Thank you very much. I'll open it and have a look tomorrow, when I have proper tools to do it. I'll let you know.
Btw, how do you scrape it? By knife or screwdriver?
I collected some information and according to that;
*It does not matter if you have black or silver xd-05. At first I thought that black xd-05 must not affected from this issue because I thought that factory already know that black painted metal is not conductive so that they scraped black main body regardless of color. And they thought that silver back and front is not painted so they must be conductive. However; they are not (anodized?).
I honestly do not know why they only scraped the main body and not black back and front in black xd-05. [According to Hansolo, I can say that some or all black xd-05's ground is set up correctly. Read his comment:
I don't have any pictures of that from when I upgraded to my Burson V5i. I can say that all the areas where the pins would make contact to the outer housing, in my black XD-05, the anodizing had been scraped off for a better contact point. I noticed it on the
front plate,
back plate, and center housing piece.
I hope that helps. ]
This is the main point. We are doing a thing that xduoo factory supposed to do.
*2 of 3 grounds are not set up. Only charging ground is set up properly. You can scrape too it if you want but I don't think it will change any thing. But you can take it too just to use as an example for scraping.
*I just scraped with a screwdriver. There are a few things that you need to take care:
*The perfect scraping is *not scraping* but drilling. You can put a dome-shaped hole for the golden pin. Notice that it does not matter how much you scraped the area; the whole part except surface is conductive. Scraping like a rectangle or a planar way may lead to unwanted situations (Parts should not connect electrically! Refer to 3 below)
*If you use a screwdriver ; hold it like you hold a pencil. You do not want to break the glass at front panel.
*Put the inside(pcb) away. You only need back and front panel and if you want, the main case.
*When you are done,
1) You can test it with a multimeter. And with the method I described at previous post if you want to use your ear not a multimeter.
2) You need to carefully clean the surrounded area. There will be a lot of metal particles and if they get into the main board; you may end up with a short cut xd-05
3) Double check that you did not mistakenly scratch front; back and main cases connected areas. If they are scratched mutually cut small pieces of electric tape and put it to affected area.