Troubleshooting a grounding issue

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I am a layman and was hoping to get some advice. My Lepai TA2020 began to cut out in one channel. I first assumed it was a bad RCA input but the 3.5mm input had the same issue. I was inspecting the connections inside and noticed that when I touch my fingers to the relay block or its pins underneath, the problem improved. What does this suggest? I will mention that I am using the stock 2A power supply that came with the unit and have tried replacing the power supply with no improvement.

Any help is greatly appreciated. Thanks.
 
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