Pilot tv

[maxhifi]

Originally Posted by timmy

Well the set works fine I was just thinking of this really because I don't know how the cabinet does not ignite because it gets extremely hot where those 2 tubes are. There are plenty of those tubes out there but if it were to much then I just as well leave it alone. When I got this pilot someone already literally redone the whole set and I mean every resistor, cap , even Micas were changed and all I did when I got it was put my own caps in and I could not get a full screen because of the low b+ now maybe the tubes I tried were not the best but I have read those posts on these sets and they also could not find out why they had low b+ IIRC 30 volts lower then the specified . So you are saying a 233 ohm 10 watt for the 35w4 and an 83 ohm 15 watt for the 25z6 . But then the diode would be in the neg position along side the resistor.

Yep, 30V low is too low. Check how much current the power supply is supposed to be supplying. The fact that all those parts were changed makes me even more suspicious that something is wrong.

As for it getting hot.. well, that's kind of another sign that something is wrong, unless it's just designed to run hot. A rectifier which is supplying more current than its supposed to will have more loss, and generate more heat than usual.

Do you have a photo of the TV? It's sure neat that a TV used common AA5 tubes, I'd love to see the set.