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

Philco 16B Shoulder Tombstone reception problem
#1

Hi All,

I just recapped this radio and it plays, but does not have much volume and has a little static. This occurs with or w/o the antenna wire hooked up to the clip in the rear of the chassis. (Usually when I connect the antenna to any radio, It receives stations much louder and clearer.) When I touch the 1det (77) tube with the tip of my soldering iron, it plays loud and clear the way I would expect it to play after hooking up the antenna wire.

I checked the antenna coils before the RF amp and they are showing continuity as well as the coil before the 1 det. No opens. Going back and touching the plate of the 78 and either side of the 110 mmf capacitor with the iron just prior to the 77 tube gets great reception as well. I am not sure what to troubleshoot from here. I know the problem must be prior to this 110 mmf capacitor, but have no idea where. Any help would be appreciated.

Thanks,

Steve
#2

Sounds like an alignment problem. Check your rf then your if coils for proper adjustment.
Terry
ps just looked at the diagram, check for plate and screen grid voltage on your rf amp tube.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#3

Thanks Terry for your input. IThe voltages were very low and it turned out to be an open resistor between the kathode to ground on the 78 tube. It's playng well now.
Steve
#4

That's great that it was an "easy" fix! The next suggestion was going to be the band switch (NO FUN AT ALL!!)
Terry

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
New Philco Repair Bench
Morzh is correct. The repair bench on our website is an archived image of chuck’s original site. He no longer provides s...klondike98 — 05:32 PM
Made mistake & did not label connection
Excellent information. It is all starting to come together now and your explanation really helped since I noticed that ...georgetownjohn — 04:39 PM
Made mistake & did not label connection
Hi John, I don't have this radio, but I can supply some info: Based on your pic, pins 7,8 and 1 are used together, go...MrFixr55 — 02:02 PM
New Philco Repair Bench
As far as I know, the Repairbench does not work, and has not been working in a while. Chuck (we had that campaign looki...morzh — 01:33 PM
Radio city products 664 schematic request
Need a schematic or manual for the 664. The 663 may be similar.daveone23 — 12:38 PM
New Philco Repair Bench
Thanks Gary.dconant — 12:16 PM
New Philco Repair Bench
I tried accessing the site through our library and got the same response. It's reported to our tech gurus. GaryGarySP — 11:50 AM
New Philco Repair Bench
I am sure this is the archive, and not the Chuck's site.morzh — 09:50 PM
Made mistake & did not label connection
It's not like we are good friends with that wire and can tell it from other ptetty identical looking wires. Why'n't you...morzh — 09:49 PM
Made mistake & did not label connection
I'm not sure why that wire wasn't covered in the video. I'm pretty sure the 6A8 won't work until that pin is grounded. Y...RodB — 09:47 PM

[-]
Who's Online
There are currently 6258 online users. [Complete List]
» 1 Member(s) | 6257 Guest(s)
Avatar

>