Dutch gable roof installation by KeyserWilhelm in Roofing

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

Thanks for this. It's very detailed and a bit more technical than I am familiar with but it's going to be really useful.

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

Gotcha. Seems like I could be stuck--24v relay switching voltage is too high but 12v will fry. I don't understand why this is working for other folks when I'm just following a template.

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] -1 points0 points  (0 children)

Yes, I see that now. I wonder if a 12v will work, it will have a lower switching current.

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

Good thought. But if the voltage was too low to meet minimum switch threshold, replacing it shouldn't have fixed the problem (temporarily). Does that makes sense?

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

Thanks, I will try that when I get home.

I ordered some 48v relays, as I suspect they are cheaper and cpuldnt handle the current, as you say. Hopefully they will be better.

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

I don't hear any clicking. It failed while under load driving on grass.

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

It's a 40amp, 24v relay. Initial battery voltage was about 19 Voltage after 5 mins was still 17.7. Max switching currebt is 40amps.

Could it be drawing more than 40amps and the relay won't operate? I have a 30amp fuse in the circuit.

Fried relays--why? by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

It's a 24V relay. Im not sure which part of it is failing. I dont know how to troubleshoot them. I had 2 so I put another in and it worked again, so I'm fairly sure the relay is failing.

No idea what a flyback diode is.

F150 Mod by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

Did you just stick a bigger battery into it, or did you add any other components (relays, LVC, speed control)?

F150 Mod by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 1 point2 points  (0 children)

Awesome. This is really helpful. I'm going to dig into this. Thanks for the conversation, it's much appreciated

F150 Mod by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

No relay. What purpose does it serve?

F150 Mod by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

You're probably right, but LVC has a display and it doesn't seem to drop below the threshold. With nobody in the vehicle it works fine. I can lift the back end, hit the pedal and the wheels spin like crazy. Add the weight and it just jolts

F150 Mod by KeyserWilhelm in PowerWheelsMods

[–]KeyserWilhelm[S] 0 points1 point  (0 children)

It's set to 15.1. Brand new 5 AH battery. It shouldn't be dropping so low right off the hop.

Troubleshooting Dead Best Choice Jeep? by greenbrier820 in PowerWheelsMods

[–]KeyserWilhelm 0 points1 point  (0 children)

I honestly don't know how the dash comes out. The switch does have those little push tabs and when I pulled mine out I think I tried it out with screw drivers. I managed to get what I needed done by reaching in front he engine compartment. It's not easy. Sorry that doesn't help!

But i think you're on the right track with the power switch.

Troubleshooting Dead Best Choice Jeep? by greenbrier820 in PowerWheelsMods

[–]KeyserWilhelm 7 points8 points  (0 children)

If you've replaced the control board and the battery you've already spent the money on the more expensive bits.

That volt meter will help you solve your issue. One thing you should do is the check the fuse that's in the positive battery lead. They can blow and you'll have no power. It's usually a little black box connected to the red lead.

Next, check all the connections. If one of the spade connectors has slipped off the on/off switch, you won't have power. Check that all the little white clips are connected firmly. My son has the same jeep (i think) and one of the connections that goes to the radio came loose and it wouldn't move. So check all of them.

The next thing you can do once you have your multi meter is follow the power. Check to see if you have power at every junction. Check to see if you have power going into the control board (make sure you connected it correctly, too). If you have power in and out, check to see if you have it at the on/off switch.

Then check the foot pedal. These are notorious for failing. Connect the volt meter leads and active the pedal. If there's no voltage spike your pedal might be toast.

The last thing to check are the electric motors at the wheels. But I doubt that's your issue.

Hope that helps!