the paint is custom (and it held surprisingly well)
missing lines (particularly vertical) are a known common failure for the Game Boy
*now it's dead (and the retro fashion makes these old consoles quite expensive, even just for spare parts)
you can find the tracks at https://www.zophar.net/music/gameboy-gbs/kirbys-dream-land-2
the octopus is the "workforce", responsible for building things
the efforts put in the details to not get into troubles with Nintendo is quite impressive
the backlight in the bottom corners is not ideal, but still ok
re-inserting the cartridge was probably what improved the contacts, not blowing on them :)
the rat in the back is the "professor", responsible for the theory
this restarts the game without removing power
re-writable memory was limited in size and expensive
it is called 3.8 mm GameBit
*what I did is
it is actually run on the processor in the Game Boy
*measure the voltage of the battery
milli-Volts
soldering worked on other coin cells though
if done quick, it's ok
the orange polyimide piece prevents shorts on the border
the polarity is switched here
the volume is low because the loud sparks mess with the auto-gain
e.g. to bypass AC to ground
actually they are not visible on the camera
Farad is a unit for capacitance, not energy
in the back you can see its resistance
it was over 100 A (O.L. = Over Limit)
actually the third LED (blue) tells that the battery is charged
when the first LED is off, we are in constant voltage mode
the third = the one in the middle
*battery OK LED
tip: cut a slice on the battery end to be sure the current goes "through" both spots of the strip
don't leave it for too long
or the high energy will disintegrate the metal
getting good results needs some practice
under 10 USD
it was released in 1999
when catching all of them was still fun