Quote:
Originally Posted by timmy
Does this set have seleniums, if so there could be one going bad as I had low b++ in one of my 7 inch sets because of a bad selenium rectifier. I replaced the 2 with 1n4007 diodes and cured the voltage problem. I had noticed one selenium was much hotter then the other so befor it shorted and and smelled up my house I changed them. Could be power supply caps too but I see your going over the whole chassis so I'm sure you will find the culprit. Does that set have an adjustable ring on the hv rectifier tube, if it has one that will affect the hv output.
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Tim, this one has seleniums and I actually mentioned this to him in a post on another forum. I know he was intending to swap them out with diodes but don't know if he did yet. Personally, when I see seleniums soldered in place I get like the Lost In Space robot: "danger danger, Will Robinson!!"
This won't be difficult to scope out. Only real potential problem would be if a deflection plate in the CRT was bent or damaged and I think that's highly unlikely. Gotta be a vintage or capacitance issue, both easily remedied.
I'm happy he's got HV. This'll come together nicely with relatively short effort.
George