[Chris h]

Thanks Nathan and Morzh for posting the choke specs. I thought I had a choke from another chassis, but it had been replaced by another which wasn't even close to being the right choke. I have subbed in a 400 ohm power resistor on a temporary basis. I am only seeing 40 mils across the resistor, so think the old choke just gave up the ghost. I checked for a shorted tube, finding none. The old choke is wide open. Doesn't smell or look like it had over heated, and the spare chassis had a replacement. I am thinking it might be a common problem?

I'll start looking for the correct choke, or at least something close. It is in a pretty tight spot.