The camera and monitor are actually a car reversing camera kit. You can easily buy replacement cameras and monitors. Unfortunately the camera is screwed to a metal bracket inside the nose which can't be accessed once the dinosaur is built. You'll also find multiple different connector types available for both cameras and monitors so make sure you get the right one if you need to replace either (obviously).
The most common connection for cameras and monitors is the same as for CCTV cameras - an RCA phono for video (yellow) and a DC barrel jack for power (red). If you see a white connector, that's not used. If you see a green wire hanging out of a connector, that's also not used, that's for when the kit is used in a car. When the cables to the camera and screen fail, you can easily find replacements which you can either make up yourself - the cable type is nothing special - or you can buy cables already terminated with RCA and barrel connectors.
The DC power connectors (red) are 2.1mm / 5.5mm DC barrel jacks. That means that the inside pin is 2.1mm in diameter and the outside sleeve is 5.5mm in diameter. These connectors and premade cables are readily available but they do come in different sizes which look the same. For example 2.5/5.5 looks the same from the outside but won't fit.
Some dinosaurs come with a camera kit which connects through a Jansite 4 pin connector. This is designed to allow easy cable routing through a small hole in your car's dashboard or bodywork. In a dinosaur this is of course redundant but the connector is part of the kit. If you were replacing the whole system then this wouldn't be a problem, but if you're only replacing the monitor then you might have to replace the whole system anyway, or cut and reconnect the cables.
Inside the nose of the dinosaur, the camera is a little cube shaped device about 2cm across. It's screwed onto a metal bracket which is welded onto the dinosaur's skeleton. There is no way to replace the camera on the bracket because the screws are inaccessible once the foam and skin are attached.
However, there is a way, which involves three steps.
1. Remove the old camera
2. Disconnect the wiring connectors
3. Insert the new camera
Removing the old camera involves opening the access zip on the top of the head and reaching in until you feel the old camera. The smaller your hands and arms, the better. Grab the old camera and rip it out.
Disconnecting the wiring is done by looking down through the access hole to see where the connectors are cable tied to the skeleton. Thankfully the ties are small and fragile so you can grab the connectors and tear them away from the skeleton. Remove the completely unnecessary plastic tape holding them together (they are cable tied, they're not going anywhere) and pull them apart. Pull the old camera and its wiring out.
Insert the new camera by threading the wires in through the hole in the dinosaur's nose. Pull the connectors up through the space in the head and connect the new camera onto the existing wiring. Tuck the wires down the side of the skeleton so that they're out of the way of the eye and mouth mechanisms. Check the monitor to make sure the new camera is the right way up!
Finally, you can simply rest the new camera in the hole in the nose, or you can fit it in with some glue, or you can make a flange to sew it in - it's really up to you how you fix it in place. I find that they actually don't need to be fixed in place, they are held in by the foam. As a last step, if you like, you can paint the black body to match the skin.
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