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ArcadeMachinist

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I would be posting some pictures of my current restoration project.
SEGA G-Loc Deluxe flight simulator - R360's smaller brother.

Got this machine with completly dead lower part, looks like sometime ago it was stored outside (rust and corrosion) and it was home for a rat family too (major parts of wiring eaten away).

As of now it is playable, but no motion.
One of it's two motor driver boards needs new (custom) transformer.
Also some cosmetics, like seat plastic (fibegass now) needs more sanding and paint.

It was taken apart completly for restoration (and to fit my door).

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AMS

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Damn you don’t see these often! Verry nice

Keep up the good work . Can’t wait to see it al finished :thumbsup:
 

ArcadeMachinist

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Joysticks and new lights:

Main joystick missile button (square orange) was replaced with a slightly bigger one, which looks exactly as original, just few mm bigger.
Original is still produced and available from the manufacturer, but only in Japan and was never exported, except in SEGA button replacement kits.

Pinion gear is from the throttle joystick assembly.
Had to repurpose RC helicopter part to match SEGA 601-5410, as it is not currently available.
For future reference:
Throttle gear is: M0.6, T15, 6mm shaft.
Replacement orange button: UB15KKW015D-DD


joystick1.jpgjoystick2.jpgjoystick3.jpg2021-01-05 23.43.03.jpgbacklight1.jpg009.jpg
 
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ArcadeMachinist

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Now the main trouble (common for this machine) is: dead motor driver boards, and glitching motor control logic PCB, as turned out later.
There are very detailed diagnostics and repair instructions for these boards available on french GameOver forum.
I was able to fix one of the driver boards and the logic board by swapping dead parts with brand new ones.
Second driver board is still dead, because it needs new L2 transformer, which was custom made for SEGA.
Thanks to fellow arcade enthusiast from Denmark these were also analyzed and reproduced.

Now just waiting for one to arrive.

Motor board has a voltage multiplier circuit and drives it's motor with PWM pulses, with ~335 volts, if it is 100% duty (normally it is never doing anything close to that).
When logic board was glitching it actually was sending 100% to the motor driver board and the cabin was trying to fly away from the base.


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ArcadeMachinist

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As of today - it needs the seat to be completed and motor driver board issue fixed.
May be CRT should be looked into as well. When the cabin moves (it does on 1 motor during startup check sequence) - the image really jumps across the screen.
Not sure if it is something mechanical with the tube/yoke/connections or interference from the motor circuits.

If I run several motion tests in a row - monitor would be showing weird picture like on the 4th photo.
After sometime it would go back to normal by itself. Any ideas? :)
 

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nem

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Wow, very nice work, @ArcadeMachinist. I can't see there being many of these left. Kudos to you.

May be CRT should be looked into as well. When the cabin moves (it does on 1 motor during startup check sequence) - the image really jumps across the screen.

Likely cracked solder joints. These moving cabs are hard on the monitors.
 

Murray

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This is the kind of project cab I would see at an auction somewhere and it sells for cheap, and i buy it, then i get it home and open up to see this. Then i think to myself... what have i done.....

2021-01-05-23-25-15-jpg.jpg


Awesome job, really good work to get it back to where it is now!
 

Mrhide

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This is a full project that is so rewarding because you touch so many aspects !! Congratulations!!
that bottom full of boards is beautifull !! 8| Very similar to a full size PowerDrift I saw in november... and left there!
 

ArcadeMachinist

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Just a small update how it is going.

Still need to fix one motorboard.
May be someone can tell me why, when connected to MAINS, there is 0v after R21b, when it should be normally 3v.
Before R21a = 337v
Between R21a and R21b = 168v
After R21b = 0v (normal working board has 3v here).

Image shows different voltages, when R21b is removed and 3v lab PSU is connected instead.
I have replaced all zeners, resistors, Q1
Q2 is not replaced, but transistor tester shows it is fine.
If I remove R22 - then 3v is back after R21b.
 

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8bitBox

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Where you able to get it all restored and back together! Thats some serious work going there.
 
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