Hi just a little home repair video I thought I'd show you yes I am still sick as a dog, absolutely terrible. Can't do anything but I am looking at this and this is one of that Sagan's toys. It's one of these, um, speed pipe things. It's like a little like remote-control car that goes through these pipes.

these tubes that you can click together in different configurations to make them do loops and and corners and all sorts of stuff. Kind of reminds me of the Running Man if you've seen the Running Man if you haven't, you must watch them. Running Man Classic Arnie Check out this case. I Thought this was rather interesting.

this look it's got a yeah, it's got a PCB pattern on the back of that I Don't think that's a legit pattern. Of course it's one of those are fake fake ones. but anyway, yeah, it's just got dark controls like forward and reverse controls and that's basically it. and it's an infra red thing because the it's not RF and none that IRF ravish because the tubes are are clear so that they can see through.

so the little cutter, self-contained battery-powered car inside the tubes obviously receives the IR signal telling it where to go. Um, so sorry. I've only got my Sony Rx100 camera here. so I don't have a good macro lens.

but anyway, I'm Sagan was complaining that he thought that Huxley had buggered this. It's obviously like a channel a switch because you can have like 2 of these in the same tube like trying to race and catch each other. And he said that Huxley had somehow busted it and he couldn't move the switch anymore from A to B and that's why it wasn't working and one of the certain. Sure enough, I'd like tried that and it and it could I couldn't budge that switch and you know I got the knife in there and and it just it didn't make sense at all.

And then I took the first. One of the first things to do is look at the visual cues on here. you might be able to see and that plastic is a bit deformed and melted. Aha.

So the next thing you do is give it a bit of a ah sniff and yep, it's got that classic burn electronics smell so something is shorted out. So I opened it up and sure enough, sorry I Gotta try and hold the camera of one hand and you might be able to say that those wires have shorted together not only with the two wires shorted together coming from the battery terminals, but then the black. Why? I was also shorted to the backside of the switch down in there. Sorry, it's hard to show you that it was also shorted right down in there.

you might be able to see I can't get any closer without a good macro lens so the batteries were completely shorted. So what sparked that and it no pun intended not that you would have gotten a spark really. I'm the better Anyway, yeah what? Like obviously at the current directly from the batteries it was short in them out and that and that melted all the wires and melted to the side of the switch and you can probably see the switch down in there is all. he's all melted that a B switch.

So yeah, it heated all this up to buggery. Did it short out inside a switch because usually the wires have been a pretty good insulation on them so really like it. Of course one of them could have had a neck, but then well, the other one would have had to have a nick in the same spot. Very so.

that switch has heated up obviously the the metal body of the switch and that's melted all the plastic all around there on the on the actual WA lever of the switch, the sliding lever there and then it just melded the wires together as well and I had to have to pry those apart. had to get the knife right in there and and really chop those really chop those out, has had a really hard time separating them actually say so. You should be able to see that exposed negative wire there and how all the insulation is just completely melted off that and then melted into the side of the switch housing. So ordinarily, the those switch housings aren't actually electrically connected to one of the terminals, one of the switch contacts, so they're just floating.

and unless you on the PCB layout, you put the pins in there. So let's get Wow check out that switch. The the lever contact on there is completely melted off and embedded itself in the actual in. These are switching over the top cap.

That is unbelievable. This could have got massively hot. Of course there's a lot of energy in two double-a batteries. so yeah, you sure them out and that can.

That can really heat up and ruin your day. So what's going on here? Let's have a I Don't know. let's have a look at that. Yeah yeah, door just fell off.

Wow Look at that. so it's a look at the bottom here. Uh-huh. Yes, The there you go.

The outer. It is electrically connected. So that's what's happened. You can see that the the two contacts on the two outer pins there are the electrical contacts for the case of the switch and obviously the ground terminal.

Oh yeah, so it's actually grounded. No. so it's negative. So if the ground terminal yeah, you have to strip the wire to solder it in.

So if that made contact with the outer metal case, that shouldn't that really shouldn't have Matter what's the chip on there, can't see it. Sorry. Maybe those playing along at home can pull the part number off that from an HD screen. So they've electrically connected the case of that switch.

so what so it could have it could have. been an internal contact short in the switch would be my guess because the white wire is sold at. yeah, it is significantly a wave from that. So obviously once they may be sure to add out inside the switch and then yeah I would say that's the do is the because really, they aren't power contacts.

that's not the power switch, that's the A/b signal switch. So it's all logic level stuff. So even if it's shorted out inside there, you know the path would have to be through the chip to short out the battery. So that doesn't make sense at our power.

no locate. No, no, no there it is. sorry I can see it. Yeah, it comes from the power switch over here.

Yes, Okay, so the power switch? Yep, yep, so that's second pin over. there is power. Yep, so obviously that's where it shorted out that comes from the power switch over here. Uh-huh There you go.

So it's in all likelihood chips. okay and it's just shorted out the battery. So if I clean that up and just died and I put a new switch in or oh no, no I just permanently bar it cuz we've only got one of the things. so I'll just permanently wire it to channel B and so I just D solder the switch I guess and cleaned all up and that hopefully will work again.

Hmm yeah, not sure if you can see that but I can certainly see that inside that switch. those contacts are toast. So yeah, the shorts actually definitely happened inside the switch. and it has to be.

That's the obvious conclusion based on the fact that the power comes in here. There we go. As the positive goes down to the switch comes out of the switch, goes up that trace there sorry for my crude finger-pointing goes to the second contact. So that second contact has shorted out to the external case which they decided to ground instead of float and there's no electrical reason to do that.

So you could maybe blame the high D blame the PCB layout person or do you blame the original designer who specified that I wonder if that's specified on the schematic, whether or not they showed that those pins were electrically connected to ground or not? There was no. You know, there's no like EMC reason to do it or anything like that. So yeah, you're reliant upon the reliability of that switch to prevent shorts. Anyway, I Think that's a rather interesting fault and it can show you how you can really come a guts a boy relying on one of these are cheaper switches they obviously got from whoever was cheapest at the Shinzon market that day.

When they're making this and that it must have shorted out inside. you know all it takes is a little. You know, a little solder ball or some other little life flake of anything. Maybe it's just a badly designed switch and they've completely come a gutter and that's shorted out the batteries.

Unbelievable. Probably the last fault I would have expected in such a product. So if you've seen a similar sort of our power, well, in this case it's a signal our switch in Eva There's a pin on the micro here that obviously either connects directly to ground on this side or to power on this side. and it doesn't do it through a through a resistor through a protection resistor.

So it obviously if you get a short with inside the switch, it's gonna ruin your day. Anyway, let us know if you've seen something similar in a product I Hope you liked it. Catch you next time.