Smallest round CRT in the world and it works 

I remember that high pitch 16khz horiz osc tone when I enter a room with a TV on. It's a memory now. One could tell when there's a TV playing nearby, even if the audio is turned down all the way.

Correct. I like these little tubes. They are cool just to look at. I like vacuum tube amps too. Not only do they sound great but they look cool glowing away on the top shelf of the stereo stand.

UnFunded Opportunities That was probably a prop

12voltvids - and probably the display screen on a Star Trek tricorder (from the original series) was as well. Even if you could manufacture one (back then) that small that worked, it’d be too fragile to be useful as a stage prop. If they did have any episodes that showed anything on the “display”, it was probably done post-production w/green-screen techniques; ditto for Space 1999 (or the soon to be released Battlestar Galactica.)

The original prop was designed around what then was "the world's smallest TV screen" (the 1971 Panasonic TR-001, 1.5"/35mm across) - from Wikipedia

This is the working Space 1999 prop. 1971 Panasonic TR-001. The screen is 1.5"/ 35mm across. catacombs.space1999.net/main/models/w2pcomlock.html

Ohhh I so much wanted one of these back in the days.

LCD screens are still pretty low res. The best ones use OLED screens. My 2 ligh end cameras use OLED for the eyepiece viewfinder. My cheaper camera I use for the youtube uses an LCOS or DLP tyoe o technology as you can see the bias light hitting the area that borders the image, and if you shift your ele you get the color strobing that early DLP projectors had.

True but at least they are larger and easier to see. One of the cameras I have is able to give me a decent idea of what the picture is going to look like which is all I care about.

My FDR AX100 has both the flip out 3" screen and an OLED eyepiece. Considering that I am at the age where reading glasses are needed for close up work, I find the oled eyeplece is what I use, as there is a diopter adjustment so I don't need reading glasses to focus on that one. If I am on sticks then the flip out is fine as I am generally more than 18" away and can see that fine but closer than that and it gets fuzzy. Oh well, better than it was 8 years ago before I had lasik. I needed glasses for everything beyond 18". Now I can see perfect, no glasses needed except for 2 things. Fine soldering, and splicing fiber optics.

Walt's Channel Yes and it has an ion trap like all modern tubes. So when it is powered off the spot does not hit the center of the screen it bends to the top left.

Well you will probably enjoy this one I did last December when I got my hands on the worlds smallest color TV. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-MyFnqtem2jE.html

Yeah ive seen it , I use my CASIO TV-6500 for video camera instead of the CRT . This little TV cost £90 back in the late 90s at DIXONS in the UK . I wanted it back then but not for £90 , I payed £5 second hand after the TV digital switch over The picture is smudge for the price , not sharp at all but it works for a view finder , or just a monitor .

Have to admit that they are pretty cool. Similar in size to the vidicon tubes in old cameras.

I would love to see a crt rebuilt period. I used to send to a placed called kinex in Burnaby BC but they shut down 25 years ago. They were one of the few that did Trinitron tubes.

First make sure that the viewfinder you are using is actually a composite sync model. Some used external sync from the camera. Most were standard composite sync though, so a coupling cap may be at fault.

If there is an electrolytic on the board you could try checking continuity from it back to the input wires. This will also indicate polarity.

Come October I bet there will be a ton of joints SMOKED here in Canada. The only smoke from joints around this place is from the rosin in the solder when I fix one.

Yep me too. Some flux can smell really sweet, odd that. I had a father that drunk alcohol a lot and took drugs, it programmed me never to follow his ways, i'm tea total.

zx8401ztv I had friends that went down that road. I saw how it messed them up. I know there are plenty of folks that are just counting the days till they can buy it in the store on oct 17 but myself I will just walk on by. What scares me is those that will take and then drive. Lawyers are already running their hands together in anticipation of a booming business once the driving while high charges clog the already overloaded courts.

Jeri has a good guide here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lnkQpbUrPLM.html on how to determine which lead is which without as much risk.

@@edgeeffect Thanks, will check it out.

heyou Standard NTSC video is available from a VCR or DVD player as an RCA Jack labelled Video.

heyou I just put a composite video signal into the video in wire. It has on board processing. You need only 3 wires. Power ground and video. The shield of the video is tied to ground.

They are kind of cool as a conversation piece. This one and the rectangular one i looked at before are mounted in a clear plastic box, with a usb cord to power it up and a video input jack. I can plug into a phone charger and feed a video signal for demonstration. They both display the same image. Most of these went in the trash with the broken camera so there aren't many working examples left.

Nope, don't care. More than likely for timing the on screen graphics. One would be for the red light on the front facing LED to let people know you are recording. The other 2 would most likely be h and v timing signals.

Cliff Miller Was that the ccd m8 by chance.

12voltvids It is!

That is a record only camera. No play back ability. It was sold as part of the pack 8, which had a separate playback unit. (I have the player from the set) The shop I worked at back in 1986 had a bunch of these cameras and we would rent them out for like 30.00 a night. Pretty much every weekend all the cameras were rented out. We never rented out the player, so the customer would get the shop to copy the tape to VHS for them when they returned with the camera. I think we had 5 of them that were rented pretty much every day when Expo 86 was running, and then it was a weekend thing. They would sit there all week, and go out Saturday as they got it till monday. They all got trashed. I remember taking one and mounting it to the bumper of my car and driving around and recording for about an hour.Mounted it in the grill between the fog lights on my old Mercuer XR4 Ti. Now that I think about it, I wonder if I still have that tape. Will have to look and see if I can find that one.

Sure why not.

It came out of a Sony camcorder.

@@12voltvids model?

@@matteoredigolo3149 ccdtr7

It's a conversation piece nothing more. I have 2 of them in a small transparent plastic case powered by a usb charger and video port that feeds both. Just cool to look at what we used to take for granted as the view finder on 80s camcorders.

Yea right 😒