What Monitor Chassis Goes With This Tube ?

[Infa Red]

Hi guys -

I was given a free 19" Samsung A48KRD82X02 tube. No burn !
I do not know how to identify and find the Monitor Chassis, boards, etc.. that was suppose to go to this originally. Basically everything needed to make it work to original factory spec.

Googling I came across Kortec, but was unsure if that just worked, or if it was indeed original. Also what I found was for the 20" model, and I have 19" viewable, 20" total - so unsure how they gauged that and which one I should get.

Furthermore, this is set up to mount Horizontally, so I would like to find the optional vertical mounting brackets for this model too.

So thanks in advance for any referrals/input.

[grantspain]

read the yoke, minimum you need is the impedence but really could do with inductance readings
bent pin on the neck but i imagine you have already seen that

[Infa Red]

read the yoke, minimum you need is the impedence but really could do with inductance readings
bent pin on the neck but i imagine you have already seen that

Hi GrantSpain, thanks for chiming in. I did for sure see the bent pin(s), but that's a easy fix I can do. My main question is what is the name exact model number and brand of Neck board and Monitor Chassis that originally came with these tubes ? As I would like to purchase it to get it running back to factory spec.

And the other question is, where can I find it once we identify what brand/model it is. Also a vertical mounting bracket for it.

Thanks guys !

[grantspain]

it does look it could have been a kortek but early kortek were high impedence yokes hence why i asked you to check

[Infa Red]

it does look it could have been a kortek but early kortek were high impedence yokes hence why i asked you to check

Oh, haha, that's what you meant. Ok. Sorry, I am new to this, don't really know how to "read" the yoke or get what info you need unless you can give detailed instructions on exactly what to do. I do have some tools DMM, etc.. and I am mechanically inclined somewhat. Also willing to buy the tools I need.

Ideally though, I was hoping we could just go by the model of the tube and yoke and pin number to determine what was originally in here. This way I do not bother you for so much info and help.

[grantspain]

multimeter, set to ohms
read each winding pair
blue/red are horizontal
green/yellow are vertical
i would expect a reading of between 1.8 and 2.6 ohms horizontal and 8 ohms to 15 ohms vertical for low impedence
photo of the pins straight on please but it looks like a standard tube to me

I think this matched to the kortek ktm-f 20 btw

[Infa Red]

Thanks for this - I will do the reading a little later today. Just to be clear, for doing something like this, do I need to discharge a tube ? Or that only applies if a CRT is all complete ?

And to confirm, its as easy as sticking my prongs into the plug that contains the 4 wires, r/b , g/y itself correct ? (see pics)- I do not need to find any secret weird place on the yoke ? And does polarity matter on this as far as which probe lead touches which color wire ?

The pin is a 9 pin. I will also get pics of that later - but I counted 9 pins.

[grantspain]

no need to discarge as it already is
probes into the pins and away you go

a multitude of chassis will match this tube imo

[Infa Red]

Sorry for the delay. I got super busy last couple days.

So I straightened the pins out, and while doing so, seen that I missed a pin when I was counting. There is one hiding in some covered up cave like area. lol So there is 10 Pins - See Pic.

Next, I hope I did the Ohms test properly. So I took pics. I figured polarity didn't matter, so I just plugged the pins in to the colored wires you said. At first, my DMM was reading anything, and wouldn't;t on any setting until I changed it to "200" - then it read as the pictures show. Which I think is correct, because the readings are dead on what you predicted. But let me know if I did anything wrong and I will do it again as you instruct.

[grantspain]

standard low impedence chassis

[Infa Red]

standard low impedence chassis

So, what are my best options ? I am new to this, but applying general rule of thumb to things, even though say several things would work, usually matching what they originally came with is best as it functions properly and all features (if any) respond/function as intended from manufacturer. Is this the same with monitor chassis to tubes ? Like best response/look/function/factory specs/etc.. will only happen if using the stuff it shipped with ? Or of the likes.

That said - so what's its name, model and where can I find it ! I'm ready.

[bobbyb13]

It is an arcane art.

If you search around here you'll find lists of yoke reistance and impedence values for both arcade monitors and consumer tubes that you can use to try and match stuff up.

Neck diameters and pin counts too.

It isn't impossible to find matches but takes a little research and patience.

Like Mike A suggests, unless you have geographic issues like yours truly, then better to just find original complete monitors and repair those.

Many old ones are well built, robust and are repairable.

[Zebidee]

CRT neck pins look a little rusty, give them a buff for good luck

[Infa Red]

better to just find original complete monitors and repair those.
Many old ones are well built, robust and are repairable.

Oh for sure - I plan on doing that too. But this came to me now, and it'd be fun to get it going. It looks relatively new ! From my research, there are several entire monitor chassis available online here and there that contain everything other than the tube (which is what I have). I just need to know the model name/number of the monitor chassis that goes with this tube, then I can put them together. Hence why I was asking.

So far my research has brought me to Kortec and another I forget, but the model numbers I found the guy was saying was for a 20" and I have a 19" (though the same exact tube model number. I guess tube model numbers can be the same for all the different sizes ?) - And I want to make sure what I got works. eBay has tons, again, I just need a verification of which one is the correct one. Ideally I'd like to get the one these shipped with - which I believe is the Kortec ?

I also heard 10 pins is harder to find. Sucks, cause thats what this is.

CRT neck pins look a little rusty, give them a buff for good luck

Good call ! Will do. Small area, especially between the pin edge and the electron gun assembly chassis thing.. so I will use some 1,000-2,000 grit sandpaper pieces and coil them up perfectly to get around the whole pin and polish them all up good one by one. Of course being very careful and gentle.

I heard that thing can implode if you are not careful. So while working close to it like that, I imagine some safety glasses is smart ? Or not needed ?

Anyway, thanks guys - if someone comes up with a brand name and model number of the proper Chassis, please let me know - thanks.