Hi guys, I have problems with a canon 70D PCB that initial was dead and now I made it to make it work partially but I don't know how to take any future actions. Since as you know, it is quite impossible to do these kind of repairs without schematics unless you're quite good at it, witch is not my case 
So now the camera powers up and the top lcd works with all the info, some buttons near top lcd are working as well but no main menu and no taking pictures. I found that the SOT-23-5 (5 pin power converter transistor?) was fried, unfortunately there's only a letter and a number on it so I don't know what exactly the characteristics are. It says H4 and is mounted near the f74966a chip. I manage to find a similar one but with a H3 on it on a canon 5D II motherboard. I don't know if the partial working problem comes from this or there is something else to do.
Any thoughts?
Thanks in advance!
So now the camera powers up and the top lcd works with all the info, some buttons near top lcd are working as well but no main menu and no taking pictures. I found that the SOT-23-5 (5 pin power converter transistor?) was fried, unfortunately there's only a letter and a number on it so I don't know what exactly the characteristics are. It says H4 and is mounted near the f74966a chip. I manage to find a similar one but with a H3 on it on a canon 5D II motherboard. I don't know if the partial working problem comes from this or there is something else to do.
Any thoughts?
Thanks in advance!