Knocks, bangs, bumps, whining, scratching, chatter, buzzing, and noises of all sorts can be difficult to diagnose properly, especially in machines with multiple moving parts.
This elliptical came from the manufacturer with the resistance motor installed a bit too closely to the pulley. A quick adjustment and the sounds were silenced.
Our experience lead us to a speedy diagnosis, and a painless repair – zero downtime for the customer, no parts ordered in error. Knowing where to put the “x” is the defining difference between the every-day and the seasoned technician.