Posts: 28
Threads: 6
Joined: Mar 2021
City: Greenville
State, Province, Country: NC
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.
Posts: 1,258
Threads: 32
Joined: Jan 2014
City: Wellborn Florida
Try a slow-blo before raising the amps.
Posts: 28
Threads: 6
Joined: Mar 2021
City: Greenville
State, Province, Country: NC
That’s a good idea. I was concerned about going up. Gonna order some right now. Thanks!
Posts: 2,139
Threads: 158
Joined: Jan 2013
City: Westland, MI
+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
"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
Posts: 1,842
Threads: 118
Joined: May 2008
City: Omak
State, Province, Country: WA
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 !
Posts: 28
Threads: 6
Joined: Mar 2021
City: Greenville
State, Province, Country: NC
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!
Posts: 2,139
Threads: 158
Joined: Jan 2013
City: Westland, MI
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
"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
Posts: 28
Threads: 6
Joined: Mar 2021
City: Greenville
State, Province, Country: NC
Put the slow blow 1.6 A fuse in this morning and she is singing again!
Posts: 122
Threads: 37
Joined: Jul 2012
City: Coral Springs, FL
The other choice, which I have installed in my 53-1750 is an Inrush Capacitor along with a regular fuse.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
