When do you have to replace a fuse?
If the light doesn’t turn on for one or both sides of the fuse, it is bad and you must replace it. If the light turns on for both sides of the fuse, it is fine and the problem is elsewhere. For example, you might have a bigger electrical problem or there could be a problem with your appliance.
How do you test a fuse on an RV?
Clamp the test light’s alligator clip onto any screw on the fuse box to ground the test light. Touch the test light probe to the left and right sides of the fuse, without removing the fuse, and watch for the light to go on in the handle. If the light doesn’t turn on for one or both sides of the fuse, it is bad and you must replace it.
How to check for a blown fuse on board?
If the fuse is open check FC1 and FC2. If needs replacement, board has to be lifted to desolder. If the fuse is healthy, check if there is any live supply coming out of that board anywhere, as the remote control receiving circuitry should be full time energized.
Can a bad fuse be tested under load?
Depends on the exact fuse construction, this is why they’re always tested under load. A bad fuse can produce a positive continuity test on a meter without a load, and a good fuse can produce a high impedance value without a load.
If the light doesn’t turn on for one or both sides of the fuse, it is bad and you must replace it. If the light turns on for both sides of the fuse, it is fine and the problem is elsewhere. For example, you might have a bigger electrical problem or there could be a problem with your appliance.
If the fuse is open check FC1 and FC2. If needs replacement, board has to be lifted to desolder. If the fuse is healthy, check if there is any live supply coming out of that board anywhere, as the remote control receiving circuitry should be full time energized.
Clamp the test light’s alligator clip onto any screw on the fuse box to ground the test light. Touch the test light probe to the left and right sides of the fuse, without removing the fuse, and watch for the light to go on in the handle. If the light doesn’t turn on for one or both sides of the fuse, it is bad and you must replace it.
What should I do if my remote control fuse is not working?
If the fuse is healthy, check if there is any live supply coming out of that board anywhere, as the remote control receiving circuitry should be full time energized. If there is no live DC anywhere, chances are something in that supply board is kaput or is not being commanded to turn on.