I found a fingerlings fake finger monkey (no markings on the back). There was no tutorial to fix him up or see the insides with the circuit board so I felt obliged (joking) to repair his blink and share with you.
Here are pictures of getting inside: the wires for the speakers on the backplate and the wires to the neck motor are very easy to accidentally rip out as they are so short. I accidentally ripped out the speakers and had to resolder them back on. The tilt sensor is those two white cylinders with a yellow dot and print on them.
This is the magnetic coil that controls the blinking, I removed all the screws while leaving everything loosely together to get to the pink coil, gently pried a metal thread off the side and the middle and used tweezers to thread it back through the monkey leaving two micro "antennae" to solder onto the + and - upper right side of the circuit board.
Here's the circuit board:
K4 and K5 are the copper touch sensors on the front plate at the top of his head. SPK are the speakers in the backplate (black left, red right). MIC is the microphone in the front plate mouth area. BAT is the battery. MT is the motor in the white piece of machinery. Above that is a simple plus and minus: you solder the magnetic coil wires into those then use tweezers to tuck those wires away (speakers and coil wires are not soldered in this photo, I also haven't melted the on/off switch yet LOL)
I know it's late but maybe like Furby, they'll get a nostalgia renaissance & someone out there could use the tutorial.
The Fingerling responds to single noises (clap or kiss sound) via the microphone, to touch by moving a finger across the forehead front to back on either side of the hair tuft, both fingers held then slid makes it fart. The tilt sensor can sense if the toy is upside down (play noise whee), upright or lying horizontal (sleep snores). This version has no light sensors, no other touch sensors or voice replay. The official Wowwee fingerlings do not have a marked circuit board but follow pretty much the same order: https://youtu.be/RIAVKKzOocc (uuugh I wish i'd found this earlier)