Laird_Dave Posted July 21, 2011 Share Posted July 21, 2011 Hi everyone, I just found my way down to this dungeon ;-) I searched the web before but I was not able to find anything of help to my problem. It would be great, if anyone of you could send me a .pdf of the wiring scheme of the "La Fonera+", iirc that is a Fon2200 Router. If you do not have any, I would totally appreciate, if you could tell me what the element marked as "U907" on the circuit board is. The reason for all this is, that I built my own battery pack for my fonera and accidentally switched the polarity. Because the manufacturer is a cheapskate he did not use a normal fuse or anything like that but a simple resistance. This killed the component mentioned above quite profoundly (I can send you pics if you want to ;-)). Anyway, thank you very very much for the time you spent on reading this post! Quote Link to comment Share on other sites More sharing options...
Mr-Protocol Posted July 21, 2011 Share Posted July 21, 2011 Be nice if you could describe maybe what you think it is. How many pins or something. Use Google-Fu FCCID may help as well... Quote Link to comment Share on other sites More sharing options...
Emeryth Posted July 21, 2011 Share Posted July 21, 2011 It's the voltage regulator. High res pictures of the board: http://www.dearhoney.idv.tw/gallery/displayimage.php?album=4&pos=1 Unfortunately the marking "7d545 1412d" does not come up with any datasheets. If you are lucky, and it's the only thing that was damaged, you can bypass the regulator entirely - find/build a 3,3V (exactly 3,3V!) power supply and apply the voltage directly to the pins near the serial port (double check the polarity this time :P). Quote Link to comment Share on other sites More sharing options...
Laird_Dave Posted July 22, 2011 Author Share Posted July 22, 2011 Hi Mr-Protocol, thanks for your time. As I mentioned before, I was not able to find anything of help, maybe I didn't search for the right keywords. I'll try again with the FCCID you mentioned. Hi Emeryth, Thanks, I will take this info to my "tech support" guy ;-) He knows better than me about hardware stuff.... And yes, if I toy around anymore with this I will be careful. This a experience you make exactly two times if you're clever. The first and the last time ;-) Cheers Dave Quote Link to comment Share on other sites More sharing options...
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