Can you rebuild/repair a vintage Heart inverter charger?

Mine is 13 years old, two years ago it suffered a nervious brake down, doing things it shouldn't. I was told to go to www.tekrispower.com, I did, I talked to the owner, Chris, he knows his stuff, I sent it to him for repair. He repaired it, a electrical board went out,put a new fan in it also, the old one was defective from the factory. Sure cheaper than buying a new one.