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Ideas for using a TM-1700PN Chassis?

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Slypty

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So a little while ago I managed to break a Philips M41 minineck tube. This is what comes stock in a JVC TM-1700PN, or in my case a Victor TM-1700 (JP.)

Anyways I didn't pay much for it, but finding a replacement tube is difficult in Canada, where 17" CRT's don't grace our landscape like in the UK or Japan. Instead, we have PC CRTs at 17" only, which are 99.7% 31Khz and higher, making adapting to this chassis very difficult.

So I'm looking for ideas. But first, I don't want a downgraded Consumer monitor. I will only settle for an M41 (low dot pitch) tube.. it just isn't worth it to me to find a consumer grade tube. (I know I'm snobby)
Idea List Start Point
1. Import a Philips LTC2917 CCTV. According to Console Modes, they are one and the same: https://consolemods.org/wiki/CRT:TM-1700PN
2. The socket is shared with a lot of arcade monitors (B10-277) such as K7000 and many more. A compatible but higher grade tube would be desirable. Any 17" Sanwa tubes out there? Maybe a fit.
3. Solder a CR23 socket on to the neckboard and just adapt the pinout. Though this sounds easy, I'm STILL having trouble finding a yoke with the right impedances. Since it's a minineck tube, going to a regular neck means I can't swap the yoke over.
4. Impedances seem to be roughly 3,6 RH and 12,2 RV. Anybody know a similar 17" M41? Or even have one?
5. Last thing I could do is get a universal chassis, and buy a whole NOS tube and screw the chassis.
6. Does anyone want to buy a TM-1700 chassis?
 
In my experience, most people domestically will refer to "minineck tubes" by the B&K Precision designation: CR-31 necks (22.5 mm or Base type B8-294 ).
Whereas a "standard" neck size is referred to by the B&K Precision designation: CR-23 (29mm or Base type B10-277).

To clarify, you necked the existing CR-31 tube and are looking to replace the M class tube on your TM-1700 chassis with another CR-31 tube equivalent? If that doesnt work then you want to potentially convert the existing chassis to work on a CR-23 tube?

I have only encountered high dot pitch shadow mask tubes (including PC monitors) that use a 29mm neck and only sometimes a CR-23 base. Service manual to the Phillips LTC2917 says the tube part number is M41EEM311x360. No results were found running that tube on tubular reference. http://tubular.atomized.org/ Is that the correct tube model number?
 
Thanks for the help, it is the correct tube model. I ended up just selling the chassis to a guy in Italy that has a dead board. I did the math, and I'd be making the same amount if I bought an LTC2917 and refurbished the whole thing, as I would to just sell the chassis. I'm just down a bit on the idea that 17" sets with 15khz capabilities have become rare. Doesn't sound like I'll be able to find a matching tube easily or with out much risk and cost, so the chassis sale isn't the worst thing anyway.
 
Got it and glad it worked out. FWIW, I think you could find a 17" set that could be modified for 15khz capabilities. Aside from the existing arcade monitors in that approx. size (Sharp XM1801, Sanyo 18Z, Nanao MS-18, etc.), I think finding a computer monitor tube (overwhelming 29mm and usually CR-23) and finding a 15khz CR-23 yoke and chassis to pair with the tube could work. Yoke swap would be required. The above is also assuming that the dual focus computer tube can accommodate a single focus chassis, something that I have always thought is theorhectically possible but havent had the opportunity to try out myself.
 
Thanks, I still have all the exterior shell parts, so if I find a suitable tube I could just drop a universal chassis in there. Though I'm not a fan of having mismatching buttons on the front panel
 
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