular like rail latch up - simply stop functioning.
M
 
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