MS2930/31/33 chassis paired with a Toshiba A68KZN696X tube. This is the stock monitor in Blast City and Net City cabinets. Here's the gist:
Monitor develops a fault, chassis is removed, chassis is repaired, chassis is put back on tube, tube is dead.
Here's two posts from the last month and one more that's a few years older:
Sanwa 29E31S Chassis and Yoke on a Nanao MS2930 Tube
https://forum.arcadeotaku.com/viewtopic.php?p=511870#p511870
https://forum.arcadeotaku.com/viewtopic.php?p=463658#p463658
I've had a variation of this happen to myself as well. Here's my story:
The end result in all four cases is the same. See the video in the first AO post.
@nnap has confirmed that high voltage arcing from a faulty chassis can fracture the tube rendering the tube useless. Please see his post (#7) below.
Something to keep in mind if you ever try untested chassis.
EDIT: edited the thread for updated info. I initially suspected it was the neck connector breaking loose. It's not. It's high voltage that arcs from inside the tube to the deflection yoke. Crazy stuff!
Monitor develops a fault, chassis is removed, chassis is repaired, chassis is put back on tube, tube is dead.
Here's two posts from the last month and one more that's a few years older:
Sanwa 29E31S Chassis and Yoke on a Nanao MS2930 Tube
https://forum.arcadeotaku.com/viewtopic.php?p=511870#p511870
https://forum.arcadeotaku.com/viewtopic.php?p=463658#p463658
I've had a variation of this happen to myself as well. Here's my story:
I had a perfectly working, nice looking MS2933. I bought a replacement MS2930 chassis from Yaton. I thought I might as well test the thing. I connected the chassis to the tube, double checked everything, turned it on and saw a spark near the yoke, inside the tube. Turned it off instantly. Didn't think much of it, thought that the chassis is faulty. Connected the original working chassis back, turned it on, and surprise, no picture. There's some sparking in the neck. Connected the tube to a B+K CRT analyzer. Analyzer gives absolutely zero readings on the guns.
The end result in all four cases is the same. See the video in the first AO post.
@nnap has confirmed that high voltage arcing from a faulty chassis can fracture the tube rendering the tube useless. Please see his post (#7) below.
Something to keep in mind if you ever try untested chassis.
EDIT: edited the thread for updated info. I initially suspected it was the neck connector breaking loose. It's not. It's high voltage that arcs from inside the tube to the deflection yoke. Crazy stuff!
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