Introduction: Fix a Vintage Simon Game
I recently got a new "Simon" game! They re-made it! Huzzah!
But when I played it, something was... lacking. It wasn't how I remembered it from the 1980s.
The buttons on this new one didn't move. The game didn't have the heft of the old ones. The tones sounded different. Even the lights weren't the same.
I realized the new one was built to be a lot cheaper. So I went on eBay and got a vintage "Simon."
Not only is the vintage "Simon" better from a aesthetic perspective, it is also boasts superior engineering, albeit with 1970s technology. It is fixable with a screwdriver and is thus more sustainable.
So how do you get a sick "Simon" back into fighting shape?
You will need:
- fresh batteries
- a Phillips screwdriver
- some way to test circuit continuity - I'm using a multimeter
Step 1: Check Your Batteries
The only disadvantage of the 1970s "Simon" is it is a bit of a power hog.
It requires a 9V battery, AND two "D" batteries. Why?
- the 9V battery powers the chip logic, the "brain." Back then it was referred to as a "transistor battery," to distiguish it from...
- the two "D" batteries, which primarily power the incandescent light bulbs under the buttons
- check all three of your batteries and make sure they are fully charged
- bonus points for rechargeable batteries!
- The light bulbs use a lot of current though, so putting rechargeable "AA" batteries in a "D" form may not be great.
Step 2: Open Up Simon
Now that we know the batteries are not the problem, let's look under the hood.
- flip Simon over so the colored buttons are faced down
- Unscrew the four Philips head screws on the bottom. Put the screws in safe place.
- gently lift off the entire bottom of the game!
- you will note the tops of the switches come off and lie there! This is normal. Make sure you don't lose them!
Now you have
- the bottom half, which has all the stuff that does anything
- the light bulbs
- the contacts for the buttons
- the switches
- the chips!
- the 4 colored buttons for the game
- switch covers
- the 3 colored buttons for starting a new game or reviewing the last one. Be careful, they fall out easily!
Step 3: More Simon Anatomy: the Bottom
- There's a paper ring on the edge of the board.
- This board has
- four light bulbs on it!
- all the switches for the game, implemented as little clicky strips of metal
- the three sliding selector switches
- a chip which holds all the program for the game
- a smaller chip which is the power control for the light bulbs
Step 4: How To: Fix Stuck Buttons
With your finger, click every little metal rectangle.
When you press it, it's connecting the metal to a contact underneath it. This is as simple a switch as you can get: no springs, nothing.
If you don't feel a click, the button is broken!
The way you fix it: bend the metal so it's not usually touching the contact, until pressed. That's it!
Step 5: How To: Fix Stuck Game Buttons
If one of the big four buttons doesn't seem to be pressable, here's what may be your problem:
- between each two buttons is a plastic "X" held in by a single screw
- this plastic X has two functions
- hold the button in place
- act as a simple spring
- if in the wrong place (as pictured), just unscrew it, replace it, and screw it back together
- if broken, you can put a new spring in here
Step 6: How To: Fix Non-lighting Buttons
You may here the game sounds, but the buttons don't light up
- if only a single button is not lighting, the problem may be a burnt-out bulb
- these are standard bulbs you can find at a hardware store
- BUT also - Milton Bradley engineers included an extra bulb inside Simon! Thanks, guys! If you think engineers still do that, you haven't taken apart many toys recently!
- your "D" batteries may be dead
- the contact from the "D" batteries may need to be cleaned (see below page)
- the power chip may be dead
- this would be a bummer, but it is not fatal - you can still get this chip. Buy a new one from Digi-Key or something and put it in!
Step 7: Detach Board
Further fixes require we get under the board! If you haven't already, unscrew the board and put the screws in a safe place.
Step 8: Check Power Connections
IF you are looking for wires connecting the "D" batteries to the board, you will be looking a long time!
In its normal working state, Simon's board sits directly on the contacts for the "D" batteries, and is held there by a screw running through the board into the contact!
As you can see, there is quite a bit of corrosion on my power terminals - the dreaded green crust.
Even though it looks like candy, DO NOT TOUCH THE GREEN CRUST. It is POISONOUS and also acidic. So how do we get it off?
Step 9: How To: Clean Battery Terminals
You can get this crust of in a number of ways:
- a dremel with... sandpaper!
- or you can start with a Q-tip and some baking soda
The idea here is you make a sodium bicarbonate slurry with water, and you brush it on to weaken the acidic paste and neutralize anything dangerous before it touches your skin. I usually start with this step and then move into sandpaper.
NOTE that on Simon, once again the engineers have smiled upon us: the entire terminal can be easily removed for cleaning. I realized this after I started. Oops!
Step 10: Reassemble and Test!
Put Simon back together and play a few games.
- do all the buttons work?
- can you hear the sounds?
- do the buttons light up?
- does Simon play the victory sound?
Participated in the
Green Electronics Contest 2016