Ring 12V Digital Automatic Tyre Inflator | Can I Fix It?
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- Опубликовано: 25 авг 2023
- In this video we're going to be looking at a Ring 12V Digital Automatic Tyre Inflator purchased as faulty from eBay.
The seller said he'd taken it apart to see if there is a connection issue or maybe the motor had burnt out, and the motor and compressor works perfectly when 12v is applied directly to it. He also said he couldn't see any burnt out components or loose connections...
Let's have a look and see if we can identify the problem, and hopefully repair it.
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#electronicsrepair #electronics #repair
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Nice one Mick, good fix. I have the exact same tyre pump.
As for the diode across the track, and the other diode that has a capacitor symbol, it's possible the board went through several design iterations, with components / tracks being changed to make it work, then the designer wasn't allowed to tidy things up once they got a working solution due to time / budget constraints. You can imagine the conversation:
Engineer: Hmmm it doesn't work, what happens if I change this, and this, and this? I'll just bodge it quick to check. Ah, fixed it.
Manager: Great, we're on a deadline, send the final PCB design to the factory.
Engineer: No wait, I only bodged it, I need to redesign the circuit board so it's congruent with the new design.
Manager: How long will that take?
Engineer: Half a day to change the design, then a week to get a few made up ones back from the factory, then I'll have to run all the full suite of tests again including a soak test, to make sure I haven't broken anything else by mistake, at least 2 weeks.
Manager: No, time for that.
Engineer: But the PCB, it looks funny, people will laugh.
Manager: Don't be daft, no one's going to look. This is a $20 disposable piece of consumer electronics, it will definitely never be repaired and streamed live on RUclips for the world to see your folly. We don't want to miss out on a week's sales for your pride. Ship it!
😆
😂😂😂Nice one Colin, yes I could see that happening 👍
😊
Thats how I found your channel, from my mate Vince's channel.
Nice. Vince has given me a shout out a few times on his channel, so I return the favour too 👍
Me too
Same here from across the pond
Finally, I found an electronics repair channel with an accent I can fully understand! Subbed, going to have a look at the rest of your videos, thanks for uploading!
😂😂😂😂When I first started doing videos I was really self conscious of my accent, and thought who's going to watch some geordie bloke trying to fix random stuff, guess I was wrong 🤷♂️
That disappearing diode was so funny 😂. I spent a whole night looking for a part that was stuck to the sleeve of my jumper. The frustration then euphoria 😂😂
Yes it did! I was like what's the chances of that 😂😂😂😂
@@BuyitFixit Magicians are taking note of that one I’m sure 🤣🤣🤣
I hate it when youtubers say thanks for watching because its as if they believe I wasn't actually really interested. You are the one who should be thanked!
Thanks, but hate is quite a strong word. I'm just trying to be polite and there is a lot of content out there by different creators. Some people like my stuff and some don't, so I do genuinely appreciate people watching me content.
Some great fault finding there. Well done!
It pains me to think that so many things like this are often chucked out with the garbage when it's just a small inexpensive component which has failed. At least the former owner had the good sense to sell this one.
Thanks M Jons👍
Do you have a local Repair Café? Keeping repairable items out of the garbage is the aim. -And we are always looking for volunteer 'fixers' if you have the skills.
Yes we do, and I'm already a volunteer 🙂 In fact I'll be there this Saturday as we hold it once per Month 👍
I thought it was the relay, almost sure, but I was totally wrong. 😂I love your channel. You teach me to not to jump to conclusions. Keep up the good work!
Thanks Ted 👍
Thank you , Mick, for showing us all what it is that you do to get these things fixed/repaired! I like your deductive reasoning and I always get something from what you show us in your videos!
You're very welcome 🙂👍
Happy to see your channel is steadily growing and gaining subs! I enjoy your videos!
Thank you 👍
That's something that will probably stick with me. Not sure if I would have paid all that much attention to the abnormal voltage drop before seeing this. Good stuff.
Thank you 👍
You are seriously the Truest Repairman
😂😂😂Thanks JS👍
Another way of finding the faulty transistor might have been to check presence of drive voltage on the base and lack of switching of the collector.
Good point 👍
Great fix as always, thanks Mick 😃
Pleasure Mike, thanks for commenting 👍🙂
I've had that compressor for 12 years now but mine only came with the cigarette plug. A tip to keep it running for years, take the compressor apart and lubricate it with high temperature grease as they aren't well lubricated at manufacture. I bought 2 others for my sons in-law and theirs overheated and seized up.
Thanks for the tip 👍
But not the "compressing"part....Greasing/oiling where pressurised air goes is never a good idea...Think diesel......
@muppetpaster compression ignition 😂😂😂
@@muppetpaster The compressed air goes into the tyre, in 12 years it hasn't started running on it's own power 🤣🤣🤣🤣🤣🤣
That was a hard one. Good work there.👍👍
Thanks Jaques 👍
I use that tiny sander you recommended a while back alll the time. That thing is incredibly handy for rust. Fixed a lot of things with it. Not related to this video but wanted to mention it
Cool, yes I've used mine a fair bit too. They are quite handy!
I have been picking up soldering practice kits off of Aliexpress, so far got a 0-30v variable power supply kit, a multiuse chip programmer with modules for different sorts of chips and ordered yesterday a fairly robust 2 channel amplifier kit with speakers. Quite enjoyable just putting these together and they cost only a few pounds each and already the PSU has earned its keep.
Nice, I might have a look to see what's available. There's loads more stuff around now than they used to be. I remember having to etch my own boards and things back in the day 😂😂😂
i didn't think you will be doing a video today i just got a notification from you tube im glad you did i always look forward to watching your videos on a Sunday morning thank you as always great video and all the best
Thanks John, yes I posted this one yesterday. Glad you enjoyed it. All the best to you too! 🙂👍
Brilliant Mick well done I was thinking that transistor didn’t look right, thanks for the upload 😊
No problem Cucumber Man 👍
Loving your channel. You fix a lot of different stuff, which I enjoy!
Thanks Larry 👍Yes I try to do a wide variety of stuff as channels that do likes of consoles for every video get a bit boring so I try to keep it interesting, and you never know when someone else might have the the same item with the same problem so hopefully it will help people repair their stuff too! 🙂
your so gifted to fix that stuff love your videos
Thanks 👍🙂
Fantastic fix my friend. Thanks for sharing your knowledge with the world. Kind regards. Paul.
Thanks Paul 👍
Excellent work, as always. It's nice to see I'm not the only one whose wheels are caked in brake dust and other crap...🤣🤣
😂😂😂😂
@@BuyitFixit Easy Off oven cleaner will take care of that.
NOOOO, that would mean I'd have to also wash the bloody thing 😂😂😂😂😂
@@BuyitFixit bloody clean freaks... 🤣 🤣
@@generaldisarray 😂😂😂
Good methodical work.👍 Subbed.
Thanks 🙂 you'll probably like the RGB laser video I did or if you like software or the ultrasound machine I looked at 👍
Love you work. Congrats on 10k. We must talk tools.
Thanks 👍, sure no problem 🙂
Nice little puzzle ! what about that diode ! Lol that needs a change note issuing ! I bet you jumped out ya skin when that pump fired up great repair !..cheers.
Thanks 👍Yes I did 😂😂😂😂🤦♂️
Its funny, only yesterday i watched MMVs video on tyre inflators.
Synchronicity!?
I found them interesting, so I find this interesting.
Good choice.
Thanks 🙂yes some strange coincidences lately 😂😂
That was an extremely interesting video, I have the very same model tyre inflator, still going so far, ( fingers crossed ) not being an electrical person, I didn't understand all the electrical side of the video, but hats off to you for your patience and detective work, very well done!
Thank you 👍🙂
Awesome ✌🏻✌🏻✌🏻
Great concentration 👍🏻👍🏻👍🏻
Thanks 👍
I presume the transistor was switching the relay but when polarity was reversed the bypass diode carried enough current to blow it. Might have been tempted to replace any electrolytics that have been subject to reverse volts to avoid future problems.
It could well have been the case. If the original owner was using the cigarette lighter adapter and then one day used the crocodile, clips which were incorrectly wired, then that might explain the sudden failure. Or perhaps he never used the crocodile clips and it was just a random failure 🤷♂️
Nice one! 😊
Thanks 👍
Superb!
Thanks Diane 👍
Good job
Thanks
29:39 LOL I was laughing and telling you it was under the cap tester. I taught that something sticky was under the tester and it grabbed the diode.
😂😂😂good spot, it was actually jammed in the screw hole. Chances of that...
My friend you won a new subscriber 😅😁🙂🙂
Thank you too friend! I hope you enjoy the rest of my videos 👍
It's nice that they give an replacement diode if D1 blows lol
Yes everyone gets a free diode 😂😂😂
That diode gone wild
I like the diode.... guess someone messed up the PCB layout and they still charged by the piece and put them on. Now you have a spare diode!
Yes 😂😂😂😂
Capacity readings on a Fluke 179 (frankly, on most multimeters) are never "precise" It is more an indication reading (ballpark) as an extra function.
The tester you use is a way better option.
Totally agree, it is pretty accurate when the component isn't in circuit but doesn't measure the ESR.
Nice fault finding and repair :) I have 2016 Kia Rio, which came with quick fix kit, and no spare tyre at all, but to this day, still haven't even tried that compressor, maybe I should take a look at it some day, does it even work :P
Thanks mate 👍yes might be worth just testing it just in case it's ever needed...
The beat of luck note is nice :)
Yes it was a nice touch 👍
thank for showing fault finding nice slow not leaving nothing out keep doing please help others learn more.,.,.,.,.,.,.,.,.,.,..
Thanks 🙂👍
Darren must be happy.
Hopefully he enjoyed the video 🙂
Nice one, the only observation i'd make is, while you had both transistors off the board, i'd have checked them both to compare. after all it might have been something as bizarre as a dry joint, if that is actually possible with SMD?
Yes dry joints are certainly possible with SMD. I did measure the transistors but usually you get a reading of around .5 or so, on the original one it was higher across the base and collector I think it was from memory. It's quite hard to measure them off the pcb as they have a habit of pinging off into the wild blue yonder 😂😂
Imagine if you weren’t filming this fix…. It could’ve been months before you found that diode; if at all.
Yes 😂😂😂I was crawling around under the table thinking I must have knocked it off when soldering or something.. I did actually spend about 15 minutes looking for it 😂😂😂
I believe that may be a clamping diode. they are common in automotive relays to send the induced spike back through the coil when the relay coil is de energized
It looks like D1 is the back EMF diode for the relay. The through hole diode I removed at the bottom of the board (marked for a capacitor and alternatively fitted at D12) is for back EMF from the motor. D11 I think they must have re-designed the board layout slightly but forgot to update the silkscreen and the pick and place machine perhaps.
Brilliant bit of investigative work Mick 👏👏😊👍 what is the name of the blue component mat you use please? I'd like to get one for my workshop, thanks 😊
Check out my more recent videos. I've started putting links in the video description to a few bits and bobs of tools I use as I've had a lot of people asking similar 👍
I have the same unit, everything works except the pressure shows only 0.0psi. Tried to fault find but gave up and use a manual pressure gauge!
That would work👍There is a pressure sensor that has 3 or 4 wires coming from it. Could be a faulty sensor or broken wire from the sensor.
i would have just solder the power leads to the motor. and had done with it. aka some of the cheap ones . nothing fancy. i always use a separate gauge for checking pressure.
Yes that would work, but I think it was more fun to try and figure out what the actual fault was and hopefully fix it 🙂
I found you also from Vince!
Nice one Michael. I know vince has given me a shout out on his channel a few times now. He's also a subscriber too, and I'm one of his 😂😂😂
I find it funny you blocked his username from the message you got from him but left it on the ebay listing :) All good to me, just found it funny.
Yeah, I don't usually hide the usernames when I buy stuff it was just it was rather prominent with the message being full screen.
German Automobile huh John.
Nice fix,so I'll let you off on this one 😁
😂😂😂😂
As someone who used to solder professionally for a company that made boards for the telecoms industry (mobile phone masts), I have to say, soldering on that board is shocking!
Yes I did notice the soldering on the power cables wasn't the best..
I came from Vince too!
Nice👍I like Vince we've chatted a few times 🙂
Do you know that with most of them China testers if you hold power/test button for 10 seconds they go into calibration mode, good for zeroing out fly leads etc
Interesting, I didn't know! Thanks for the tip 👍🙂
I think you've got too have been watching my mate vince you even use the same blue mat LOL
😂😂😂😂I'm not getting a yellow one that's for sure!
Those SAE connectors are a pain in the ass. Always worth checking polarity before connecting and have a few reverse polarity adaptors in stock,.
Yes the are a bit of a pain!
If I had a compressor like that i'd bypass that relay and put a switch so you can just turn the motor on or off.
I'm from the days when you plug it into the cigarette lighter in your car it starts up immediately. None of the electronics crap.
Yes that would totally work also! I did something similar with a fly bug zapper a few videos back, the electronics got fried so I just made it "always on" as then at least it was still useable.
@@BuyitFixit I have a similar zapper. Mine is nothing more than a 5v computer fan and black light LEDS. I have another that zaps but is silent. I like the zapping sound.
Yes the one I looked at was pretty much a computer fan and some UV LEDs. My daughter or her husband plugged the wrong power supply it which seems to go straight to the microcontroller as it's designed to be powered from a USB so 12v or whatever straight into the microcontroller 😂😂😂
@@BuyitFixit We both probably have the same zapper. Mine seems to be pretty dumb I'll have to take it apart and see.
Could the diode that had the copper short underneath it (D11) be for the vacant diode location(D12) and the axial diode should be a cap.
Could well be👍. Still a bit of a mystery why D11 is marked in the first place though 🤔
Well done. That protection diode is not living up to its name, I was expecting a lot more damage when the supply was originally reversed. You are obviously not familiar with the blow track before diode, protection method and the recent standards change to the capacitor symbol (now meaning diode), ho, ho.
Thanks Ralph 😂😂😂😂😂
These guides are priceless, is there an easy way to identify these smd components?. I am trying to fix a dead Zanussi electric clothes dryer control board, and I see a transistor that looks short like in your video marked 304 L, looked online and results show variations of 304 without the L, listing P type Mosfet?, uncertain.
I have already replaced the Link chip, LNK304N.
Any help appreciated, been at this forever and a day!
Thanks 🙂Have you tried searching smd yoo need one? I use that site quite a bit.
30:00.. It's a well known fact that million to one chances come up nine out of ten.
Yes😂😂😂I really should play the lottery 😂😂😂👍
That diode across a track is an odd thing! Circuit board goof I would wager. What is the brand of soldering iron you use? Thanks for the info.
Yeah I think its a goof too! It's an Aixun T3A. If you want to see what's inside of one I actually did a repair video on it. The diode in it actually failed totally a few weeks later but I updated the video description explaining what I did and how I fixed it again and it's been fine ever since.
The SOS is inverted (pulling low)
Yes, I thought it must then go through a PNP transistor to switch the LEDs but someone mentioned that even the LEDs actually flash wrong too!
That diode dude is trying to scape lols
Him and his mate... both were trying to escape. I think they were promised a role in a more prestigious device in the factory and ended up in a tyre inflator 😂😂😂
Probably the capacitor on the silkscreen was deemed unnecessary, and the through-hole diode was cheaper at the time than the SMD diode at D12.
Yes that sounds very likely. Thanks for commenting 👍
Diode across track may be for spare use purpose.
Might be, but most manufacturers of things usually omit components to save costs and not add spare ones 😂😂
@@BuyitFixit may be common failure with this diode so kept spare, just guessing 😅
@abhi007n 😂😂😂😂
SOS in a square wave. Almost looks like a pwm signal
Yes it does 😂😂😂
The sos on the led is inverted... lol
I noticed it was inverted on the scope but thought it might go through a transistor so it displayed correctly on the LED. I didn't take a lot of notice of the LEDs at the time.
I have a milwaukee 2792-20 radio charger and the power button does not work, the red led lights up for a bit then shuts off. The charging part works though, it’s just the radio that isn’t working. Could you possibly try and help me?
Unfortunately I've not came across that particular radio before. I have looked at a couple of other models but not that one.
ive found out water got inside of it, would you know anything about going about fixing that? or is it too far gone already@@BuyitFixit
What’s the betting that the former owner has a similar connector on a different device with the opposite polarity - and inadvertently used the wrong lead ?
I'm not sure on that, I was thinking he probably just use the cigarette lighter adapter as most of these types of things usually come with one of those attached and he probably never tried the crocodile clips.
hi mate ive from the NE i bought an ebike a year ago and its stopped working any chance you can have a look ive tried to buy a controller and display for it but the manafacturer says they dont sell spares to the uk and wont honour the Gaurantee if you could help id really appreciate it thanks alot mal
Hi Mal, I used to live in the NE, but I'm over in Cumbria now.
@@BuyitFixit sorry im late getting back mate i was in a motorcycle crash broke my arms and shoulders hand and foot im in a bit of a mess cheers for replying think ill be getting my ebike repaired some how itll be a very long time till im ready to ride a motorcycle again
@@wolfymaceastern6072So sorry to hear. I wish you a speedy recovery 🤞
Help please. DIYer - no expert here. I have a pump of similar construction.
When on, pump splutters and dies with maybe 1 rotation of crank. Relay clicks. Mechanism good but motor notchy.
Power to unit, 12v across board, on switch etc. 12v direct to motor from booster pack (pos and neg) and motor works fine!
6 sm resistors on rear all good.
2 A42 transistors NPNs test good.
M7 diode voltage both ways so bad?
22microfarad capacitor discharged in situ, tested for resistance and dropped to 0v so open circuit and assumed bad? Understand it should trend to infinity.
There's also a relay, I don't know how to test.
Something on the board is defective.
Many thanks 4 help :)
You might need to remove M7 to test it properly, if it's wired across something such as a coil of the relay you might be reading that. If you disconnect the motor, and switch the pump on, does the relay click?
@@BuyitFixit Hi, thanks. Should have thrown it away for £20 new but I'm already in deep aha.
Motor disconnected. Pushed power button and relay buzzes rather than clicks. Maybe 1/2 second. Buzzes again when I turn it off.
So the problem is before the relay I'd think. Sounds odd the relay buzzing. If you want drop me a picture of the board. Channel about page.. contact..for business enquiries. It doesn't show the button on mobile for some reason.
@@BuyitFixit Thanks. I think I'm just going to solder the 12v switch direct to the motor and have done with it. Although I've learnt alot from this exercise, it isn't worth any more of mine time and defo not urs. But before hand, can you share any knowledge about the capacitor. This was one component I struggled with, especially as I don't have a farrad multimeter. Should I get 0v on the diode setting across the terminals?
You can't tell doing that. It's like trying to measure length with a stopwatch. I'd recommend getting one of those component testers like I have. They are around £15 and are very useful for all types of components.
Been rather remiss with your videos of late, just catching up now. Initially I thought when you had the first connection problem, this will be a short vid. Then you found the croc clips reversed, thought same, then of course, why would you do a 40 min vid if you fixed it quick :-) I have one exactly the same, bought it to try to run my Steam Roller but of course need more volume output for it. Had an idea of making a little trailer with a 12v battery and compressor, then run the 1" scale engineer built roller on air, not found the right compressor yet though. 😞
I thought you hadn't commented for a while, good to hear from you 👍I actually emailed Nathan again today just to let him know I was thinking of him and hoping he's doing OK, but not holding my breath on a response
Bit of good news about Nathan. He has passed his full ham exam. Also went to get a bottle of gas for the boat and when he got back he had picked the empty bottle up instead of the full one. He is still active on the ham forum and seems quite well. Don’t think you need to worry about him, except that he is not responding to you :-) or almost anyone else except for radio buddies. He has been out and about on his bike a bit, setting up his radio and getting various contacts. I want to try to get his new call sign in my log. I did manage to talk to him briefly while I set up near Hurst Castle on our last visit to the New Forest
Interesting. I got a Ham radio too, but we didn't manage to get any communication between us as I live in a valley and only have the foundation level. We did manage to ping each other with wspr I think it was.
Which ham forum are you talking about?
I found his call sign G5KCI
First time seeing youtuber oscilloscope saying sos
Yes, same here too! It's actually inverted but you can clearly see the pattern on the lower peaks on the scope 😂😂😂
@@BuyitFixit awesome!
I think that it was pretty obvious it was going to be that transistor at fault.
It was pretty much one of the first things I checked and the readings initially didn't seem bad. I guess I was getting readings from some other components, but it could have easily been burnt contacts in the relay, or the signal from the MCU or a crack in one of the traces...
Onboard spare diode😂😂😂😂
Always good to have a spare 👍😂😂😂😂
In the real world, these tyre inflators are total pants.🤣
Agree, not great but better than nothing in an emergency. I've got a proper compressor that I normally use for tyres but that would be slightly large to keep in the boot of the car 😂😂😂
Agree, and you often find that some of the better ones draw WAY too much from a little cigarette plug. Had a few plugs/sockets melt in the past so now I run mine direct from the battery (fused).
Yes, I've found that the cigarette lighter plugs on them do get a bit hot. Although not hot enough to light a cigarette 😂😂😂
I used one of these once years ago and blew the motor out after 1 tire lol
Just an educated guess that the PCB and components may be similar to another PCB model, and perhaps they run out of PCB's and the mindless
Err-zoned out assembler soldered that sucker in as if it were the other PCB revision or model where the track doesn't exist.
Oh.. and it could be on one side the soldering was inadvertently bridged to where it shouldn't be..
Thing is the place the diode was fitted was marked on the silk screen too...
@@BuyitFixit Yup.. no doubt they used the same silk screen template for all models and or revisions..
Yeah makes sense 👍
Clamping diode
There was one for that across the relay. The 'spare' diode we think was an error as there was a solid track underneath it.
Ring. 12V. Digital. Automatic. Tyre. lnflator. Can. l. Fix. It?
I should video my whole life, so I know where I left stuff!
😂😂😂😂I lose stuff all the time
The D in LCD stands for Display. So you always talk about a Liquid Crystal Display Display.
Yes, I know what LCD stands for. I guess I'm not the only one that calls them LCD displays though as even electronic companies do: www.mouser.co.uk/c/optoelectronics/displays/lcd-displays/
@@BuyitFixit Two wrongs dont make it right. "LCD display" will always be incorrect and is always saying the same thing twice over.
I normally say VFD display too 😂😂😂
@@BuyitFixit 🤣🤣
I had one of these, the dick diode was blown although you couldn't tell from looking at it.
Dick diode? 😂😂😂👍
From my days as a CB rig doctor. The amount of them where the clueless owner just connected it to the battery with no consideration of polarity. A 5p component stopped blowing a £100 cb so we fitted them into the power cable as a precaution.@@BuyitFixit
Seems like lots of those get returned to Amazon. Cheap junk with zero quality control it seems.
Absolutely, I thought that's pretty much what Amazon sells.. 😂😂😂
I get so nervous with one bad habit you have, when you hold the pointy objects in your hand and work with other items, I’ve seen someone in advertently poked themselves in the eye. Just a bad habit,gives me the cringe.
Sorry about that, good news is I've got a backup eye if that ever happens 👍😂😂😂
Did that to myself with extra sharp tweezers my eye was sensitive to everything for damn near a month. Worst feeling do not recommend.
Yeah I can imagine. I've had welders flash a couple of times(like hot sand being poured into your eye and felt like I wanted to pull my eyeballs out) so I know how painful the eye can be.
You've lost a subscriber by blocking my comments.
? I've not blocked any of your comments. If you had links in them I know RUclips automatically blocks them?
Quit saying "EH" literally every 3 seconds, you say EH. I couldn't make it through the first minute of the video.
Sorry, but constructive feedback is the only way you grow, and unfortunately, I'm not willing to follow that path with you. And to be honest, it was partly because you mentioned "my mate Vince"
Oh well, feedback is appreciated. Thanks for commenting.
The Diode is from a previous version, or for the new one but they have forgotten to remove the trace. But in any case in the actual state the Diode is not in use
Thanks for that I was thinking possibly a design issue or something.