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

Atwater Kent 708
#1

I decided to start on this AK.  I was getting bored!  this is a radio I purchased at an auction back in March.  I liked the looks so I bought it fairly cheap.  It actually worked as the filter caps had been replaced in the recent past.  Almost all of the wire was rubber and in desperate need of replacement.  Russ put me on to some modern rubber covered wire.  Not as vibrant in color and not all of the colors available, but reasonable.  the cabinet will need to be refinished as there is some veneer pealing and some previous repairs that I hope I can improve upon.

All of the caps have been restuffed ( and they are a bit of pain compared to typical tubular caps of the era) and resistors checked.  A few had gone up in value and a suitable parallel addition brought those into range.  One 1.5 watt was open so I molded a new one.

The radio is now playing very well even though most of the tubes check way below replacement value according to my TT-1.  The 2A6 actually gave me fireworks inside when I tested it.  But, it still works even though the diodes and the triode barely register on the meter.

I'm having an issue where the local oscillator dies on the two high bands as I move toward the lower part of the band.  Increasing the feedback capacitor in the grid circuit for the oscillator remedied the problem, But I need to figure out why it happens.  it could be just a very weak tube.  AK must of gotten a good deal on 58's as all of the front end tubes are 58's.

Now I need to work on the cabinet.  Not my favorite job.  It may wait for a while!

                   


Messages In This Thread
Atwater Kent 708 - by rfeenstra - 10-05-2020, 12:51 AM
RE: Atwater Kent 708 - by rfeenstra - 10-05-2020, 12:53 AM
RE: Atwater Kent 708 - by rfeenstra - 10-05-2020, 12:54 AM
RE: Atwater Kent 708 - by rfeenstra - 10-05-2020, 01:05 AM
RE: Atwater Kent 708 - by morzh - 10-05-2020, 09:25 AM
RE: Atwater Kent 708 - by Phlogiston - 10-05-2020, 10:51 AM
RE: Atwater Kent 708 - by rfeenstra - 10-05-2020, 12:00 PM
RE: Atwater Kent 708 - by rfeenstra - 10-05-2020, 08:57 PM
RE: Atwater Kent 708 - by Eliot Ness - 10-06-2020, 08:15 AM
RE: Atwater Kent 708 - by morzh - 10-06-2020, 10:31 AM
RE: Atwater Kent 708 - by Phlogiston - 10-06-2020, 10:50 AM
RE: Atwater Kent 708 - by morzh - 10-06-2020, 03:21 PM
RE: Atwater Kent 708 - by rfeenstra - 10-06-2020, 09:09 PM
RE: Atwater Kent 708 - by Eliot Ness - 10-07-2020, 01:57 PM
RE: Atwater Kent 708 - by rfeenstra - 10-17-2020, 11:11 PM
RE: Atwater Kent 708 - by Phlogiston - 10-18-2020, 10:07 AM
RE: Atwater Kent 708 - by rfeenstra - 10-18-2020, 12:32 PM
RE: Atwater Kent 708 - by rfeenstra - 10-25-2020, 03:43 PM
RE: Atwater Kent 708 - by Paul Philco322 - 10-25-2020, 05:58 PM
RE: Atwater Kent 708 - by Eliot Ness - 10-26-2020, 01:34 PM
RE: Atwater Kent 708 - by Paul Philco322 - 10-26-2020, 08:57 PM
RE: Atwater Kent 708 - by rfeenstra - 11-04-2020, 01:20 PM
RE: Atwater Kent 708 - by NostalgiaRadioTime - 11-05-2020, 01:38 AM
RE: Atwater Kent 708 - by Eliot Ness - 11-05-2020, 08:47 AM
RE: Atwater Kent 708 - by rfeenstra - 11-05-2020, 10:32 PM
RE: Atwater Kent 708 - by tbone - 11-06-2020, 07:50 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco newbie with P-1891-WA console questions
Hello Jeff , Far as the Electrolytic capacitors go here is a list of parts. that will work . I like using Nichicon and...radiorich — 09:50 PM
Philco newbie with P-1891-WA console questions
Well, I've been stumped at trying to get the first of 11 electrolytic capacitors. I got a schematic and have a list of t...Jeffcon — 07:54 PM
Model 80 Antenna Issue?
Thanks Gary and Rod.  I also found an article in the Philco Repair Bench under Service Hints and Tips, about installi...Hamilton — 12:32 PM
Model 80 Antenna Issue?
Hello Hamilton, here is a little information found in our Philco Radio Library at the bottom of the Home page. Hope it ...GarySP — 11:28 AM
Model 80 Antenna Issue?
I did as you suggested and touching the middle of the volume control did nothing so the coil has to be rewound. Any idea...Hamilton — 10:19 AM
1949 Motorola 5A9M
This would be the second portable in the "other radios" forum where I have a similar one in my collection. I h...Arran — 12:41 AM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hi PittsburgTost. The record changer looks like a Garrard or BSR (Likely Garrard). The spindles just pull out and pu...MrFixr55 — 11:57 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hello PittsburghToast , Welcome aboard and it looks like gary may have something for you ! now if I dig through my se...radiorich — 11:35 PM
Model 80 Antenna Issue?
You are kind of on the right path. You can touch the grid cap of the Detector/Oscillator 36 tube. I'm expecting a respon...RodB — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum, PittsburghToast!  I found an old thread that my interest you regarding the quality and worth of P...GarySP — 08:48 PM

[-]
Who's Online
There are currently 981 online users. [Complete List]
» 2 Member(s) | 979 Guest(s)
AvatarAvatar

>