Quote:
Originally Posted by compucat
My Motorola 9VT1 ran for years on the original metal ballast. One day I was watching it and it just turned off as though someone pulled the plug. The ballast tube just burned out. I replaced it with a glass one and no problems since. They do last but run hot and can go bad. I like electrostatic sets. They work well and are an interesting part of early TV history.
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So far mine have been holding up. I notice it's very tough to find these metal ballast tubes on eBay. A while back I saw a good tested one and just bought it as a spare.