I have this problem too. I looked around online and I think it may be an issue with the Super SteadyShot system becoming misaligned. I’ve thought about taking it into a repair shop to take a look at it but the camera is so outdated, I’m not even sure it’ll be worth it. Hopefully this’ll give you something to work off of. If you find any more info let me know!
Had a lot of trouble getting the power cable out. Would definitly recomend this.
I'd recommend using the pliers.
Adhesive under the left cable made it hard for me to remove it. The right one came out very easy.
I helped me to use the pliers both to get underneath the canble lock and then push on the wings of the cable.
It helped me to push the IO board further into the casing and then lifting.