Setchell Carlson Model 2500
 

Anybody by chance have Sams 144-9? I'm curious what CRT this SC floor model TV uses. Thanks for any help.

Figures - #9 is missing from my folder :(

Well thanks for looking.

It may actually be a model 2500 or 2500LP with a record player. I think the 150 is a table model. Anyhow they should all be in that 144-9 folder.

I believe it's a 17BP4.

Steve

Yep, I picked the set up this morning. It has a Hytron 17BP4A in it. Looks like it may have some life left in it, at least it's testing good after a half hour at 7 volts on the heater. Huge modular aluminum chassis in this set.

That thing is built!

I see a loop aerial on the right side of the cabinet interior. Does this set have an AM radio? I can't wait to see more pictures of this one.

Very interesting chassis layout! That should be a fun one to restore. Something a little different.

I saw that set on CL but I've got too many projects now. It has a very neat look. Can't be many around as I've only seen one or two over the years. Glad it went to a good home. Gotta be one of the first Setchell tv's.

I'll post a couple cabinet pictures when I can get a little more light on the subject.

The neat thing is that this set spent it's entire life(up until today) in New Brighton MN, the very town it was made in.

My initial thought was to steal the 17BP4A for another project, but now I'm getting the itch to see how this SC performs. There is an AM radio in it. Also has a location for a phono, but the owners son told me this one never had a phono installed. Apparently the phono option was the only difference between the models 2500 and 2500LP.

Setchell Carlson
 

WOW!!! If I did not know better, I'd think that was 6 Tektronix O-Scope plugins bolted onto that chassis. Amazing set and great score!:yes:

IIRC, SC made some institutional 23" BW sets in the mid-60s with the unitized chassis. Talk about being EASY to recap!!!

Setchell Carlson Model 150
 

Yes, Dave You Do Remember Correctly (YDRC).:D

When I was in high school in the '70's, we had them in every room, mounted to the wall, hospital style. About 100 classrooms total. They were beige metal cabinet sets. The "unit-ized" chassis in those sets had exposed tubes on each module, not totally enclosed like the model 150 being discussed here. They might have gotten an average of 1-2 hours a day use. They contracted repairs with a local shop. I often wondered why our electronics students were not repairing the sets. We had the instruments, capability, and were fixing students' and teachers' sets.

Students were able to view video taped lectures from teachers with greater detail than normal lessons if you were stuck on a concept. Mostly science and math. The tapes were housed in an AV Room, and could be ordered by number over an in-room phone handset. They were piped into the classroom over closed circuit coax. The video could be delivered to one, a group, or all classrooms. Later, they did color video on demand using Asian built sets, with both local and remote live video, as well as VHS/DVD capability.

Yeah, we were a rich kid's school! Federal funding from the 1960's model schools program did not hurt either! :thmbsp:

Freudian slip? I thought that town was New Brighton :)

I am curious about that modular design. Is this a hybrid set? My cash-strapped local library cancelled its Sams subscription, so I can no longer download free Sams manuals just for leisure time reading.

Phil Nelson

My bad, thanks for the correction.

Not sure what you mean by hybrid? This one has AM radio, with an open space for a phono option.

Couple pictures of the front. Not really much of a looker, but not too ugly. I do have an original SAMS coming for it.

By hybrid, I meant a combination of solid state and tubes. Looking at your latest photos and guessing the age, I suppose it's basically a tube TV. I associate this level of modular design -- everything divided into replaceable chunks -- with newer solid state stuff, but what do I know? It would be interesting to see how they divvied everything up into those boxes, anyhow.

Phil Nelson

I think this set dates to 1950-51 with a 17BP4 CRT. It's in SAMS folder 144, so where does that put it?

I'd rather think the modular design was the outcome of SC doing war contract work, but that's just a guess. Even my portable P65 from 1959 is modular, but not the extent of this set. On this set even the power transformer, choke and rectifier are built on one plug in module.

Here's what the power supply module looks like removed from the chassis. Suspicious how those two red transformer wires have been snipped from their respective connector terminals.

I Just noticed I'm about to run out of attachment space. 18.22M out of 20M available :no:

Maybe they weren't used in this model ? Try one the free photo hosting services like Flickr or Photobucket.

Not too much recapping to do under the main chassis. :D

http://i452.photobucket.com/albums/q...g?t=1341878715

I tried reducing the image size on Photobucket to 640 x 480, yet I'm still getting too big of picture here. Any idea's what am I doing wrong?

Trying again.

http://i452.photobucket.com/albums/q...del2500010.jpg

http://i452.photobucket.com/albums/q...del2500011.jpg

Seems to have worked but my first photobucket linked picture seems to be stuck at full size. :scratch2:

Try to upload the new size picture to Photobucket and then change the link in your post to the new file name...

Tried it, still comes up super sized. It's like the forum is still storing and bringing up the original img file.

Here's the photobucket link to the picture. http://i452.photobucket.com/albums/q...del2500012.jpg

Edit- wow even the link comes up the wrong size, yet when I view the album image size on photobucket it's 640 x 479. Even deleting the picture from my album did not make it go away. :screwy:

Finally got it. Had to cut and past the image location instead of using the Photo IMG code link-to feature. No idea how that works.

Well, that's sure a different design for the early 1950s. Easy to service, but expensive to manufacture. And from a customer's perspective, this TV wouldn't work any better than one built the old-fashioned way.

Phil Nelson

I wonder if all those plug-ins wouldn't be a source of intermittents. Just think of oxidized tube pins and tube sockets, multiplied.

That's exactly how it works with almost any forum that allows pictures in the thread. But back to the original, very interesting set!

Finally had some time to do a little above chassis housekeeping. Most of the yuck came off without too much trouble. Used a combination of water, denatured alcohol and Windex. Didn't realize it at first but the tuner is also a plug in module. All the sub-chassis are aluminum, except for the IF chassis which is steel with cad plating. I was going to rob the CRT from this set to use in another TV- but now I've decided to recap this one to see how well it performs. It's a very interesting set and I don't think I can part it out. However I may borrow the CRT eventually.

http://i452.photobucket.com/albums/q...g?t=1342822026

http://i452.photobucket.com/albums/q...del2500009.jpg

http://i452.photobucket.com/albums/q...g?t=1342821838

http://i452.photobucket.com/albums/q...del2500011.jpg

Am I correct in reading the CRT date code from 1953? I assumed all the Hytron tubes were original to this set. 53 seems a couple years late according to the dating on the Sams folder for this chassis. :scratch2:

Setchell-Carlson seemed to make the same set for a few model years. Either that, or the CRT was replaced under warrantee.

You're probably right.

I was studying the Sams schematic last night when I realized this TV has a Series 60 horizontal(F) module instead of the original series 2. The series 60 replaced the original 6BQ6, 6W4, 1X2, 12BH7 with 6DQ6, 6AX4, 12AU7, 1G3. The series 60 seems to have showed up in around 1959. Same basic circuit with updated tubes. Pretty neat how SC had these newer modules designed so they were backwards compatible, and apparently shops took advantage when swapping modules in the customers home.