From the GPIO solder holes to the test pad Start, you don't mess with voltages unless you want to ruin things further. Point taken. I actually got it running in the final hours of the night. Added a ground to the start button and it literally solved all my problems, it works great now! I want to sa...

Assuming you haven't bridged some neighboring pins, one option you have is to attach a thin wire from the GPIO pinhole that you can't get good continuity on to the test pad for the corresponding button. Just gave that a shot for the second time. No go BUT! I tested for continuity with the pi runnin...

Assuming you haven't bridged some neighboring pins, one option you have is to attach a thin wire from the GPIO pinhole that you can't get good continuity on to the test pad for the corresponding button. Just gave that a shot for the second time. No go BUT! I tested for continuity with the pi runnin...

Also, just swapped start buttons from my other board, no go. Thinking I bridged a pin possibly, considering the only thing I did to go from having a working to not working start button was re-flow the connectors. Attempted to fix this but does not seem to be working.

Check the button for continuity, basically the left or right 2 pads then pres the button. If there is continuity then reflow the pads or solder a wire to the test pad on the bottom if there isn't continuity then you have a bad button and I can send you one to replace it. So checked the pads, multim...

OKAY! So this thing is finally going! initial problem was that when the power was on with the black screen, I would get 2.55v. if I pushed the start button, for some odd reason I would get the white screen and everything would jump to 3.5v. After much greif and testing, I decided to jump back to squ...

5V GPIO (it's on the silk screen) has continuity to the Power Input VCC? does the 3.3V GPIO have continuity to the VCC under the 8pin connector? does that VCC under the 8pin have continuity to the VCC pad on the LCD board? Finally what is the voltage at on the VCC and GND pads on the lcd board? Yes...

Helder wrote: ↑

Fri Aug 04, 2017 4:09 pm

Sounds like you don't have a solid connection on the 5V GPIO if it's not being powered on by the battery, is the battery also fully charged?

Battery is fully charged,

5v is showing continuity on nearly all of the test pads on the controller pcb.

Hmmm... If it works fine via battery over hdmi, but the additional load of the screen is preventing the pi from booting then there must be a drain or a short somewhere. Did you see this post that Helder put on? Wondering it that could be an issue? http://www.sudomod.com/forum/viewtopic.php?f=34&t=3...

Do you have a multimeter? Check that the connection between the battery and the charge board is giving out around 4 volts, and do the same on the two cables coming from the charge board. It's hard to see, (as it's covered in glue?) but if you don't get a good battery to charge board connection, you...