Hi Anand,
Don't panic about your Genos. They have some external flaws but the internal circuitry and build are very reliable.
Whenever, you hear something wrong, ALWAYS suspect cabling first. Bogdan's advice is spot on. To add to his comment, ensure that the DIN connector is well seated. Sometimes they can come loose. There could be some oxide on the pins as well. The signal feed is DC power and needs to be perfect, otherwise you may hear some issues. If the plugs are well-seated, try gently pushing them in and out of their sockets a dozen times or so.
Let us know how this works for you.
- Lee