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

38-116 code 125 volume issues
#21

Ok... Remove the 6J5 driver tube and measure the resistance from pin 2 to pin 7 at the tube base not at the socket. Should see a low resistance of a few ohms.
> no ref in voltage chart for bias on the screen on the driver tube. So we shall see.
Good reason for it as the driver tube has no screen grid.

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


Messages In This Thread
38-116 code 125 volume issues - by simplex1040 - 05-28-2020, 08:59 AM
RE: 38-116 code 125 volume issues - by morzh - 05-28-2020, 10:15 AM
RE: 38-116 code 125 volume issues - by morzh - 05-30-2020, 07:33 PM
RE: 38-116 code 125 volume issues - by morzh - 05-30-2020, 09:22 PM
RE: 38-116 code 125 volume issues - by morzh - 05-30-2020, 10:10 PM
RE: 38-116 code 125 volume issues - by morzh - 05-31-2020, 12:55 PM
RE: 38-116 code 125 volume issues - by Radioroslyn - 06-01-2020, 02:48 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Help with Readrite 410 tube tester
I fixed it. The filament selector switch is not that great of quality. Cleaned it and it takes some fiddling with to get...daveone23 — 06:58 AM
Looking for place to donate unique Philco Philco J-1930 Prototype
It's a vacuum tube set and it's over 60 years old.  My uncle acquired it for my parents when Philco was done with it, an...jeibner — 10:24 PM
Looking for place to donate unique Philco Philco J-1930 Prototype
Hi J Eibner, Welcome to the Phorum.  Lots of Phriendly Pholks with Phine (See a pattern here?) advice. It is very...MrFixr55 — 09:54 PM
Philco 89B code 123 newbie
Or you can do what Terry suggests. Thx Terry for remembering that. A lot cheaper. I remember an article about that, b...MrFixr55 — 09:07 PM
Philco 48-200 alignment questions
Thanks to everybody for all the info so far. RodB, thanks for the additional info. I worked on this radio years ago a...transitony — 08:40 PM
Philco 89B code 123 newbie
Now that I've been thinking about it somewhere I saw a replacement made using a section of pvc pipe and a cap to cover t...Radioroslyn — 08:25 PM
Philco 48-200 alignment questions
Terry's gimmick cap is two insulated wires twisted together about 2 inches long, one wire attaches to the generator outp...RodB — 07:46 PM
Philco 48-200 alignment questions
Hi, in this case I would be certain that pin 7, which is B-, of the 14A7 is not "hot". If it is then reverse t...RodB — 07:39 PM
Philco 48-200 alignment questions
Yup. The gimmick is to take the place of the 100mmfd cap you don't have.Radioroslyn — 07:34 PM
Philco 48-200 alignment questions
Thanks for the reply Terry. Yes I am definitely using an isolation transformer. If I work with your method and connec...transitony — 07:29 PM

[-]
Who's Online
There are currently 1423 online users. [Complete List]
» 1 Member(s) | 1422 Guest(s)
Avatar

>