Lemon, could you try the shield case without the buttons board inside?
I do it tomorrow.
I see that we have the same main button board version, some minor routing differences at the side with the bnc face of mainboard, I don't see any differences to trimmers there.
The main differences about our versions are to the other side with the most IC's, some different IC's companies, you have more trimmers but for my opinion is normal not because you haven't different version but because yours mainboard is for 8102 with 2GSa/s and mine if for 7102 with 1GSa/s.
Thanks rf-loop for the datasheet of Chrontel but I can't to find answer to my question there. I see the capture of Carrington that his Crontel has clear all the legs and I am thinking what is going to mine.
Is it different configuration that must joined some legs or it is bad production? I took one macro photo of this IC, see at attachment photos.
I am thinking to send them to Owon for their respond about this.
I am a little nervous about this, because at this area around there are two bad soldering components, the one is capacitor that we said (it isn't damaged, only very bad soldering) and the other resistor very closer to the IC.
If you see with more attention at the macro capture photos, the joined legs have the same "ground planes" under. If there are common paths, why they applied extra joined with soldering? Weren't enough the common paths?
Of course from datasheet the main purpose of this IC is to encoder the signal to vga output. I don't see any problem with the external TFT monitor.