I have a Nanao MS8-26 which is jittering, shaking horizontaly. More noticible on a grid then in game. In game it looks more wavy. Chassis had been full recaped some years ago. i did a capkit as well with more quality caps, except the big filter and two values i didn't had. Does someone know what can cause this issue? Don't have a stepdown transformer in the cab and the pods for hold or phase do nothing.
Nanao MS8-26 jitters
- Thread starter LSVegas
- Start date
ner38073
Enthusiast
I would do a reflow on all the neckboard and pretty much on the entire chassis. Try this before attempting to replace other components. That is not cap related.
JohnRambo'sKnife
Champion
I would check the anode cap. Make sure the connection is good and the vacuum cap has a bit of dielectric on it. You can try repositioning the anode connection a little by rotating the cup slightly. This seemed to solve the issue on a couple monitors I have here doing something similar after verifying that the chassis itself was not the cause.
Obviously, following all the standard rules for touching the anode. Only do it when the monitor is off and be sure to discharge it beforehand.
Obviously, following all the standard rules for touching the anode. Only do it when the monitor is off and be sure to discharge it beforehand.
RepairGuy95
Champion
The big cap is typically a filter cap.
At this stage I would assume it might need replacing though it might not solve the issue.
Arcadespareparts&repair typically carries obscure/large caps/bipolar caps.
At this stage I would assume it might need replacing though it might not solve the issue.
Arcadespareparts&repair typically carries obscure/large caps/bipolar caps.
ner38073
Enthusiast
After many recaps on chassis, I lost the belief of the cap kit. Unless a cap phisically looks damaged (leaked or bulged) I always leave them alone. Inspect the RGB transistors on neck board. Broken traces or cold traces might be the issue.
RepairGuy95
Champion
After 30+ years if I am pulling them to measure it they are cheap enough to replace imho, and they do dry out & change value.
I understand not everyone does this, but for personal projects then it will be good for my usage/lifetime if I use premium branded caps.
I strongly caution against using cheap brand capacitors, unless one likes recapping often.
I understand not everyone does this, but for personal projects then it will be good for my usage/lifetime if I use premium branded caps.
I strongly caution against using cheap brand capacitors, unless one likes recapping often.
Don't rely on physical damage as the only indicator of bad caps. Caps can go bad and still not bulge or leak.
PsychicJoTron
Beginner
I'd be curious to see a video of the jitter? I know that disconnected or poor quality ground can cause something that I'd describe similarly to this(unfortunately, I do NOT have a video showing what I mean).
Can’t supply a video. The image is shaking optically. If you look close, the right pixel (seems like a blue pixel) of a line is flashing on and off, creating this effect. So I thought about something in the blue circuit maybe causing this. It’s grounded correctly, but will check this out as well.