Hi Builders,

I have a issue of arm function as below.

The first wake up was success.
He sat using his arm, after that his arms not working.
I tested all functions using test program again, all functions were working well except both arms.

I did reassemble all arm servo motors and reconnected cables. It worked again.
But after using his arms to sit and stand up, two arms are stop working now.
He danced and push-ups, all functions were fine.

I tested it to figure out problem at this time as below.

1. Change the test SD card to test all functions. Both arms are not working. Other functions are perfect.
2. Disconnected the left arm connector from main board. Right arm are working again. Other functions are working good.
3. Disconnected right arm connector and connected left arm connector from main board. Both arms are not working. Other functions are working well.

It seems not cable problem. One arm is working by test program.
Main board problem?
Do I need to disassemble arms and reconnect cable again?

Do you have any thoughts about this problem.
Please advise me to fix my Robi.

Thank you.

Peter

Hi Andy,

Thank you for quick response.

Do I need to rewire both shoulders or just left shoulder one?
As I mentioned right arm is working without left arm connecting.

Actually, this is second time happening.

Thank you.

Peter