Yes, tough luck. He could try taking that person to the court, but the case would be hard to win, I guess. However, it appears that the seller didn't disclose the history of the unit, so there might be a chance.
But perhaps having the unit repaired would be a better course of action.
How do you recognize good people to deal with? Go with your intuition, slightest hesitation - don't buy, especially expensive things. Still, intuition will fail from time to time, there will be losses. So what? The important thing is not to lose too much. When buying records off ebay I throw away probably one out of five, that's accceptable loss for me.
But perhaps having the unit repaired would be a better course of action.
How do you recognize good people to deal with? Go with your intuition, slightest hesitation - don't buy, especially expensive things. Still, intuition will fail from time to time, there will be losses. So what? The important thing is not to lose too much. When buying records off ebay I throw away probably one out of five, that's accceptable loss for me.