Quote:
Originally Posted by Electronic M
I didn't even try to install resistors in the old ballast. I used metal case chassis mount power resistors bolted to chassis (the upright that holds the seleniums)to improve heat dissipation.... It's been in service 4 years now (sometimes it's on all day long) and is doing fine.
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What power rating resistors did you use? Does the chassis upright holding the seleniums get noticeably warm?