WEBVTT 00:00:00.000 --> 00:00:06.560 When one of my gaming systems spectacularly failed dumping water down the entire rest of the rack, 00:00:06.560 --> 00:00:11.360 the most expensive piece of equipment I lost was this battery backup. 00:00:12.800 --> 00:00:18.960 Now the obvious thing to do when a piece of uh high voltage electrical equipment gets doused 00:00:18.960 --> 00:00:25.840 in water would be to buy a new one, but I have a better plan. You see battery backups are expensive 00:00:25.920 --> 00:00:30.560 and one of the most important parts, the lead acid batteries 00:00:32.400 --> 00:00:38.080 seem to be working just fine. No, that isn't how I checked them. To eBay I went and while I could 00:00:38.080 --> 00:00:44.000 have bought a lightly used unit sans battery, it was this shipping damaged one that caught my eye. 00:00:44.000 --> 00:00:50.400 Hey Tyman, have a look at what we're going to be working on today. Oh boy. Specifically it is 00:00:50.400 --> 00:00:57.760 thousands of dollars worth of shipping damage. I got this unit for just 500 bucks meaning that it 00:00:57.760 --> 00:01:04.400 could very well be worth the time consuming, not to mention dangerous process of transplanting the 00:01:04.400 --> 00:01:11.520 hopefully working internals from the shipping damaged unit into the uh well probably still good 00:01:11.520 --> 00:01:17.520 steel chassis of the original one. So we can hope. That's why I brought Tynan. He's going to help make 00:01:17.520 --> 00:01:22.400 sure that I don't die today. From my point of view there's two options. We can look at the original 00:01:22.400 --> 00:01:28.800 unit and try and diagnose what exactly in it may or may not be dead or we can look at the new unit 00:01:28.800 --> 00:01:35.200 which I have about 12 days to inform the seller if it doesn't work and we can determine if we think 00:01:35.200 --> 00:01:39.920 there's even a chance that transplanting those parts in here is going to make this fully functional. 00:01:39.920 --> 00:01:44.640 Let's open up the shipping damaged one. If only there was some way to remove these fasteners. 00:01:45.600 --> 00:01:52.560 Like a screwdriver from LTTstore.com. Now I have to confess to you I did something bad. I did open 00:01:52.560 --> 00:01:57.760 up the original one to have a look at it. I didn't touch anything which is very important because 00:01:58.480 --> 00:02:04.640 more than anything else we've ever done. Folks do not try this at home. This is high voltage, 00:02:04.640 --> 00:02:09.040 high current electrical equipment. There are capacitors in here that if you touch them you will 00:02:09.040 --> 00:02:14.880 die. And the batteries. That too. Oh yeah I fooled around with the batteries too. That's why I'm 00:02:14.880 --> 00:02:18.880 pretty sure that they're working but if you wanted to validate that for me then that would probably 00:02:18.880 --> 00:02:24.320 be really good. Tynan's background is what are you like mechatronics? Mechatronics engineering. 00:02:24.320 --> 00:02:31.600 Yeah yeah so some mechanical, some electronics. Oh grief. Yeah let us have batteries. He told me 00:02:31.600 --> 00:02:35.280 when he came in today that he was worried we might be doing the lithium ion when I was like 00:02:36.240 --> 00:02:44.880 no I know much better than to fool around with any lithium ion battery this. 196 volts. It's pretty 00:02:44.880 --> 00:02:52.640 clear that some of these boards did get a little bit rough housed in shipping like this one. Yeah 00:02:52.640 --> 00:02:59.040 that looks very destroyed. I've seen so much worse than this. The outside is really bad and you can 00:02:59.040 --> 00:03:06.640 tell this thing took some bangs. Yeah. But like most of it looks fine. What's safe to touch? 00:03:07.200 --> 00:03:12.800 Like these wires for sure. Yeah. This shroud probably maybe depending what's under it. Everything's 00:03:12.800 --> 00:03:18.400 probably safe but we'll double check. Boards designed like this should have bleed resistors on 00:03:18.400 --> 00:03:25.200 any of the big capacitors so they should discharge in a safe time but you don't want to assume that. 00:03:26.000 --> 00:03:29.520 How do we check? Looks like there's a whole bunch of touch points on 00:03:30.160 --> 00:03:34.720 a lot of the main traces that should be able to be measured. Before you get to probulating 00:03:34.720 --> 00:03:38.800 those should we change gears and have a look at the water damaged one to see if there's any 00:03:38.800 --> 00:03:43.440 clues as to what we may or may not need to salvage. For sure. This could be good because 00:03:43.440 --> 00:03:48.320 what's missing from the shipping damaged one is all of the boards associated with the interface 00:03:48.320 --> 00:03:56.160 and the display which I mean clearly didn't get at least much water on it. Does anything jump out 00:03:56.160 --> 00:04:03.520 at you immediately here? It's really dusty. We moved all the equipment in while the house was 00:04:03.520 --> 00:04:11.120 kind of still a construction zone. That's on me. I think I noticed something. The new one is Rev03 00:04:11.840 --> 00:04:18.080 and the original one is Rev00P. See even when you revise a product that doesn't mean that you 00:04:18.080 --> 00:04:22.400 revise every component of the product. They may be completely intercompatible other than they had 00:04:22.400 --> 00:04:27.520 to change a supplier for a part and they just revved it so that they could keep track of that. 00:04:27.520 --> 00:04:32.880 In terms of immediate water damage things the circuit breakers obviously got dunked on so that 00:04:32.880 --> 00:04:39.280 may be a problem. Tell me this. What would be your methodical way to approach something like this? 00:04:39.280 --> 00:04:46.720 Would you replace one part and try to fire it up or would you just go wholesale complete change out 00:04:46.720 --> 00:04:52.560 and then hope for the best? How much time we have. Probably first thing is figuring out if there's 00:04:52.560 --> 00:04:57.040 anything obvious that's not connected that's supposed to be. Everything should be connected. I 00:04:57.040 --> 00:05:02.320 haven't actually touched anything in here because I knew that I was out of my depth. Yeah and we're 00:05:02.320 --> 00:05:09.440 meant like shorts or disconnects. Oh sure other possible spots are over the fan here in fact you 00:05:09.440 --> 00:05:15.120 can see where the water drips were coming through here. There are no holes conveniently over this 00:05:15.200 --> 00:05:23.440 board which is good. These holes are obviously right there and then there were also holes here. 00:05:23.440 --> 00:05:30.240 What's this? That's a plug. That should not be a problem. Okay and then these holes were over the 00:05:30.240 --> 00:05:35.360 battery compartment which survived and is now completely dry. This happened over a month ago 00:05:35.360 --> 00:05:40.560 now and it seems fine. I don't think the breakers are damaged to the point where it would matter 00:05:40.560 --> 00:05:46.000 because either they're connected or they're not connected and they're connected. Oh balls. 00:05:48.080 --> 00:05:52.080 It's probably not going to be an easy fix. There's a chance that there's 00:05:53.040 --> 00:05:59.440 like some of the fuses for the inputs blue or maybe some of the control board or what looks 00:05:59.440 --> 00:06:08.720 like a control board back here fried. Oh could this be as simple as a safety feature working for 00:06:08.720 --> 00:06:17.760 safety and our fuse blue? Quite possibly. Hey blown fuses. We know this because we're getting 00:06:17.760 --> 00:06:23.280 a continuity beep on the shipping damaged unit and we are not getting a continuity beep on these 00:06:23.280 --> 00:06:30.240 units. This is input from the batteries to the inverter. This looks like it might be the ground 00:06:30.240 --> 00:06:36.880 return. Nope what is that for? What I'm gathering is you don't want to just put the new fuses in 00:06:36.880 --> 00:06:42.480 because then we don't have backup fuses if they blow. Depends on how dangerous you want to live 00:06:42.480 --> 00:06:47.120 because yeah we have one attempt at these fuses not blowing again. Right. We should probably take 00:06:47.120 --> 00:06:53.120 these out of the chassis. Okay I can do that. Cool I'll do that one. One of the things I am 00:06:53.120 --> 00:06:58.560 concerned about for this is the second board underneath which may have been water damaged 00:06:58.560 --> 00:07:03.520 more than we can see here and this other fuse looks like it goes straight down. Whenever you're 00:07:03.520 --> 00:07:07.520 looking at an electrical system like this for capacitors you want to look for anything that's 00:07:07.520 --> 00:07:12.240 50 volts rated or higher. I would recommend checking everything but those are the ones you 00:07:12.240 --> 00:07:22.880 really want to look for. 275. So we want to check the big oh I didn't even see that one big and 00:07:22.880 --> 00:07:27.760 then you want to see look for the two sides of the capacitor. In this case there's a whole bunch of 00:07:27.760 --> 00:07:34.640 vias around on these traces so you can just find traces on both sides, probe across it and you 00:07:34.640 --> 00:07:40.640 just want to see that it's zero or close to zero. Now I noticed you have this set to volts DC but 00:07:40.640 --> 00:07:46.880 this says it's rated for 275 volts AC. Yeah capacitors are rated differently for AC versus DC 00:07:46.880 --> 00:07:51.360 depending on the type but when you're trying to make sure something's de-energized you want to 00:07:51.360 --> 00:07:58.320 measure DC because AC can't exist when it's unplugged. I'm excited they never let me play with 00:07:58.320 --> 00:08:05.120 stuff like this. That's why I'm here. My only thing is that if I ever die on camera I expect 00:08:05.120 --> 00:08:09.520 the company to monetize it to get that cheddar. I know it doesn't matter because they design 00:08:09.520 --> 00:08:14.800 around it but it always sketches me out when you screw a metal screw with a metal washer directly 00:08:14.800 --> 00:08:20.960 onto a PCB. I just don't like it. Well it's probably a good thing they can cause fires sometimes 00:08:21.920 --> 00:08:27.440 while I was doing some research for this shoot I found a nice eaten handbook that I found 00:08:27.440 --> 00:08:34.400 extraordinarily entertaining. Oh. Super professional. Oh my god. Professor Watson. I love him. The 00:08:34.400 --> 00:08:44.000 particular page that really got me was this one. Nine ways beer and UPS's are alike. Okay. 00:08:45.600 --> 00:08:48.960 Here she comes. Oh perfect I can look at that now. Okay I'm not going to break anything. 00:08:51.760 --> 00:08:57.920 Nice solder job eaten. That's quality. I didn't realize these were pastures. Yeah it took me a 00:08:57.920 --> 00:09:04.320 minute to figure that out too. They go into what look like gigantic chunky ground pins. It's it's 00:09:04.320 --> 00:09:08.400 there's essentially bust bars between the boards so that's how they're getting lots of power in 00:09:08.400 --> 00:09:14.080 between the two boards without having to own wires. It's kind of funky though that they just use 00:09:14.080 --> 00:09:18.880 giant standoffs. I mean metal's metal. Yeah and if it's metal then it's metal but like. 00:09:18.960 --> 00:09:23.520 And they're brass. Look at this shmoo. Oh I mean. We thought the top was bad. Yeah look 00:09:24.080 --> 00:09:29.520 giant capacitor bank. Whoa. Whoa look at the size of the bleed resistors. Yeah. 00:09:31.680 --> 00:09:36.640 Before we tear them both completely apart what are the odds that the short in the breaker 00:09:36.640 --> 00:09:43.520 would have caused those fuses to blow? It would have had to have been a short between the breakers 00:09:43.520 --> 00:09:49.120 because one breaker is a single phase of power. Yeah. So it would have to short across two phases 00:09:49.120 --> 00:09:53.920 for those to blow and in theory these should break if anything downstream of them fails. 00:09:53.920 --> 00:09:58.240 But if that were true then why would you need fuses anyway? Because you're dealing with enough 00:09:58.240 --> 00:10:02.480 power that if something goes wrong your board's going to melt. Right. Your hands are small right? 00:10:02.480 --> 00:10:07.920 Oh yeah. Cool. That's my superpower. I will need your small hands to get that exact connector out. 00:10:08.720 --> 00:10:13.760 Uh all right cool. I think it's dead. It looks like it's dead. I call dead. 00:10:14.960 --> 00:10:19.040 Oh yes. Okay we found another dead fuse this time on the bottom board. 00:10:20.000 --> 00:10:27.280 Huh all the fuse is blue. The system works. Oh yeah okay. Actually getting a close-up of 00:10:27.280 --> 00:10:34.800 the two fuses is probably interesting because here's the not f***ed one. Oh yeah. Oh there's 00:10:34.800 --> 00:10:43.360 your problem. Hey we found it. We were looking at the top. Yeah that's not good. Okay. That's very 00:10:43.360 --> 00:10:48.880 not good. Okay well no that's great. Now I don't know why it's dead. Yeah. I actually see where some 00:10:48.880 --> 00:10:56.000 of the electricity was breaking through the solder mask around the edge of the trace. Oh cool. That 00:10:56.000 --> 00:11:02.400 would have uh electrolyzed the water. So this fuse probably tried to save everything else but 00:11:02.400 --> 00:11:08.080 it was completely soaked in water and never stood a chance unfortunately. Thank you for your service. 00:11:10.080 --> 00:11:14.960 I found some more hidden and sneaky shipping damage on one of the boards that got a little bit 00:11:14.960 --> 00:11:22.240 crunched. Oh. It doesn't look like it's damaged. It'll impact anything but I'll be taking a closer 00:11:22.240 --> 00:11:28.560 look at this board after we get it out. Okay I have bad news. I believe this is a different revision 00:11:28.560 --> 00:11:34.800 than the one that's in here. Yeah. So we may need this board to work. Yeah. Like your IC is 00:11:34.800 --> 00:11:42.400 completely different from mine. There's the crunch. Oh that might be fine. Yeah like it's 00:11:42.400 --> 00:11:46.880 probably fine. That might just be a ground or something right. I'm not taking everything out 00:11:46.880 --> 00:11:52.160 of here because we decided that we were going to keep the receptacles and also uh. This side is 00:11:52.160 --> 00:11:57.600 super mangled on this one. Yeah for the input so I guess we just leave all of that. Yeah. Which is 00:11:57.600 --> 00:12:03.600 kind of convenient because it means we're not actually rewiring that much. So is this it? Yeah 00:12:03.600 --> 00:12:08.640 I think we just put it back together. Okay good luck everybody. Now under normal circumstances 00:12:08.640 --> 00:12:14.000 I would absolutely look at something like this and I'd go oh man let's just let's do a quick test 00:12:14.000 --> 00:12:19.760 boot of it you know on the bench but we can't. We don't even have a way of connecting the top 00:12:19.760 --> 00:12:24.240 board to the bottom board without screwing the whole thing together anyway. Also from a safety 00:12:24.240 --> 00:12:30.080 standpoint this chassis protects us from even if we're careful accidentally touching something 00:12:30.080 --> 00:12:36.000 that we really don't want to touch. Yeah there were I think seven or six hundred volt caps under here. 00:12:38.480 --> 00:12:43.760 Looks like I'm now ready for board number the two. No way. Yeah. I've got my breakers almost in. 00:12:43.760 --> 00:12:47.760 Dude this is going so fast. Yeah. We're going to plug this whole thing back together. It's going 00:12:47.760 --> 00:12:53.120 to turn right on. We're going to be like damn we're really good at this. And it was totally worth it. 00:12:53.120 --> 00:12:59.600 You know we've actually got a couple of videos coming soon on the economics of you know buying 00:12:59.600 --> 00:13:04.560 broken stuff on ebay and fixing them. We bought a half a dozen cpus and then I think we bought a 00:13:04.560 --> 00:13:09.760 bunch of motherboards. Then we're going to compare to the median us wage and see if we could make a 00:13:09.760 --> 00:13:14.720 living just like buying things on ebay and fixing them. This one was unintentional this was more 00:13:14.720 --> 00:13:20.400 just I really really really really really didn't want to buy another one. I don't know exactly why 00:13:20.400 --> 00:13:24.880 these are directional but I do see what looks like a diode marker on them which implies it's 00:13:24.880 --> 00:13:29.680 designed to go in a particular direction. Oh. Generally with these when they break 00:13:30.560 --> 00:13:35.520 they're high enough voltage that it'll maintain an arc even if the conductor has broken so they're 00:13:35.520 --> 00:13:42.720 filled with glass or sand that act to damp out the arc that's created. Okay here's your orientation. 00:13:43.280 --> 00:13:48.320 Cool. Gotta say I kind of feel like I'm waiting for the other shoe to drop a little bit here on 00:13:48.320 --> 00:13:54.320 this project. Same. It's going too good. Okay this cable was almost certainly supposed to be 00:13:54.320 --> 00:14:04.480 routed underneath but it makes it which means that's the last screw. What's your confidence level? 00:14:04.480 --> 00:14:11.920 Honestly pretty high. Now I have an idea. Okay. I was thinking we power it up with just the battery 00:14:11.920 --> 00:14:19.040 before actually plugging it into the wall. Sure. Okay. Do you need help? No. Sure. I'm used to having 00:14:19.040 --> 00:14:22.720 to carry around something heavy like this you know. With your tiny hands? Yeah yeah yeah. 00:14:26.480 --> 00:14:35.440 Squeaky noises and electronics. Yay! BP volt out of range. UPF shutting off. Battery pack. 00:14:35.440 --> 00:14:42.000 Let battery pack hold the dead range. Which is probably too low. Okay. Oh it's probably shutting 00:14:42.000 --> 00:14:46.960 itself off because it's too low. Too low. Yeah. Which is fine. So with a wall plug it's probably fine. 00:14:49.360 --> 00:14:50.880 Let's get the cover on. Yeah. 00:14:53.840 --> 00:15:01.280 That's all I gotta do is slide her in. I was about to say that's the last thing that's broken. I 00:15:01.280 --> 00:15:09.440 forgot my son's gaming rig. It's like she's working but she's limping. Okay. Nothing beeped or was 00:15:09.440 --> 00:15:22.400 disastrous. Here goes the plug. I hear the UPS. Let's go have a look. Load not powered. 00:15:24.240 --> 00:15:30.240 Emergency off. It says battery pack voltage out of range but we measured the voltage at about 200 00:15:30.240 --> 00:15:36.560 and on the top of the unit it says nominal pack voltage is 180 volts so that should be fine. 00:15:37.280 --> 00:15:45.280 Yeah. Dude, timing. Oh did we do a dumb? Ah well we didn't. Oh no. But I might have. 00:15:46.080 --> 00:15:52.320 See that little green RPO thing? It's supposed to be jumpers. Oh yeah it is. I know the thing. 00:15:52.320 --> 00:15:58.880 I've meant to put that back in. Yep that's important. After painstakingly paying super 00:15:58.880 --> 00:16:04.240 careful attention to everything we did internally I think we just were like oh we put it back together 00:16:04.240 --> 00:16:07.840 let's go test it and I think we might have just missed that jumper and that might be it. 00:16:07.840 --> 00:16:12.480 All powered on already. Okay hold on it's saying please wait right now. It worked. Online mode boom 00:16:12.480 --> 00:16:20.720 we're in. Oh that's terrible. That sucked. Yeah let's go. She's on. Load protected online mode. 00:16:20.720 --> 00:16:26.560 Okay okay yeah yeah yeah I'm plugging the PDU in. Okay okay go for it. Oh it's alive. 00:16:28.800 --> 00:16:34.800 He's drawing the power. Yeah this right here this is the face of a guy who just saved thousands of 00:16:34.800 --> 00:16:41.840 dollars. Ah freaking awesome. Time to get everything plugged back in. Probably the worst thing that I've 00:16:41.840 --> 00:16:47.920 been doing lately. No no it's not even this is the fact that the 240 volt device on the other end 00:16:47.920 --> 00:16:54.560 which is the 115 inch TV because it's China. I just plugged it into a 120 fold outlet and I was like 00:16:54.560 --> 00:16:58.400 I don't know maybe it's going to be fine. My understanding is it does put additional strain 00:16:58.400 --> 00:17:03.520 on the power supply but shouldn't kill it immediately so I'm going to be powering my TV properly now. 00:17:05.200 --> 00:17:08.880 Properly. Well properly-ish. You know you can just 00:17:08.880 --> 00:17:14.000 re-terminate the plug onto the actual cable instead of Jerry rigging the cable to another 00:17:14.000 --> 00:17:18.480 cable right? Um yeah but this was convenient because I think the cable was already in the 00:17:18.480 --> 00:17:22.800 wall or something I don't know. Yeah you you can terminate it to the cable that was in the wall. 00:17:22.800 --> 00:17:29.280 Yeah I don't know there was a reason I did it that way I can't remember what it was. Okay boop boop boop boop 00:17:29.840 --> 00:17:37.840 and boop. One and a half thousand watts no problem baby efficiency 87 percent. I don't know if 00:17:37.840 --> 00:17:42.400 that's good but it's good enough for me and it's good enough to tell you. I can't tell if I'm 00:17:42.400 --> 00:17:48.960 blessed or cursed you know. Both. Like the water the random corrosion wouldn't have happened to 00:17:48.960 --> 00:17:55.280 someone who was blessed right but then someone who was cursed couldn't have possibly gotten a UPS 00:17:55.280 --> 00:18:00.320 of that caliber for five hundred dollars. And conveniently had someone on staff who knew how 00:18:00.320 --> 00:18:06.880 to rebuild it. Well yeah that too. If you guys enjoyed this video maybe go check out part one 00:18:06.880 --> 00:18:11.840 where the bulk of the diagnosis of the leak itself took place. Hey do you want to see the 00:18:11.840 --> 00:18:12.800 fitting. Yes.