1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
Philco 47-1227 Almost Playing
Philco47
Junior Member
**
Posts: 11
Threads: 4
Joined: Mar 2019
City: Mint Hill State, Province, Country: North Carolina
#1

05-06-2019, 08:56 PM
Hello All,
I'm new to Philco Phorum and kinda new to radio restoration.  I started my small collection in 1982 but only in the last two years have I been learning/trying to repair them.  Home-schooling myself with books, videos, and websites.  So I have lots of questions.  

I've been working on my Philco 47-1227 for over four months now.  I've replaced everything in the chassis; resistors, electrolytics, capacitors, all 9 tubes. I've tested continuity on coils and transformer. The only thing that looks questionable is the antenna coil. It looks like someone did something to it at one time.

That said, at full power all I get is a low hum on the speaker at full volume. No station will tune in. Tonight I put a low power AM transmitter next to the chassis and could hear music on the speaker. I had to hold the speaker up to my ear to hear it. Moving the tuner made a small change in strength for the transmitter but no stations.

What comes to mind as a possible problem? Could it be the antenna coil? Bad IF coil?
All ideas are appreciated.

Thank You,
Steve


Attached Files
.pdf schematic pt1.pdf Size: 129.77 KB  Downloads: 117
.pdf schematic pt2.pdf Size: 107.1 KB  Downloads: 119
Find
morzh
Odobenus rosmarus
*****
Posts: 15,444
Threads: 539
Joined: Oct 2011
City: Jackson, NJ
#2

05-07-2019, 07:29 AM
Have you aligned it?
Alignment, especially IF will immediately reveal IF coil problems. As well as the others.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM
40-150 General questions
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM
40-150 General questions
I think RobB has it right. It is a part number and looks like its stamped on the chassis and that wasn't something you ...klondike98 — 11:41 AM
40-150 General questions
It's most likely a part number. Most of Philco part numbers are in that format. I looked at the parts list for this mode...RodB — 08:10 AM
40-150 General questions
Hi Kevin, No, I don't but I like your Quote about being a good electrician. The way I look at it is "The fact ...MrFixr55 — 08:06 AM
Philco 38-7 Speaker
7K should be fine. While not a perfect match (This transformer is meant for 6V6 tubes), Antique Electronic Supply (AES)...MrFixr55 — 08:03 AM

[-]
Who's Online
There are currently 2893 online users. [Complete List]
» 2 Member(s) | 2891 Guest(s)
AvatarAvatar

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