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

Philco 49-901 restoration
#6

All the tubes appear to be the originals and test very good Icon_smile
[Image: https://farm5.staticflickr.com/4788/3898...2b16_z.jpg]

There does appear to be one old repair. The 0.1uF in series with a coil that connects the chassis to B- appears to have been replaced with a 0.2uF Philco branded cap.

You can see it in the background here. The big bakelite looking cap in the foreground is right across the AC line. I clipped it out and will replace with a cap rated for across the AC line operation (X series).
[Image: https://farm5.staticflickr.com/4795/4075...91b6_z.jpg]

I also clipped out the three section electrolytic cap and tacked in temporary replacements and powered it up.

B+ came right up and it actually works! One of the presets is set close to WGN and I was able to hear it clearly. Now it's not perfect, but not bad for old, leaky caps. Now I'll go ahead and replace all the paper caps and mount the new electrolytics more c=securely and safely. The line cord needs to be replaced too.
[Image: https://farm5.staticflickr.com/4782/3898...c6ce_z.jpg]


Messages In This Thread
Philco 49-901 restoration - by Bob Andersen - 02-27-2018, 12:01 AM
RE: Philco 49-901 restoration - by Bob Andersen - 02-27-2018, 12:53 AM
RE: Philco 49-901 restoration - by Ron Ramirez - 02-27-2018, 06:54 AM
RE: Philco 49-901 restoration - by Bob Andersen - 02-27-2018, 11:00 AM
RE: Philco 49-901 restoration - by Bob Andersen - 03-13-2018, 03:03 PM
RE: Philco 49-901 restoration - by Bob Andersen - 03-16-2018, 06:06 PM
RE: Philco 49-901 restoration - by Arran - 03-17-2018, 04:27 AM
RE: Philco 49-901 restoration - by Bob Andersen - 04-06-2018, 05:42 PM
RE: Philco 49-901 restoration - by Bob Andersen - 04-13-2018, 10:14 AM



Users browsing this thread: 5 Guest(s)
[-]
Recent Posts
Philco 42-1008 conversion kit
I read about a kit to convert the variable speed changer in the Philco 42-1008 into a single speed unit.  That would rem...alangard — 09:30 PM
HiFi (Chifi) tube amp build - but my own design.
Tim Well...a chassis is metal. Magnetic or not, it does not matter. A transformer has some hum to it. It is natural....morzh — 08:40 PM
Hickok AC51 tube tester
I thought the 83 tube was bad because it looked white but it tests strong. Blue gassy though. I checked the fuse, it was...martinj — 08:37 PM
Shadow Meter Bulb
Ross I am not sure what current limiting effect the incandescent provides. They are two different parts of the sch...morzh — 08:31 PM
12' Philco
Bob Thanks for that photo. I have been looking for it, and I cannot find anythinmg on the web. I forgot it was here...morzh — 08:29 PM
Shadow Meter Bulb
I think after all has been said, I will use the same bulb that is specified for the dial pilot light which is a #55. I ...georgetownjohn — 07:31 PM
12' Philco
There was also this Philco! klondike98 — 07:25 PM
HiFi (Chifi) tube amp build - but my own design.
I expected a challenge and this is just part of it. But, it's also supposed to be fun, entertaining, informative and enj...TV MAN — 07:12 PM
Shadow Meter Bulb
Butting in here with a question. Since the shadow meter is connected directly to the 1st and 2nd I.F.'s wouldn't the met...RossH — 06:43 PM
HiFi (Chifi) tube amp build - but my own design.
Mike, Tim; you are about to enter the twilight zone. Doo doo doo doo, doo doo doo doo This is something alright. I'm go...RodB — 06:26 PM

[-]
Who's Online
There are currently no members online.

>