I have a Optoma HD65 that started failing, lamp wouldn't turn on and we thought it was a lamp problem, so we bought a new one, but it turned out to be another problem.
There is no official Optoma service (or unofficial for that matter) in my country, so we took it to someone that tested it and said that the problem was probably the ballast. From what I read it seemed plausible so I started disassembling it. Took out the ballast, expecting to find some obvious problem, burnt out components or something, but the ballast looks totally OK.
I'm wondering if someone with experience can tell me if there might be a chance of the ballast not working even if it looks absolutely fine, I don't want to buy one if it's obviously not broken. If I could test it in any obvious way it would be great too, maybe some test points, output voltage, etc.
I'm open to any other suggestions. Thanks,