[Bigreddog42]

Greetings! I restored a Philco 48-1270 a while back and added a fuse to the line in just before the terminal block. I used a 1.5 A fast-blo and that held up fine until recently. I switched on the set first thing in morning and it blew in the first second. I can’t find anything wrong with her. Working fine right now. Do you think 1.5 A is a bit too small for the startup? She’s rated at 140W which I believe may be steady state. Anyway would appreciate some voices of experience.

[David]

Try a slow-blo before raising the amps.

[Bigreddog42]

That’s a good idea. I was concerned about going up. Gonna order some right now. Thanks!

[GarySP]

+1 what David said. Current draw on start up is highest as the tubes warm up. Slow blo fuse should be enough. Take care and BE HEALTHY! Gary

[radiorich]

Hello Bigreddog,
Yes, I almost always use a slow blow as the rest said that first inrush of current when those tubes are cold is where the current is the most like when you first turn on a lightbulb !

[Bigreddog42]

Thanks all. I know it’s a small thing but I am bad about sweating the small stuff. I guess that’s why I put the fuse in there to begin with. Happy Easter!

[GarySP]

I wouldn't consider a fuse added as "bad about sweating the small stuff". Always try to err on the side of safety; it usually wont do you wrong. Take care and BE HEALTHY! Gary

[Bigreddog42]

Put the slow blow 1.6 A fuse in this morning and she is singing again!    

[ODPILOT]

The other choice, which I have installed in my 53-1750 is an Inrush Capacitor along with a regular fuse.