Hi. There could be many reasons this happens. First, it's advised to check all connections, input to the amp, and output to the speakers. Try another source, and check that the cable connecting to the white connector on the amp has a good connection.
about 6 years ago
It seems that with the new forum, my account dissapeard...
So, I did build a T amp with the TK205 and the SMPS300R.
One day, when I was listening music the left channel stopped working.
As I am not very good in electronic, if someone could tell me what to do to verify if the amplifier is dead, this would reallw help me. :rolleyes: