How to find schematic using only tubes?

9/6/2008 7:45:05 PMdelinmn

I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/6/2008 8:20:34 PMBill VA

The 1950 Chevy truck had a radio with those tubes. Radio 986443. What's your model number?
Bill

:I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/6/2008 9:30:09 PMdel in MN

Ihave the schematic for the 986443. But the tube layout is different. I have just fixed a 986443 and it runs fine. The one I now am having trouble with uses the same tubes but its model number I found out ends with ???????77 Chevrolet pickup radio. Thanks

:The 1950 Chevy truck had a radio with those tubes. Radio 986443. What's your model number?
:Bill
:
:
::I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/6/2008 10:07:45 PMBill VA

You are the one fixing car radios and I can't read the tube numbers. Here's all I had.

:Ihave the schematic for the 986443. But the tube layout is different. I have just fixed a 986443 and it runs fine. The one I now am having trouble with uses the same tubes but its model number I found out ends with ???????77 Chevrolet pickup radio. Thanks
:
::The 1950 Chevy truck had a radio with those tubes. Radio 986443. What's your model number?
::Bill
::
::
:::I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/6/2008 9:22:13 PMSteve J

You can try an on-line search by tube numbers here about half way down the page:
http://www.radiomuseum.org/

9/6/2008 9:31:41 PMdel in MN

I will try this site. Thanks.

:You can try an on-line search by tube numbers here about half way down the page:
:http://www.radiomuseum.org/
:
:
::I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/6/2008 9:48:30 PMdel in MN

Nothing found at radio museum .org Thanks. Still need to find tube layout with the last numbers for 1950 Chevrolet ?????77. 6sk7, 6sa7, 6sk7, 6sq7, 6v6, 0z4.

:I will try this site. Thanks.
:
:
:
::You can try an on-line search by tube numbers here about half way down the page:
::http://www.radiomuseum.org/
::
::
:::I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/7/2008 12:55:40 AMGeorge T

:Nothing found at radio museum .org Thanks. Still need to find tube layout with the last numbers for 1950 Chevrolet ?????77. 6sk7, 6sa7, 6sk7, 6sq7, 6v6, 0z4.
:
:
:
: :I will try this site. Thanks.
::
::Hi Del, you might have a substituted tube or two. I had a chassis run me for a loop one time do to a substituted tube. Good Luck, George T.
::
:::You can try an on-line search by tube numbers here about half way down the page:
:::http://www.radiomuseum.org/
:::
:::
::::I am starting over> My 6 volt auto radio is causing me much trouble. I had it working or so I thought. Now I have spent most of the day having funand not getting anything done at all. But I did not have a schematic. So I must find a 1950 Chevrolet radio schematic with 2 6SK7, 1 6SA7, 1 6SQ7 and 1 6V6, OZ4 and negative ground vibrator. Any idea where to look just using tubes?

9/7/2008 8:09:52 AMdel in MN

Thanks to all. Still trying.

9/7/2008 9:35:35 PMJohnny

: Thanks to all. Still trying.
:
:There's a site that I go to and I came up with this.
Galvin Manufacturing Corp. Model #'s 34K6, 29B-6, 25F, 35N.
Howard Radio Co. Model # HA10.
United Motors Service Model #'s R677, R678, R679, R687, R688.
My info is found by inputing tube types and quantities. It is through Grillcloth.com but there is a trick to getting into this info part of the site. I just have it bookmarked and I haven't figured out how to get there manually. Hope this info helps and I will work on that site address.

9/8/2008 7:24:31 AMdel in MN

I am putting this radio aside for a bit until I can spend time on it. Thanks to all for the help. I merely need to find where the 6 v from the switch leads into the first heater and the CT on the input side of the transformer.

9/8/2008 9:41:56 AMSteve Bento

Hey Johnny, any chance you can let us know how to get to that site. I'd be interested in trying it out...
Steve

:My info is found by inputing tube types and quantities. It is through Grillcloth.com but there is a trick to getting into this info part of the site. I just have it bookmarked and I haven't figured out how to get there manually. Hope this info helps and I will work on that site address.

9/8/2008 9:45:23 AMSteve Bento

Oops, just saw that you didn't know how to get there manually. Could you send the bookmark - you should be able to see the link by looking at the properties of the bookmark.

:Hey Johnny, any chance you can let us know how to get to that site. I'd be interested in trying it out...
:Steve
:
::My info is found by inputing tube types and quantities. It is through Grillcloth.com but there is a trick to getting into this info part of the site. I just have it bookmarked and I haven't figured out how to get there manually. Hope this info helps and I will work on that site address.

9/8/2008 12:13:02 PMAndy Rolfe

Steve: Try www.grillecloth.com/sylvania/intro.html
This takes you to the database instruction page. Then click on "Radio Finder DB" from the list on the left hand side of page.

Andy

9/8/2008 2:10:02 PMJohnny

:Hi Steve, Andy's got it there. When you get to the site Andy referenced just click on the "Radio Finder DB" on the left of the screen and that's it. I was getting there some round-about way but Andy's is the easiest.
:
:Hey Johnny, any chance you can let us know how to get to that site. I'd be interested in trying it out...
:Steve
:
::My info is found by inputing tube types and quantities. It is through Grillcloth.com but there is a trick to getting into this info part of the site. I just have it bookmarked and I haven't figured out how to get there manually. Hope this info helps and I will work on that site address.

9/8/2008 3:29:00 PMEdd

When you mentioned a Feeeeefty Fordecito, the first thing that came to my mind was those solid metal…heavveeey. . . round volume and , tuning knobs.(You gotta set like those?...that would be a saggging bag full !)

Since you were talking on another thread about the fuse failing on it, if you have that fuse , how’s about inspecting its internal link and lets see what clues it can give us initially.

If the onset of current consumption was gradual, and then the fuse opened, upon its mechanical inspection, there typically would be just a gap in its wire link.

HOWEVWER, if there was an instant overload, one would expect to see the link vaporized, or if at that extreme , the presence of some blackening having occurring inside of the glass over vial.

As for the schematic for the unit, see if this one referenced below will work, with the two variants being:

1. . .The utilization of a dual power switch assembly where one section carries the radio proper while the other switch section is merely used for the dial light lamp(s).

2…The 6X5 shown is replaced with the filamentlesslessless, gas OZZIE- 4 for the power rectifier for the unit.

Can we assume that the radio is now in the condition, such that it will blow a new fuse the instant that it is installed ?
As
you refer to the schematic , that would only include the fuse to switch wiring, with the additional possibility of C30 plus , C31 and 34 spark plate pairs and L10 RFC choke.
If occurrence is after the switch is flipped on, that would be mainly concerning the vibrator supply. With it being the real current hog of the set.
That is why I had mentioned unplugging the vibrator proper in an earlier reply. . . .but I had. . . and still do not have full details on the “failure” situation.

Le Radio Schematique…sez:

Right 'chere I is. . . . . BAM
!

73's de Edd