Max Mod N64

My process and things I learned doing the maximum number and types of mods on an N64 Console.

NOTE: The N64 was made when Lead solder was the standard for all manufactured electronics. Even if the new solder you add is ROHS, the original solder is not.

Mods and their planned order:

  1. RGB MOD
  2. Replace Capacitors in Power supply
  3. RAM Upgrade 8 - 12 MB
    1. Depending on Jumper/Expansion PAK
  4. Heat Sinks (replace 'heat spreader')
  5. Replace Capacitors on Motherboard
  6. Gamecube Controller Port - Maybe
  7. Power LED RGB Color
  8. HDMI ??
  9. Overclocking
  10. JTAG ??

Additional Mods (Non-console)

  1. Game PAK mod (Battery Holder)
  2. Controller PAK mods (Battery holder, FRAM)
  3. Rumble PAK mods (No Battery)
  4. Transfer Pak Mod for Everdrive GB cart (External)
  5. Metal Joysticks? (External)
  6. Gamecube Joystick (upgrade?)

Some of this sequence choice is based on "building" the skills for the more advanced mods, also the state of the console is considered. For example advanced IC pin mods are later, also the Heat sink upgrade will leave a lot more space around the IC pins for later mods.

Detail Steps:

  1. Find a working Console with Approximate US Serial Numbers NS135731008 to NS204554187 .
    1. Mine NS144804557
  2. Unscrew the top and confirm the motherboard revision
    1. Not NUS-CPU-04 ?
      1. Go to the first step
    2. Mine Verified NUS-CPU-04
  3. Test the console :)
    1. Not reliable?
      1. Go to the first step
  4. Recap the Power Supply
    1. Good skill building exercise (Through-hole)
    2. Power supply is interchangeable
    3. Power supply isn't 'collectible'
  5. Install Heatsinks
    1. Use a quality Heatsink adhesive!
      1. Not paste or other "hacks" that aren't thermally conductive or may fail later.
    2. MIPS VR4300
    3. Nintendo RCP
    4. Re-test: Note keep the Aluminum block on the RAM chips for this test.
  6. RAM chip swap 2x2 MB to 2x4 MB
    1. Tricky because it's SMD and lots of pins.
    2. Install RAM Chips Heatsink with Heatsink Adhesive.
  7. Recap motherboard
  8. RGB MOD
  9. Overclock Switches (External)

Soldering Tips

The following really makes it easier and improves the quality.

  • Adjustable Soldering Iron:
    • ex. Hakko 888-d Approx $100
  • Knife shape tip
    • ex. T18-K $10-15
  • Low melting point solder
    • Used for de-soldering
    • ChipQuik Solder Wire Sn42/Bi57/Ag1 Part: SMDSWLTLFP32 Approx $40
    • Alternative Qualiteks Sn42/Bi58.
  • Standard electronics solder
    • Low melting point solder, isn't good for everything.

Costs

Not including Tax or Shipping

Console: $50

Power Supply Cap Kit: $3.95

Console Cap Kit: $9.95

4 MB Chip: $25 each Est.

Controller PAK:

$15 FRAM

$1.25 Battery Holder