Hi everyone,
I'm working on this Game Boy Micro. Someone else did a terrible job removing the old charging port and replacing it with a USB c port. That person basically removed all traces/via's.
Obviously it did not charge in this state:
So i worked on it to replace the port and fix broken traces and at least get the +5v and ground working. Leaving the datalines.
My result:
A lot cleaner and +5v and ground are connected now.
But it is still not charging when I have the battery and charger connected.
The GBM works great with a charged battery, so the device itself is working. It's just the charging circuit somewhere.
Looking at this post (https://gbatemp.net/threads/game-bo...-think-its-the-diode-looking-for-help.644385/) I measured voltage with a battery and charger plugged in.
My results:
Around Q3 (transistor?) I have an "output" of 0.02v (point 7) on inputs both 4.98v (point 8 and 9). And that is different from the pictures in the other post.
So maybe Q3 is faulty? Or mij "input" on point 9 is faulty so maybe resistor R16 (connecting 8 and 9) is faulty?
Too bad I don't have a second GBM to compare to.
Does anyone have any idea what is wrong with this device?
Do I need the measure something else?
Is there maybe another problem with the connection port that I'm not aware of?
Any help is very much appreciated.
Thanks!
I'm working on this Game Boy Micro. Someone else did a terrible job removing the old charging port and replacing it with a USB c port. That person basically removed all traces/via's.
Obviously it did not charge in this state:
So i worked on it to replace the port and fix broken traces and at least get the +5v and ground working. Leaving the datalines.
My result:
A lot cleaner and +5v and ground are connected now.
But it is still not charging when I have the battery and charger connected.
The GBM works great with a charged battery, so the device itself is working. It's just the charging circuit somewhere.
Looking at this post (https://gbatemp.net/threads/game-bo...-think-its-the-diode-looking-for-help.644385/) I measured voltage with a battery and charger plugged in.
My results:
Around Q3 (transistor?) I have an "output" of 0.02v (point 7) on inputs both 4.98v (point 8 and 9). And that is different from the pictures in the other post.
So maybe Q3 is faulty? Or mij "input" on point 9 is faulty so maybe resistor R16 (connecting 8 and 9) is faulty?
Too bad I don't have a second GBM to compare to.
Does anyone have any idea what is wrong with this device?
Do I need the measure something else?
Is there maybe another problem with the connection port that I'm not aware of?
Any help is very much appreciated.
Thanks!
