Prototype set is here - Page 14 - Videokarma.org TV - Video

miniman82 · #1 09-04-2011, 08:56 PM

Here's the set in question:

http://nashville.craigslist.org/fuo/2520420291.html

I already sent a payment through Paypal, but she has never used it before so we'll see if it goes through OK. If so, I have a job up on U-Ship right now to get it here. There is also another potential Bob alerted me to, this time on Ebay:

http://www.ebay.com/itm/RCA-Victor-T...item45fcd745e4

Of the 2, the second one would be better since it has the smaller 16" pix tube. The developmental tube would fit right in, no mods at all. I have to admit though, I really like the looks of the 19" one with it's double doors and all. I suspect I will end up with both, and I'll have to choose. I have promised a friend first crack at whatever I don't need (tubes/chassis), anything else will be offered here at a very low price.

David Roper · #2 09-04-2011, 09:01 PM

Looks like two 16" sets to me...?

miniman82 · #3 09-04-2011, 09:06 PM

I thought so too, but she looked at the back of the first set at my request: it's a 9-T-79, which uses the 19AP4.

David Roper · #4 09-04-2011, 09:17 PM

You know what they say about looking twice! At first glance both tubes looked the same wrt to the speaker, but I can see the difference now.

miniman82 · #5 09-04-2011, 09:19 PM

Either way, I think I now finally have a chance at getting this thing into a very nice looking cabinet. Now if I could get those stinking schematics finished...

miniman82 · #6 09-05-2011, 12:43 PM

I can always redo the one I have, if I find that one supply requires more current. I have 4 Coke bottle 5U4G's and plenty of caps, so I don't think it will be a problem.

reeferman · #7 09-06-2011, 09:02 PM

Unless I overlooked something...Harry Poster thinks the previous owner just plugged in tubes to sell the set. It would be interesting to see date codes, tube mfrs, and as the schematic progresses if the tubes might be correct for the circuit.

miniman82 · #8 09-06-2011, 10:58 PM

Quote:

Originally Posted by reeferman

Harry Poster thinks the previous owner just plugged in tubes to sell the set.

I don't think that's accurate. All the data thus far points to the tubes being of the right type and in the correct spot for their intended purpose, the only one with a date code later than about 1954 was the 1B3GT HV rectifier. All the others look to be period correct, though a few aren't even connected underneath.

Quote:

It would be interesting to see date codes, tube mfrs...

I'm still in the process of figuring out a way to get all that data into one picture, I don't think it's gonna work. Too much info, it would clutter up the photo. Instead I labeled all the tubes with their type, and perhaps I will create a spreadsheet with all the other info linked by tube number (V23, V24, ect). The chassis has labels printed on it, so it should be easy to figure out.

miniman82 · #9 09-07-2011, 04:48 PM

Just won the TC-168 set on Ebay and I'm still working on getting the other one here from Nashville, should be a week or so before I am looking at them both. Just waiting on U-Ship guys to bid low enough.

ohohyodafarted · #10 09-07-2011, 06:23 PM

Quote:

Originally Posted by miniman82

Just won the TC-168 set on Ebay and I'm still working on getting the other one here from Nashville, should be a week or so before I am looking at them both. Just waiting on U-Ship guys to bid low enough.

GREAT Nick! I think this one will be a good match for the prototype. Keep me posted RE: the 19"

miniman82 · #11 09-08-2011, 12:26 AM

Quote:

Originally Posted by ohohyodafarted

GREAT Nick! I think this one will be a good match for the prototype. Keep me posted RE: the 19"

I think that in terms of being the easiest to adapt to the proto chassis, you are correct. However, I'd just LOVE to have the double door one. Something about it just says 'you know you want to', know what I mean?

miniman82 · #12 09-10-2011, 02:11 AM

TC-168 showed up tonight, not in very bad shape at all. Finish needs touching up, but all in all I'm happy for only $100 spent. Proto chassis fits like a glove, not even an inch on either side of it and the support legs for the CRT mask wouldn't make it at all. Gonna have to figure something out for the CRT mounting, since the front would now be held in the cabinet and the rear supported by the chassis. It used to all be supported by the chassis, not a good scheme with that flimsy plastic thing.

Still waiting to hear about the 9-T-79, I hope to have those details ironed out in the next few days. If/when it gets here, I will evaluate them both and make a decision about which will become the new home for this set.

earlyfilm · #13 09-10-2011, 01:23 PM

Quote:

Originally Posted by miniman82

Proto chassis fits like a glove, not even an inch on either side

Just wondering . . . .

I've never handled a C-73547, but depending on who made and when they made your cabinet's original 19AP4, it is 4 to 5 inches shorter than a production 15GP22, so when you add a couple of inches for the deeper early CRT socket, just how big is your bucket going to be?

Jas.

Electronic M · #14 09-10-2011, 11:32 AM

If the only thing stopping mounting the unmodified porto chassis/CRT combo in the cabbinet is that back board near the top of the cabinet then why not cut it out of the cabinet to make way for the proto chassis?

miniman82 · #15 09-10-2011, 02:16 PM

Tom,

That board in the back is removable I think, but it's not keeping me from using the cabinet. The problem is that the mask is secured to the cabinet, where it was attached to chassis before. Because the CRT mounting is now split between the cabinet and the chassis, some means of supporting the CRT from the rear will be required at least while the chassis is removed. I may be able to make up a bracket that hangs from the top, since that's how it originally worked when this thing was B&W.