Pi won’t turn on?

[Jdrkangl2]

I’m having a problem where the pi works fine up until I wire the power cord for the screen. This happened suddenly when it has been working well for weeks now. It wouldnt turn on at all so I tried disconnecting things one by one and the only thing that fixed it was to un-wire the screen....any idea why this would suddenly happen.

Also I have tried powering from a wall adapter (official) and by battery.

[Thump52]

Can you post pics of your wiring

[Jdrkangl2]

I stripped it to just the screen and the pi so I could try with the ac adapter (same results with battery) the red wire os the power one and I circled where I have tried soldering it and neither work. Also again this was all a functioning gbz up until yesterday

[VeteranGamer]

your soldering could do with a bit of a clean up....

but i would NOT try to power the screen from the Pi Zero.....
power it up on its own....

using one of these (if possible)
https://oshpark.com/shared_projects/tQqjx16m



also how have you got the screen wired/soldered up...




.

[Jdrkangl2]

Oh sry I should have mentioned, I just striped everything to isolate this. I had the screen and the pi soldered to helders retro psu. The exact same problem occurred, everything was fine until I soldered the screen on to the psu

[Helder]

If you hook the pi up to an HDMI connection does it work? If yes then you have a GND short on the LCD board. Look for any stray solder balls or bridging, also show us a picture of your LCD board wiring.

[Jdrkangl2]

Actually I figured it out, the screen was just messed up, I wired it to another identical screen and it works perfectly. Thanks for the help tho everybody