Tpa3116d2 Amplifier not working properly

S-fr said:

i did attached my testing speaker to see if there was any noise when i turn it onn, but there wasn't any.

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alec_t said:

Which terminals did you attach it to?
I see L+, L-, R+, R- on the underside of the board. I'm guessing it's a bridge-tied output.

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JimB said:

Your amplifier appears to be well used and not new.
Where did you get it?
Was it said to be working?

There should be a heatsink mounted on top of the IC.

Look at this one, which seems to be very similar to yours:

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TPA3116D2 2x50W Class D Stereo Amplifier Board with Volume ControlThe board's design, with the popular TPA3116 chip, delivers Class D efficiency and high-quality clean sound reproduction. Pause the music and notice no hiss or hum. Turn the amp board on/off, with the included volume control, and...

www.parts-express.com

My best guess is that the IC is damaged.

But, have a look here:

View attachment 143179


Is that a solder blob shorting two pins together?

JimB

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S-fr said:

Mann, i didnt even saw that, also i did bought and used it for a while, it been like 8-9 month since then it was in my bucket with all the other apms, ik i it works for sure but now that im using it, its not working, ill look into that pin shorting problem, and mann even i didn't notice that, thanks for noticing and pointing it out for me, ill update what happen next, and yes it also got a heatsink like that but ik for sure that class d ics like that aren't supposed to leave a burn mark on the finger when touched

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