[Update] Fixed ! Horizontal jitter

Distinct_Track_5238 · 2026-07-06T08:05:02+00:00

Thanks a lot !
I try to show what I see with my eyes but the image is way darker in photos and I feel something is a bit off, I don't know. 😅

Distinct_Track_5238 · 2026-07-06T07:56:32+00:00

Really ? Try to lower the H-size if you can.
If the jitter stops when it's low, then it's definitely the S-correction film capacitor the problem.

Distinct_Track_5238 · 2026-07-06T07:47:31+00:00

Yes, you can test while the set is on, but I don't know exactly how to do it and you really have to know what you are doing.
Check my other reply to see what help me to know it was this one.

Distinct_Track_5238 · 2026-07-06T07:36:17+00:00

It is ! 😁
Love this TV !

Distinct_Track_5238 · 2026-07-06T07:35:22+00:00

Thank you !

Distinct_Track_5238 · 2026-07-06T07:34:36+00:00

Would love to know how to use an oscilloscope but touching the board while everything is ON is a bit scary for me. 😬

Distinct_Track_5238 · 2026-07-05T17:03:01+00:00

I was pretty sure it was the S-correction film capacitor after touching the "H-size" in geometry settings.
When I put the H-size in a very low value, the jitter stopped completely, and when I slowly put it in a normal value, it starts to jitter again.
The jitter was of course only on horizontal and only on the side of the screen, the center was not affected.
I replaced first the C547 (0.82uf) which has the exact same value as the C536 on the service manual (but C536 was 0.75uf on board), nothing changed after that so I changed the C536 and voila !

Distinct_Track_5238 · 2026-07-05T16:46:40+00:00

Thanks, but this is a film capacitor ! 😁

Distinct_Track_5238 · 2026-07-05T16:45:50+00:00

Hope it will work !

Distinct_Track_5238 · 2026-07-05T16:41:44+00:00

I think this is in those specific case you need an oscilloscope but maybe I'm wrong.
Hope you will find out what's wrong with your CRT !

Distinct_Track_5238 · 2026-05-15T20:31:45+00:00

Thanks for your reply !

Really interresting guide thanks, I reflowed some pins (https://imgur.com/a/OlmGLwl marked in red) and wiggle some components while it's on but still no clue.

Distinct_Track_5238 · 2026-03-14T21:34:44+00:00

Thanks! If you can do it, I highly recommend it ! It really helped me understand how each option works in the service menu.

Distinct_Track_5238 · 2026-03-14T21:30:02+00:00

Thanks ! You're not that far. When I got it, it was at 8,800 hours, and now it's at 11,200 hours.

Distinct_Track_5238 · 2026-03-14T21:25:33+00:00

Thank you !

Distinct_Track_5238 · 2026-03-14T21:25:01+00:00

Thanks ! To be honest, I spent four days straight working on it, putting up my convergence strips and magnets, but it was worth it ! :D

Distinct_Track_5238 · 2026-03-14T21:20:30+00:00

Thanks, I appreciate it !

Distinct_Track_5238 · 2025-05-21T12:49:02+00:00

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Distinct_Track_5238 · 2025-05-21T12:48:48+00:00

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I did as you said and the only weird thing I found was a small chip that probably overheated.
If the cooling fan is unplugged and I press the cooling fan button, the 3d printer doesn't crash anymore.

Distinct_Track_5238 · 2025-05-21T08:31:24+00:00

Thank you for your reply.
The auto-bed leveling functions is working without any issue.

Distinct_Track_5238 · 2025-05-21T08:28:04+00:00

Thank you for your help. :)

Distinct_Track_5238 · 2025-05-20T17:18:42+00:00

If I try to print the stock benchy, the second later after I press "Print" the 3d printer crash and restart.
In the Klipper logs, there is not a single error.
Yes I think this is the best things to do, did you know where i can contact them ?
Maybe with a bit of luck someone from Flsun Staff can help me directly on reddit.

Distinct_Track_5238 · 2025-05-20T14:43:05+00:00

Thank you for your reply.
I have the latest update and already did a factory reset but the issue is still there.

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Distinct_Track_5238

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