The machine was off on arrival but I saw the lights come on briefly once. During assembly I found that there are additional disadvantages such as: B. the inability to loosen or tighten the height adjustment knobs because the knobs don't actually turn the screws that need to be tightened when you turn them. Both were like that. Called the company and they answer the phone and give up to 90 days warranty but requires more upfront work than Revain so come back and get something else.