Couple of chassis replacement questions: for dual focus tube?, for 35in tube (Sauroid)?, for TV tube?,..

[MagicianLord77]

Hi guys, I find myself in a situation where I'm missing monitor parts to complete some cabinets and bring them back to good working order. Matching of these parts is a bit of a new topic for me so I have this couple of questions:

• Konami Sauroid
  • I've got this behemoth cabinet that I would love to make work again, upon opening it, I found it has its original tube Sharp M89KRP31X 35in with a Nanao chassis I could not yet identify, the original chassis (Taxan GNN-37J) is absent. Haven't tried powering it on yet but I doubt it ever worked, do you think it would? I don't want to harm it. I haven't seen a Nanao chassis for more than 29 inches tube, that's why I think it'll be better to find a better fitting chassis, but what to look for besides the original Taxan one, does somebody know about any other brand/model that could fit the M89 (35/37 inches) tube?
• Pump it Up SD
  • This machine came with an LCD monitor I would like to replace with a proper 29in A68 monitor, and if with 31khz VGA input better. For this I got hold of some nice unused Makvision M2929D monitors, with LG M68QDY259X Dual Focus Tube, they're complete, minus the chassis . Do you know chassis models that could fit it (besides a M2929D)? for example a C2929D seems could fit good, but what about other brands? if I find a 29in chassis with 31khz support and dual focus pins then that means it would work? Other brands/models to look for?
  • Also, if a chassis has a single focus pin then it won't work, unless I bring a 2nd focus wire from the flyback if it has any?
• Other cabinets
  • I've got an old 2005 TV that came with an LG A68QCU770X 29in tube, flat I believe, I would like to have it as a spare arcade monitor. I was thinking of going with one of those chinese universal arcade chassis, but does this mean I will have to get an "arcade yoke" for it too? (TV is standard 15khz). Any recommendations about other chassis just in case?
• Time Crisis 1
  • This cabinet came in a very unfortunate situation, with just an A79GMB22X tube, w/o rings, yoke, or chassis. I'm wondering what could be my chances to find yoke/rings that fit it, and also a chassis (32in?). Could yoke/rings from another A79 monitor be compatible?

Also, about measuring yokes, I've got a MESR-100 (100khz) ESR meter, and a TC-1 "Multi-function Tester". Could they work for measuring yokes inductance? I've seen the "BSIDE ESR02 PRO" recommended for this, it looks similar to the TC-1.

Appreciate your comments!

 

[trashedcabs]

Firstly--wow, congrats on the Sauroid. Where did you find one? There have been a couple in China for sale over the past few years and I have always been tempted. They are so unique.

Those cheap multi testers can check inductance. Just put wires in two of the tester contacts, then the other side of the wires in to the yoke connector.

The chassis may not be able to generate high enough HV for that large of a tube to display a good picture, but assuming the neck socket is the same and the yoke is within range, it should at least work and not harm anything. Do you have better pictures of the chassis it came with? It looks like an MS8 from the photo.

For the Makvision dual focus tube, you can easily use a dual-focus modded Toshiba PF chassis, such as PB9929 or PD1843. I have done this and it looks good. This mod is outlined here: https://www.arcade-projects.com/threads/toshiba-tri-sync-pbxx-pdxx-pexx-notes-mods.21081/

For the LG tube, if you use one of the generic Chinese chassis it should work with a wide range of yoke specs as it is made to work with regular 27" 15khz TV yokes. If you want something a little better that should also mate up to regular TV yokes, the WG K7400 is plentiful and uses a yoke range close to most 15khz TV yokes.

For your time crisis tube... imo it might just be easier to get a complete TV and maybe RGB mod it.

Hope this helps

 

[MagicianLord77]

Thank you for your time to reply the questions!.

About the Sauroid, I got it from an arcade cabinets lot that was stored for many years in not an ideal environment (humid sometimes, rust), I'm sure the Sauroid and the rest of the lot was imported into the country 25+ years ago. Got the pedestal too. Once I can manage to power it on I could do a thread about its restoration, would love to re-chrome the pipes, restore the control panel, lots of work ahead!.

Here are some photos about the weird chassis, looks like a Nanao MS8-26 indeed. But just found out the tube is dual focus, and the chassis socket has been adapted for it
Its tube socket has been replaced with a dual focus one, it's kinda lifted, I think both focus pins are joined, I'll have to do a closer research.


When I get some time I'll inspect the chassis and try to fire it up then. I'll continue to be on the look of a legit dual focus 35in 15khz chassis too, unless this hacked Nanao proves me I don't need it

About the Makvision, the Toshiba chassis mod looks nice, seems like it would provide the best picture from the tube. I will be looking for one of those too.
And I agree with the rest