And told me I could try repair it myself. Thanks. Not.
So instead I'm going to pull it open and see if I can sort it out.
Here is now some logic what I can not understand.
You did not want do it using Siglent help but after then you want do it just with your own?
I am guite sure if Siglent told you can also try repair it yourself, naturally after then they may also give some helpful instructions for it, perhaps perhaps even more...
Least I have been in this situation (exept that reason for failure was unknown but propably ESD to input connector) with other SA model and I get all needed instructions for diagnose and also for repair, they sent even needed components (rf switch and some pin diodes).