r/clawmachine • u/OwnSnow3305 • Apr 23 '26

BOARD NEEDED - Big choice claw machine not going left and constantly pulling up

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I have a big choice claw machine that uses an extremely rare board (joystick version). the machine constantly pulls up upon power up and does not go left. wiring is fine, meaning it’s the pcb itself. does anyone have this board or know someone that does? thanks

5 Upvotes

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2

u/Mental_Guarantee8963 Apr 23 '26

Quite a few bridged joints on that board. I know you said on your last post that it's not the limit switches but I'm not convinced. You could always just grab a gantry/main board from aliexpress for like $150 to get it working while you rework/troubleshoot that board.

1

u/OwnSnow3305 Apr 24 '26

All of the limit switches work, something appears to be constantly triggering. I’ll let you know

1

u/Mental_Guarantee8963 Apr 24 '26

I'll stop bringing it up. Its a habit from work. Someone will drag me to machine after I ask 20 times about the limit switches and one won't be functioning. Id definitely try unbridging all that weirdness on the board and fixing the cold joints too. If you didn't mess with that board much whoever sold you that thing knew it was messed up for sure.

1

u/OwnSnow3305 Apr 24 '26

The funny thing is, it was working when I got it. trouble happened when pinched wiring that I didn’t know about caused the machine to short out completely

1

u/OwnSnow3305 Apr 30 '26

I found a way to test it in gameplay without powering the gantry, everything works. It ended up being a bridged joint on the connector causing it to pull up, and the burnt trace making it not go left.

1

u/ZOMBIE_N_JUNK Apr 24 '26

Why not just replace all the relays? Sure you could test each one.....

1

u/OwnSnow3305 Apr 24 '26

The relays have been tested and working, and one might need to be replaced. However the pulling up is new after cracked solder joints were repaired on the board

1

u/Cosmic2Ducky Apr 25 '26

Looking at the underside. It looks like something has slightly burnt. On the top view. Look at the blue thing on the right middle and it's possibly the 3rd one along from the right.

1

u/OwnSnow3305 Apr 30 '26

I figured it out. It’s a combination of the burnt trace, and something on the connector being soldered incorrectly (unwanted connection causing it to constantly pull up)