RE:
since I added ferrite cores and used a different power cable it did not happen again (even on high refresh rate). Fingers crossed.
That sounds promising. Which power cable are you referring to? The display has the ribbon cable which combines power + serial data, plus a ground strap. Did you replace the entire ribbon cable and its connectors? Also, what type of ferrite did you use, and how many passes of the cable through the ribbon? -- Many thanks!
The pinout used on the ribbon cable looks pretty fishy to me, by the way. The fast SPI serial data and clock lines (MOSI, MISO, SCK) are right next to each other, without any shielding. With so many spare wires on the ribbon cable, why didn't the designer interleave these data lines with GND lines?!
This seems like a similar design blunder as what happened with the Love Board on the print head, where heater current and sensitive signals apparently share the same GND return path. Same electronics engineer? 🙄
The connector (50 pin fpc)in the image you posted, is for the flat flex cable that is directly attached to the LCD. The pinout is determined by the manufacturer, not by Prusa.
RE: Core One screen flickering / black screen
The connector (50 pin fpc)in the image you posted, is for the flat flex cable that is directly attached to the LCD. The pinout is determined by the manufacturer, not by Prusa.
Oops -- you are right, I was looking at the wrong connector. The ribbon cable actually uses differential signals for the SPI lines; that's better.
RE: Core One screen flickering / black screen
I have the same problem. Does it have any REAL solution?
I started with 6.3.2 firmware it did that
Then the USB updated to 6.3.3
Currently I'm on the 6.3.4
And the problem still persist. What now?