The modes on the panel flash continuously. ⇐ Candy

[Alexsei]

Candy machine cdcp6. 3 years of operation. When turned on, the panel displays the status of the creeping line. All modes flash in turn (red lights) - like a creeping line. and so on all the time. It’s like the regime can’t stop. and nothing else happens. There are no leaks or blockages. upon inspection and some analysis everything is normal. After assembly, nothing changes.
Please advise me in what direction to proceed. Either yourself or the situation calls for calling a specialist.
Thanks for watching.

[Fulcrum]

Candy cdcp6

It is possible that there is something wrong with the control board, it could very likely just be oxidation of both the contacts on the connectors and the entire board, there could be poor contact of the buttons. ... In general, you first need to get to the board, remove it, check the condition, check the contacts of the connectors and cables on the board, clean the entire board with a special contact cleaner together with a brush...