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

Model 620
#1

Wow, What a web site. I've picked up a lot of info but now I have a Model 620 that is kicking my rear. A year ago I recapped the set and it was working fine. It was put away until I could get to the cabinet and now it has failed. No audio was being heard until I touched the grid of the IF tube. I suspected the IF coil but it has good continuity. All tube voltages appear good but if I touch the plate of the 6A7 Det/Osc with a meter probe the radio plays fine. I hope that all of the Philco knowledge out there can point me in the right direction. Thanks to this web site I was able to stop the squeal by rounding up four tube shields that the radio did not come with. Thanks in advance for the help that I know will come.

Dave D
#2

Hi Dave,

I think I would check continuity on the antenna coil. Also clean the band switch with contact spray. Your meter I think was acting as an antenna. It's a start.

Terry
#3

Terry, Thanks for your assistance. You had it nailed. The antenna coil was fine and I cleaned the band switch with no success. I was checking continuity of the switch and found the broadcast band tab was not making good contact with the wafer. Some more cleaning and a little bending of the tab and the 620 lives again. Now I have to get on that cabinet and get this radio finished. Next project is a 37-650 that is going to be a money pit This is a fantastic site and once again, Thank You for your help.

Dave D
#4

Hi Dave,

Great to hear you got it playing. I would really be interested to see the finished product. Icon_biggrin

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model 38 code 121 not receiving signal.
Thank you sir. I thought about it and decided to put it up in the arch support. I was looking at the chassis and didn't ...Stormlord5500 — 06:24 AM
Philco model 38 code 121 not receiving signal.
Congrats on your success Stormlord. My rough guess is that since both the 15 and the 1A6 are supposed to be shielded, I...MrFixr55 — 10:04 PM
The list of my radio & TV collection!
A little light Saturday positive about our hobby in our feed... My new every Saturday video about antique radio equipme...RadioSvit — 02:12 PM
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron. But I can't find those articles.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM

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

>