1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
A short in that old Philco 77
Steve Davis
Phorum Expert
*****
Posts: 1,410
Threads: 72
Joined: Oct 2007
City: Linn Creek, MO
#2

08-12-2015, 08:04 PM
Quote:UPDATE: when I tried bringing the transformer up with no tubes in it and a dim bulb (15 watts) in series with my variac, I bee a faints glow around 70 volts and a soft glow at 110 volts. I guess that qualifies as a shorted transformer?
Probably not. A 15 watt lamp is too small and would probably glow with no load on the transformer. Bring it up to 115 volts and let it run for an hour or so with no load. If it doesn't get hot, it's probably a good transformer.
Steve
M R Radios   C M Tubes
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
A short in that old Philco 77 - by ccomer1955 - 08-12-2015, 07:34 PM
RE: A short in that old Philco 77 - by Steve Davis - 08-12-2015, 08:04 PM
RE: A short in that old Philco 77 - by ccomer1955 - 08-12-2015, 09:33 PM
RE: A short in that old Philco 77 - by ccomer1955 - 08-13-2015, 11:41 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Yes, Michael. But strangely enough, I managed to keep the original veneer. I must admit that I don't really like it, so ...RadioSvit — 02:21 PM
The list of my radio & TV collection!
Good radio. I bet there was a lot of veneer fixing.morzh — 02:16 PM
Philco 46-480 Electronic Restoration
>> it is because I am retired and a little demented. You have just the right amount of it. No perfectly sane p...morzh — 02:14 PM
The list of my radio & TV collection!
Old Zenith 5S-29 tube radio. First turn-on after repair and reception quality testing. Demonstration of the operation of...RadioSvit — 01:27 PM
Philco 42-345 Restoration/Repair
Welcome to the Phorum, osanders0311!  Regardless how far you intend to restore this set, first priority should be replac...GarySP — 11:51 AM
Philco 46-480 Electronic Restoration
Joseph, it is because I am retired and a little demented. My problem is that I wanted to own a collection that spans th...MrFixr55 — 11:29 AM
Philco 46-480 Electronic Restoration
Wow, here I am with only two restored radios. I’ve got to boost those numbers! If you can’t run with the big dogs, you m...jrblasde — 10:04 AM
Philco 46-480 Electronic Restoration
Hello MrFixr55, That will for sure keep you out of trouble! Last Sunday was spent mostly doing yard work anyway the we...radiorich — 09:50 AM
Philco 46-480 Electronic Restoration
Throw in all the Audio equipment that has to be kept in a bedroom (my office)L. 8 portable self contained PA speakers, ...MrFixr55 — 07:40 AM
Philco 42-345 Restoration/Repair
Looking at the pic supplied by Rod B, you can duplicate the missing loop antenna. 10 gauge copper wire can be used to m...MrFixr55 — 01:20 AM

[-]
Who's Online
There are currently 266 online users. [Complete List]
» 1 Member(s) | 265 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration