[madlabs]

As an ex-firefighter, for me it is about the risk VS gain equation. Unfortunately I don't know enough in this situation to really asses the risks or mitigate the hazards. So I should be more cautious.

I'm putting together a parts list and I have a couple of questions. Looks like 1 watt metal oxides should fit for the 1/2 watt resistors. How often do these go bad? On a Hallicrafters SX-44 panadapter I did recently, 90% were bad. On an SX-43 they were pretty much all good. What are these Predictas like in that regard? I can order the exact values called for on the video PCB or buy a variety pack of values and see how it goes. Thoughts on that?

I'm not planning on messing with the tuner for starters, just the video board and all the paper and electrolytic caps under the chassis. I can't seem to find a PDF of the Philco manual anywhere. I saw that Phil had a PCB diagram with top and bottom views but mine is different. I'd love to have one of those.

I will keep this project in this thread to make it less confusing.

Thanks!

Jonathan

Edit: Bruce, thanks for the info. That's what I figured, with such a low filament voltage.