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The very first you're able to do would be to attempt changing the set of batteries and make sure that the RC and its controller operating effectively. When you are certain that your transmitter is malfunctioning, you can attempt acquiring for another identical RC toy at your local store. Their controllers will usually compatible with your RC toy once they are utilizing the same frequency.
Find out if some unusual object like water, dirt, or mud can be found in your toy by removing the casing apart. If you notice some dirty part, try cleaning it by using a canned air to blow the dust off away very carefully. It's also possible to properly wipe off some water, dust and dirt with a microfiber cloth. On the other hand, when there is too much water, you can attempt drying it off on a sunny day or make use of a hair dryer.
When the actions previously mentioned still fail to work out, you can attempt seek out some loose electrical wiring, damaged gears or parts. Maybe you can search with a magnifying glass to view loose components and repairing them with a tape or glue.
If each of the techniques earlier mentioned isn't working and discovered your RC's inner parts beyond repaired, however the body still looking great, you can opt to upgrading your toy with a hobby-grade parts. This last step can be a little more expensive. On the other hand, if you don't have any understanding of these possibilities, it would be easier for you to get a brand new RC toy. You might need to choose a more appeal design on this occasion which has spare parts available, because you will spend less in the long term.
I will try to write down the way to repair several brand of RC Toys in my future articles.