1credit
Professional
It’s ok every other game ..
Documenting Nanao ms8-33 Autosync 15/24khz.
- Thread starter Mrhide
- Start date
1credit
Professional
Really appreciate you adding this about this 33”
Not a lot of info on this
Guy in uk has a 36” nanao wide screen Mitsubishi tube .
Even less known on that one ..
1credit
Professional
Exactly ..
1credit
Professional
Mariobros3
Beginner
Following Mrhide’s kind invitation, here are some photographs and references from my Nanao MS-3620-S.
This monitor is fitted to my Sega Virtua Racing Deluxe under Sega part number 200-5240. The original tube is a Mitsubishi W86KTTZ211X.
After comparing my boards with the MS8-33 photographs in this thread, several clear family relationships appear.
1 — Power Board
The general layout is extremely close. Both boards also use transformers carrying the following references:
3 — High-voltage assembly
4 — Video daughterboard
Both video boards use a Mitsubishi M51387P and have a very similar component and RGB-output layout.
5 — Control board
I am not assuming that the boards are electrically interchangeable. Voltages, component values, tube and yoke requirements may differ, so this is a documentary comparison only.
Thank you again for documenting the MS8-33. This is the first genuinely significant technical lead I have found for the MS-3620-S in more than ten years of searching.
This monitor is fitted to my Sega Virtua Racing Deluxe under Sega part number 200-5240. The original tube is a Mitsubishi W86KTTZ211X.
After comparing my boards with the MS8-33 photographs in this thread, several clear family relationships appear.
1 — Power Board
The general layout is extremely close. Both boards also use transformers carrying the following references:
- 5F13517A1
- 5F13516A1
- 5F16518A1
- MS-3620-S: PCB-DEF 05A00515D1 / 5T00960
- MS8-33: PCB-DEF 05A00515E1 / 5T00960
3 — High-voltage assembly
- MS-3620-S: PCB-HV 05A00514D1
- MS8-33: PCB-HV 05A00514E1 / 05T00959
4 — Video daughterboard
Both video boards use a Mitsubishi M51387P and have a very similar component and RGB-output layout.
5 — Control board
- MS-3620-S: PCB-CONT 05B00752B1 / 05U02057
- MS8-33: PCB-CONT 05B00752C1 / 05U02056
I am not assuming that the boards are electrically interchangeable. Voltages, component values, tube and yoke requirements may differ, so this is a documentary comparison only.
Thank you again for documenting the MS8-33. This is the first genuinely significant technical lead I have found for the MS-3620-S in more than ten years of searching.
Attachments
Mrhide
Legendary
extremely happy that my pictures are helping someone who's been searching info for 10 years! 
and looking at your pictures, I am pretty certain it's the same boards. which means that your 36 inch screen can do 15hz!
and looking at your pictures, I am pretty certain it's the same boards. which means that your 36 inch screen can do 15hz!
Mariobros3
Beginner
Thank you Mrhide — that is very encouraging!
The purpose of all this research is ultimately to repair this monitor, which has not worked since I acquired my Virtua Racing Deluxe more than ten years ago.
The chassis has been stored separately for many years, and I have avoided powering it up without proper documentation or a safe diagnostic plan. Discovering how closely related it is to your MS8-33 is therefore a very important step for me.
The purpose of all this research is ultimately to repair this monitor, which has not worked since I acquired my Virtua Racing Deluxe more than ten years ago.
The chassis has been stored separately for many years, and I have avoided powering it up without proper documentation or a safe diagnostic plan. Discovering how closely related it is to your MS8-33 is therefore a very important step for me.