Excuse me for my English.
Entschuldigen sie for meine English.
I found this excellent forum by gooogling.
I will try to make a German translation if time. (my German is very bad, but I can read it)
Meine Deutch is sehr slecht, lesen ist Ok, aber schreiben is sehr schwierig.
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I have two Chinese grid tie inverters. But the are not of the more familiar "Power Jack" or "Sun".
However I would really like to reverse engineer the microcontroller program.
The manufacturer is "Kai Deng"
They have the annoying bug that they need a rather large solar input (15W) in order to "power lock" stable.
I believe the current "step" is too big in the microcontroller.
Can you help me finding the microcontroller name?
It's name is sanded off
![Traurig :(](./images/smilies/icon_e_sad.gif)
I already found the other chip myself.
To the left it seems a connector for programming, just like the power jack/sun gti
![Bild](http://users.fulladsl.be/~spb27160/gti/GTI300W-Control-unit-002.jpg)
![Bild](http://users.fulladsl.be/~spb27160/gti/GTI300W-Control-unit-001%20%28Small%29.jpg)
I also upgraded the input capacitors to 2x10.000µF