Posts by KeeChoon

OK problem solved! It is really the bridge at the positive pad of C5. The little unit is working fine now. Sounds great too!   Thanks all for the help!

Quote: Originally Posted by cobaltmute  If that stuff connecting the + pad of C5 to ground plane is not just solder on top, then yes, you have a board with a manufacturing defect.  This does happen on...

Quote: Originally Posted by cobaltmute  It could be a problem with the board or a passive component.   Remove C3, C5, LED, R5, C7.  Measure the resistance between 5V and 0V. ...

Quote: Originally Posted by jdkJake  Well, that leaves c8, c14 and c15 as the only parts on that side of l3 you did not resoldier. Might be worth removing and remounting those parts and then...

Resistance between 3v3 and 0v keeps climbing when measured, starts off at around a few K ohms. Is this normal?

Ok, have did all the test.   Removing L1 sees 5V to at the input pads. Reinstalling L1 and removing L3 shuts the board down.   Have also removed and reinstalled C5 and C7, no luck. Removing the LED and R5 also...

Quote: Originally Posted by cobaltmute  Taking another look now, it looks like there is some crud under the mini-USB joints.  Make sure that part of the board is totally clean.   Remove L3 -...

Ok, will go thru those tomorrow.   No problems for the cable itself as prior wiring it onto the board, its supplying 5v w/o problems.   So basically I will be looking at components from L1 to the point the 5V enters...

Have desoldered the connector off the board, wired the USB cable directly to the board, clean up the solder at the crystal and reinstalled C7. Had also checked other components for bridges.   Still no luck, no voltage at 5V,...

Plugging it into my work PC running on Windows XP gives this error message, 'A USB device has exceeded the power limits of its hub port.' The port is shutdown after that and had to be reset to reactivate it.   Have...