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

60MB needs some love
#18

Added the power cord, put all the tubes back and wired in the speaker.  The dial scale needs some work to flatten it out but that's for later...here's the finished under chassis and the topside.
[Image: https://www.dropbox.com/s/s9bza5iscoi7pg....jpg?raw=1]
[Image: https://www.dropbox.com/s/58nm69se3irr1l....jpg?raw=1]

Dim bulb showed no shorts but ramping up the voltage brought nothing except the pilot lamp and the 42 filaments ....hmmm.  Deoxit and pipe cleaner on the tube sockets and some cleaning of the tube pins gave better results...some crackling and humming of the speaker.   Voltages readings noted below:

[Image: https://www.dropbox.com/s/1x78i2qhume537....png?raw=1]

The 75 tube failed when tube tested on the grid cap so one is on order.  Thought I'd try it anyway.  Is that causing the negative voltages on the CG to K line?  (Power input is at 110v ac)

I thought I had checked the coils but decided to check the antenna coil and when I measure ANT to GND I get an open .   Icon_sad   (rechecked other coils and they ohm out OK )  Maybe I damaged the coil during derusting, recap etc.?
[Image: https://www.dropbox.com/s/7rh0trk69vm8kt....jpg?raw=1]

When I measure from the ANT lug to one side of the #1 (10k) resistor located on the Band Switch I get 11ohms but from that point to GND  is open so the 0.7 ohm section of the coil must be what is open.  Does that sound right to you guys? 


Messages In This Thread
60MB needs some love - by klondike98 - 02-21-2015, 12:36 PM
RE: 60MB needs some love - by Ron Ramirez - 02-21-2015, 12:52 PM
RE: 60MB needs some love - by morzh - 02-21-2015, 01:12 PM
RE: 60MB needs some love - by klondike98 - 02-21-2015, 03:10 PM
RE: 60MB needs some love - by klondike98 - 03-10-2015, 07:14 PM
RE: 60MB needs some love - by Ron Ramirez - 03-10-2015, 10:02 PM
RE: 60MB needs some love - by klondike98 - 03-10-2015, 10:13 PM
RE: 60MB needs some love - by klondike98 - 03-11-2015, 10:13 AM
RE: 60MB needs some love - by George Kirk - 03-11-2015, 02:15 PM
RE: 60MB needs some love - by klondike98 - 03-11-2015, 02:23 PM
RE: 60MB needs some love - by klondike98 - 03-11-2015, 07:50 PM
RE: 60MB needs some love - by Mondial - 03-12-2015, 12:01 AM
RE: 60MB needs some love - by klondike98 - 03-12-2015, 01:51 PM
RE: 60MB needs some love - by klondike98 - 03-15-2015, 07:50 PM
RE: 60MB needs some love - by sam - 03-15-2015, 08:06 PM
RE: 60MB needs some love - by klondike98 - 03-15-2015, 08:19 PM
RE: 60MB needs some love - by klondike98 - 03-17-2015, 09:39 PM
RE: 60MB needs some love - by klondike98 - 03-19-2015, 10:04 PM
RE: 60MB needs some love - by Mondial - 03-19-2015, 10:58 PM
RE: 60MB needs some love - by klondike98 - 03-20-2015, 11:43 AM
RE: 60MB needs some love - by Ron Ramirez - 03-20-2015, 12:05 PM
RE: 60MB needs some love - by klondike98 - 03-20-2015, 12:08 PM
RE: 60MB needs some love - by klondike98 - 03-20-2015, 07:47 PM
RE: 60MB needs some love - by Radioroslyn - 03-20-2015, 07:56 PM
RE: 60MB needs some love - by sam - 03-21-2015, 05:32 PM



Users browsing this thread: 4 Guest(s)
[-]
Recent Posts
Philco 50-925 antenna connections
Hello Keith, great news !! Sincerely Richardradiorich — 02:14 AM
Philco 50-925 antenna connections
Finally, got the antenna fixed (repaired some broken wires) and have the radio playing. I've got four different schemat...keith49vj3 — 09:38 PM
1949 Motorola 5A9M
Bob, Nice radio.  I’ve not seen one before.  Keep us updated!Joe Rossi — 07:56 PM
Phioco 90 Power Transformer Wire Colors
Thanks for adding that information.klondike98 — 06:09 PM
Phioco 90 Power Transformer Wire Colors
Although I have used this site as a resource for a number of years this is my first post.   I am restoring a Model 90 si...vincer — 05:02 PM
My collection presentation
There is a complete instruction how to solve your problem. One piece of advice - be careful with the low-voltage capacit...Vlad95 — 09:32 AM
My collection presentation
Vlad; I thought your brown RCA portable looked familiar, I have one that is very similar, the RCA-Victor model BX-55....Arran — 02:31 AM
Value of capacitor
OP is "original poster"klondike98 — 11:05 PM
Value of capacitor
What is an OP?  Looks like the “OP” mistakenly typed electrolytic.  Lets forgive him.Joe Rossi — 06:31 PM
Another amp build - here I go again!
How many amps a man can have? I say, as many as the space can hold.morzh — 10:01 AM

[-]
Who's Online
There are currently 446 online users. [Complete List]
» 1 Member(s) | 445 Guest(s)
Avatar

>