Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Rebuilt 46 Philco dead after one hour!
#5

I don't think so, I think something caused that fuse to blow. At 1.75 amps, that fuse is a bit overkill for your set. Here's why:

At 115 volts, it was rated to consume 100 watts (1946 specifications from service manual).

I = P / E , where I = amps, P = power in watts, E = volts.

I = 100/115 = 0.87 amp.

Add a little more since today's line voltage is on the order of 125 volts in most areas, and your set probably draws close to 1 amp of current.

A 1-1/2 amp fuse should be plenty under normal conditions.

Make that repairman replace any paper and electrolytic caps that have not been replaced yet! Running an old radio with 65 year old capacitors is just asking for trouble. They WILL fail, sooner rather than later.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Re: Rebuilt 46 Philco dead after one hour! - by Ron Ramirez - 02-08-2011, 08:44 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Rogers Majestic R-646
By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM
Rogers Majestic R-646
No, you are wrong, because you did not know the details. Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM
Rogers Majestic R-646
The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM
Rogers Majestic R-646
Thanks RodB for the help. But this is not a real solution to this situation, not even a temporary one. Because the firs...Vlad95 — 11:34 AM
Philco Model 16 wiring question
I was going to check the voltages as you suggested and hooked it up to my dim bulb. It appears I have a short. The bul...bobclausen — 10:34 AM
Rogers Majestic R-646
You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM
HiFi (Chifi) tube amp build - but my own design.
So, here's Prince on stage halfway through Purple Rain when he stoops down to his tech and says "Rod, pull out that...RodB — 09:17 AM
Rogers Majestic R-646
Today I finished inspecting all the parts. The result is not very pleasing. The first positive news: 1) The power tr...Vlad95 — 11:40 PM
HiFi (Chifi) tube amp build - but my own design.
Well, found muh culprit. After using socket test adapters and finding voltages all ok, swapping 6V6s, no avail, swapped ...TV MAN — 11:18 PM
HiFi (Chifi) tube amp build - but my own design.
Well, maybe - maybe not  :lol: It's been an interesting project so far! Something so simple, yet so cranky. The 1st one ...TV MAN — 05:12 PM

[-]
Who's Online
There are currently 1023 online users. [Complete List]
» 1 Member(s) | 1022 Guest(s)
Avatar

>