It was a 300W panel, you were just too far away from the sun. Try it two thirds the way between mercury and the sun and it will be fine. (Thats just a rough estimation, I leave it to somebody else to calculate the correct distance)
It's quite likely these are genuine units that simply failed quality control at the factory, which is why we are seeing variants and different faults between units. Whoever was in charge of discarding them obviously leaked them onto the open market instead for a quick buck. The Shenzhen markets are filled to the brim with this kind of stuff.
Looks like the right conclusion. And things like battery cover screws were never installed at the factory because they failed, so they were finished by whoever got them with whatever was on hand.
Makes the most sense. Especially considering they are rubbing off the original model name / number etc. To make it "as is" out of the blue you-get-what-you-paid-for kind of instrument. I bet these arrive without calibration cert.
I think this is true!! I have bought two the same models multimeter(not that one from video , different one but it doesn't matter actually) . And one was from the official supermarket here in France (a little bit more expensive like 10 euros) but it works perfectly! The same model bought on Aliexpress for 2 euros ! After 4 months stopped working!!I have noticed also that the more expensive one passed some quality control and another one no control nothing! So I bet like 90 % it is true!
But is was only awesome for the generator... If anybody even considers to by a 200$ Meter for 10 bugs a return should be considered as well. You cannot be luky all the time :D
Big OEMs don't bother with defect product handling. They hire a subcontractor to collect the defective end products for safe destruction. This is done in order to prevent unauthorized product sales to the end user. After that the products go to a waste recycling company. This is the way we do it in the company I work for(automotive). Obviously in this situation this line was broken. Someone had decided not to follow procedures. These products were scrapped as defects but never reached the destruction stage.
linagee Nah... “Funky” is spelled with a “k”, so that’s probably not it. I think they meant FUNCTIONABLE (ON/OFF). When Dave pressed the button, he turned off the “functionability” meaning that the meter was not functioning properly anymore. ;)
Pretty simple, these are factory rejected units that made it to the dump and then picked up by salvagers. It's unlikely that someone stole them out of the factory. It's a hit or (likely) miss, sometimes it might just be an led or something not turning on, making an easy repair, sometimes they literally blow up, I play with some high power stuff that are cheap factory duds.
I also get the impression these are test rejects that somehow escaped the factory. I would have thought rejects usually get crushed/destroyed so the company reputation remains intact.
Out of the two, one has working Meter functions, the other has working Process functions. Between them you have a meter that can do everything, but still cannot be relied up, and has a cal certificate written in pencil. I'd be up for the challenge of putting the working parts from both into one meter, if you do decide to give it away to an Australian.
Yeah I'm guessing these are QC rejects. What is probably happening is these are normally sent to be destroyed but someone down the line is intercepting them and then selling them. That's my guess anyway.
@@redsquirrelftw Whats interesting is that they make it to be complete meters. Youd think stuff like this would be caught, at the latest, by the time the PCB has been populated. Kind of makes me think its the factory itself trying to wring some extra money out of them.
Quite happy i didn't get caught up in the woo-woo excitement! Already own enough test gadgets so saved myself the $9 & the ridiculous hassle. Really interesting sitting on the sidelines watching the turmoil of it all though....
It'll arrive in another couple of weeks/month, if it's traveling NZ Post. They're truly bad at the moment sorting parcel delivery ex China possibly due to not actually receiving any kind of payment to do the process of moving the thing from NZ Customs release to the recipient's delivery address.
It's pretty normal for the sellers to have no stock, they just send your order details to a giant fulfilment house somewhere and never even see what they're selling. Same with ebay and what not. They probably had rejects of the $400 gear that were in reasonable condition and then rejects of those rejects. It's also normal for sellers to track how much stuff sells to change the pricing automatically. They know full well people do reviews and attract attention and suddenly the price goes through the roof. No coincidence. Some people will still get the stuff even if it's 5x or 10x just because it was recommended.
I've tried ordering some obviously mispriced items like this but they always turned out to be a scam where they mail a fake package to some random phony address in order to get a tracking number then by the time the package is delivered to the wrong address the seller is long gone and I had to file a claim for a refund from Paypal. I'd like to know what they sent in the fake package but it didn't come to me.
Here's been my theory from the beginning: - some guy either steals/intercepts or finds a pallet of these (possibly returns to the factory?) - guy has no idea what they are, so tells his buddy at the China.com market to make 20 listings of these things and assumes nobody else will know either, so sets a low price similar to cheap multimeters - get some cheap labor to scrub off model information - they get a few orders, ok great, they send them out - orders suddenly flood in and they freak out and cancel all orders, realizing they're worth a lot more - leftovers reappear in lower quantities with prices hugely inflated ($150) - some are defective (see factory return theory), so now some people end up with $150 broken units
I would like to see a teardown of this thing, maybe there's something visibly wrong with it? Does it have original parts or their numbers were also scratched off?
First video: "That's great! I want one!" This video: "That sucks! I don't want one..." Almost sorry I missed out on the first ones because I love to tinker with things and make them right.
Oh yeah these rubbish, I know one thing or two about them… What these sellers do is visit one of the several ewaste dumps in China, there's one in Guangzhou, one in Shenzhen, and one in Hong Kong. There's another in Taiwan as well. Often or not, they acquire large batches of used or rejected rubbish and sell them for cheap. Some are hidden gems, some are just rubbish. Another method that's illegal would be smuggling the rejected pile out of the factory. It's likely the former. However, the state is smacking down on these ewaste dumps. Say what you like about pollution, China used to consume 98% of the world's ewaste, people burn it down to get the tiny bits of gold which had a massive impact on the environment. I buy plenty of these. Got some high power illuminators last year, one blew up and cut my power out, the other didn't turn on and blew up too, the third one worked fine. Depending on what it is, do be careful…
That is surprising to see that a process meter that cost $9 works at all, considering my Fluke process meter for work cost me $1000. Though obviously the Fluke dose not have terrible calibration or awful build quality that this thing has. This is still interesting to see.
Is it possible that someone over there ended up with a load of unfinished units that they then haphazardly brought to "working" order in order to sell?
Is not that bad for 9 Bucks. Try to buy a plastic case a LCD and 2 probes (same quality). I bet is way over 9$. Also the disk with the virus is good to test your antivirus.
lol the virus is a nice touch haha. Maybe this is a new way of spreading viruses, sell cheap gear on ebay and have the virus come shipped with the software. :P
I bought a USB OBDII scanner and it came with like 5 different expensive software packages, complete with cracks/keygens. I'm sure there's some delicious viruses in them too
@@voltlog True. Knowing china though... There's probably something nasty in it. I don't have it anymore but virustotal would be a neat thing to try with some of them
@@HighestRank from the previous teardown the LCD assembly seems to he clipped on nicely to the board and you wouldn't need to remove it to troubleshoot the interesting stuff.
Wouldn't the boards be auto tested as soon as populated with components and before going into a case? Makes no sense that they would be fully assembled and then tested then sold off as faulty. Plus by that stage the makers name would be on so would a reputable company let faulty stuff out with their name on? All very bizarre.
Was that, the masteck with the badge rubbed out? This was that masteck device, that was going, with the masteck rubbed out on it. Like we said at time, these are probably rejected mastech devices. ie meaning, they all have a fault, meaning they cannot be sold at retail. Personally i am amazed someone like you would buy such faulty goods. I suppose you have your reasons.
having dealt with ali for some years its probably factory rejects due to accuracy.....pot luck against the overpriced 150 200 usd they are asking for if those expensive units are actually in spec????
Iam a patreon and placed my order from cozy and they canceled my order 3 days later! Said they had to send there stock back because of a security problem.
I really wonder why are people so stupid to go to buy from online market place like the shit Alibaba while the original manufacturing factory website is on the web and they sell cheaper and more qualified products with services ??!!
good question! actually I have ordered some chips from RS Components and at the end my shipping was fro free and paid less than on Aliexpress!! And chips from Ali I got a refund from Ali because they didn't work! It was a lesson for me!
What’s the point of $$$$$$$$kit to check your $cheap bit of kit when you need $$$$$$$$$$$$$$$$$$$$$$$$$kit go compare and calibrate you’re $$$$$$$$kit?
We all have bought some great stuff form China (but also a lot more crap), but the good stuff is usually because quality control is enforced by a non-Chinese customer of a Chinese manufacturer that rejects the stuff that is bad. But in China, the rejects often find a market, not the dumpster, and I assume often without the original designer/customer even knowing. Now I wouldn't trust these units even from original manufacturer which is not fair to the legitimate and properly tested and calibrated product. But I'm just turned off by this kind of stuff from China. I'm an EE who has designed industrial monitoring equipment and I've used a Hioki 7011 field meter to do exactly what this Chinese $9 thing does. It is my neatest and most accurate hand held meter because it is a field calibration unit for industrial 0-10V, 4-20mA systems. But they were like $1500 new. I got my at auction for about $100. I will never part with it.
It's not the spec being a bit out that is the main issue, it's obvious faults. Basically two separate meters in one, each meter has a different half faulty. Rather straight forward to measure voltage/resistance of various parts within the two meters to figure out what is not right. Then do some reflow to transfer parts over to see what fixes the issues. Do I think Dave would do it ? No, it's a lot of work for something that only cost him $18. I'd be willing and able to do this, however they are Dave's meters not mine. I suspect most Engineers will bin these, rather than give them to others who want them for parts to salvage or to repair. thm_w on the forum is doing some reverse engineering on the meters, found R6 18k resistor missing in the PSU section.
It sure paid NOT to be a patron. You would pay $9 and get junk. Poor connections, poor readings. The last thing you need is a test instrument that doesn't work.
As a Chinese, shame on these dishonest seller. I buy parts from Taobao (domestic version Aliexpress), when I encountered such situation I'd make complaints to Taobao. If the seller refuse to ship for any reason after I paid, Taobao will order him to pay a compensation, depending how much have paid, it varies from 5 to 30CNY. But no good way to battle against fake, that's why they do it all around the world. One exception is when you insist and keep a tough attitude, they afraid someone won't be bored with getting authorized analysis reports and filling lawsuits against them. In Chinese law, selling fake will pay at least 500CNY or 3x customer paid as compensation. Another ridiculous thing is when you imply you can get to their physical location to ask for refund, you'll have a much more friendly talk. For foreigner outside China, best way is to confirm the details with the seller before checkout. If mismatch, you should negotiate with the seller friendly until he concede. Then everything is easy, you can ask for refund and make complaint to Aliexpress with screenshot of the chat. REMEMBER: NEVER ASK THE SELLER TRANSFER MONEY TO YOU DIRECTLY, THEY CAN DENY AGAINST THE COMPLAINT THAT YOU DEMAND EXTORTION. Even the complaint is not successful, you can rate the item with negative comment to avoid someone else being spoofed. If you still angry, you can call local Consumer Council to make complaint. Number is +86 Area-code 12315. e.g. Shenzhen: +86 755 12315. English is generally acceptable. From my experience the Consumer Council won't make much sense for you, but it's troublesome for the seller especially dealing with foreigner complaints. Sorry for the damn Chinese scammers, we ordinary Chinese hate them even more. The scammers are greedy for fame and gains, lie and cheat is their daily work, from food to academic....
but the question is how can you regnognise them on Ailexpress ? WHen you are a foregiener and thousands kilometers from the factory or a seller? How can you know which seller is honest or not or what you will receive?
generally factory seller with huge registered capital is more reliable, the company registration information can be verified by Tianyancha. Individual seller sometimes so mean, until you push the incident to government bureau, really disgusting for domestic buyers too!!!
@@carbonhelium3684 the good thing about Aliexpress is that they refund you straight away. I have bought some IC chips for my project and it was faulty so they refund me immidatelly but not through seller because he wanted to discuss (but I didn't want hahaha) . I have noticed that if I buy from trusted company everything works as it should but from smaller sellers and companies you never know what you get.
Most likely these were all QC rejects from the official manufacturer, marked for destruction, hence the scraped-off legends and 'pot luck' aspect. Still a bargain though...
The source is input/output switchable across its range. You can see it says input on the display. The specs are supposed to be better compared to the multimeter section in that range.
They look like manufacturing rejects. These companies make tens of thousands so generally do not try to repair any that fail FAT. Often they sell them off for scrap and they end up on sale. Probably still worth getting one if you are willing to try fixing it.
Dave, I'd be asking for some money back on those guys (even though you knew they'd be dodgey). I'm sure the seller will come forward with a few bucks. If they sold if for $10, they probably got them for $0-2
It makes me wonder, if you paid the premium price for the meter, would it BE calibrated? For $10.00 US, it may be necessary to have it calibrated: For $150.00 US, it may already be calibrated, and the service fee for the calibration is also marked up. I don't know, but I'm just trying to justify the 1500% mark up, for virtually the same meter.
i bought some little electronic thing i needed off ebay, seller listed as shipping from usa, and of course it came from china so i left a negative review and they begged for me to change it to get the item for free. i really should have, it was like $25 or so.
the Apprentice Meter...make em double check twice. those turds probably failed quality control and got sold out the back door to 3rd persons who scraped the name off and resold them. i wouldn't use that on my car let alone my home.
@@_--_--_ Good question. With Aimo not being able to contain their quality assurance, they have ended up with a very damaged brand. QA should have been physically destroying the meters that do not meet specs. Sink a drill bit through the top of the case untill it comes out the other side should do it. Where do they go from here?
Quick question, do you accept items for people to use for a video to show what's wrong with the item and fix it to send back to the person? If not no worries, I just have this induction coil that stopped working, and I thought it might make for good content to get you to look it over for me and maybe figure out what happened with it and how to fix it. I get my coil running and you get a video to put on your channel. Anyway, if not no worries, just a thought.
![Lil Uzi Vert - Chill Bae [Official Music Video]](http://i.ytimg.com/vi/D7F42F_JM3U/mqdefault.jpg)
that must be the meter the Chinese use to rate batteries with........listed 6000mah reality 200mah
300 watt flexible solar panel ....(35W)😂😂
6000mAh is the total life of the battery. /s
It was a 300W panel, you were just too far away from the sun. Try it two thirds the way between mercury and the sun and it will be fine.
(Thats just a rough estimation, I leave it to somebody else to calculate the correct distance)
Dont forget the 400 kV high voltage modules. (actually 15kV)
And the ebay 7000 lumens projector....
Reality 35 lumens, can only see the image on the dark side of the moon
It's quite likely these are genuine units that simply failed quality control at the factory, which is why we are seeing variants and different faults between units. Whoever was in charge of discarding them obviously leaked them onto the open market instead for a quick buck. The Shenzhen markets are filled to the brim with this kind of stuff.
This makes more sense than any other concept I've come across so far.
Looks like the right conclusion. And things like battery cover screws were never installed at the factory because they failed, so they were finished by whoever got them with whatever was on hand.
Makes the most sense. Especially considering they are rubbing off the original model name / number etc. To make it "as is" out of the blue you-get-what-you-paid-for kind of instrument. I bet these arrive without calibration cert.
I think this is true!! I have bought two the same models multimeter(not that one from video , different one but it doesn't matter actually) . And one was from the official supermarket here in France (a little bit more expensive like 10 euros) but it works perfectly! The same model bought on Aliexpress for 2 euros ! After 4 months stopped working!!I have noticed also that the more expensive one passed some quality control and another one no control nothing! So I bet like 90 % it is true!
Previously: "This is a great meter for $9!!!" BUY BUY BUY
Now: "This meter is dodgy AF!!" SELL SELL SELL
The joys of a sample size of one.
Stonks!
Dave would be great at trading stocks.
But is was only awesome for the generator... If anybody even considers to by a 200$ Meter for 10 bugs a return should be considered as well. You cannot be luky all the time :D
Buy high, sell low.
Big OEMs don't bother with defect product handling. They hire a subcontractor to collect the defective end products for safe destruction. This is done in order to prevent unauthorized product sales to the end user. After that the products go to a waste recycling company. This is the way we do it in the company I work for(automotive). Obviously in this situation this line was broken. Someone had decided not to follow procedures. These products were scrapped as defects but never reached the destruction stage.
8:45 "You press function and it's going nuts!" (Maybe FUNC meany FUNKY and not FUNCTION? :-) )
linagee Nah... “Funky” is spelled with a “k”, so that’s probably not it. I think they meant FUNCTIONABLE (ON/OFF). When Dave pressed the button, he turned off the “functionability” meaning that the meter was not functioning properly anymore. ;)
@@TheCrazyStudent How many chinese sellers can spell everything correctly tho? hmm
It would be interesting to know what is causing the wide variation in the performance of these devices. Faulty component(s), programming, assembly?
Pretty simple, these are factory rejected units that made it to the dump and then picked up by salvagers. It's unlikely that someone stole them out of the factory. It's a hit or (likely) miss, sometimes it might just be an led or something not turning on, making an easy repair, sometimes they literally blow up, I play with some high power stuff that are cheap factory duds.
I also get the impression these are test rejects that somehow escaped the factory. I would have thought rejects usually get crushed/destroyed so the company reputation remains intact.
Dexxter Maybe at HP or Tektronix...
@Trevor Yeah that could work too, depends on where the thing is made. If China, then yeah; if not, it's taken from one of these dump sites.
Out of the two, one has working Meter functions, the other has working Process functions.
Between them you have a meter that can do everything, but still cannot be relied up, and has a cal certificate written in pencil.
I'd be up for the challenge of putting the working parts from both into one meter, if you do decide to give it away to an Australian.
I'm so glad I couldn't find one. Thanks Dave!
Would you like to have one decent Process calibrator ?
As said on the last video:
Thrown away from the factory stuff, faulty production.
Unless it IS the production stuff.
I agree, must be QC rejects sold as scrap
@@petaks01 Or someone went dumpster diving and decided to sell the meters as their own.
Yeah I'm guessing these are QC rejects. What is probably happening is these are normally sent to be destroyed but someone down the line is intercepting them and then selling them. That's my guess anyway.
@@redsquirrelftw Whats interesting is that they make it to be complete meters. Youd think stuff like this would be caught, at the latest, by the time the PCB has been populated. Kind of makes me think its the factory itself trying to wring some extra money out of them.
Send one my way Dave, I don't mind paying shipping... could be a good repair project video.
The last time I was this early, Solar Roadways actually generated its own power.
These look like reject units that someone fished out of a dumpster.
Yep. You're right.
New method of ISO 9006: don’t put any model data on the kit until it’s passed QC.
Quite happy i didn't get caught up in the woo-woo excitement! Already own enough test gadgets so saved myself the $9 & the ridiculous hassle. Really interesting sitting on the sidelines watching the turmoil of it all though....
3:34 I cannot stop crying after reading this tragic story.
Somebody start a GoFundMe campaign for Sandy immediately.
I wish mine had actually turned up.
It'll arrive in another couple of weeks/month, if it's traveling NZ Post. They're truly bad at the moment sorting parcel delivery ex China possibly due to not actually receiving any kind of payment to do the process of moving the thing from NZ Customs release to the recipient's delivery address.
I wish that I had got in before the price of them all skyrocketed.
Doesn't this call for a teardown and attempt at a fix? Or atleast a "wth did you think you were doing when you designed this!"
After this gold rush the Chinese are now going to look even harder for rejects to sell.
Unfortunate. But true
You could part it out for more than you bought it for. Still worth it.
I connected mine to a 240V outlet to see what would happen. It works fine now.
OlympusHeavyCavalry probably Dave damaged his when he forced his probes into the receptacles instead of pushing gently.
🤣🤣🤣😁😂😎
On the second meter test are your probes in the correct position? Current sourcing. Check around the 10 minute mark.
The old motto of if it seems to good to be true, rings very much true here.
It's pretty normal for the sellers to have no stock, they just send your order details to a giant fulfilment house somewhere and never even see what they're selling. Same with ebay and what not. They probably had rejects of the $400 gear that were in reasonable condition and then rejects of those rejects.
It's also normal for sellers to track how much stuff sells to change the pricing automatically. They know full well people do reviews and attract attention and suddenly the price goes through the roof. No coincidence. Some people will still get the stuff even if it's 5x or 10x just because it was recommended.
I've tried ordering some obviously mispriced items like this but they always turned out to be a scam where they mail a fake package to some random phony address in order to get a tracking number then by the time the package is delivered to the wrong address the seller is long gone and I had to file a claim for a refund from Paypal. I'd like to know what they sent in the fake package but it didn't come to me.
Here's been my theory from the beginning:
- some guy either steals/intercepts or finds a pallet of these (possibly returns to the factory?)
- guy has no idea what they are, so tells his buddy at the China.com market to make 20 listings of these things and assumes nobody else will know either, so sets a low price similar to cheap multimeters
- get some cheap labor to scrub off model information
- they get a few orders, ok great, they send them out
- orders suddenly flood in and they freak out and cancel all orders, realizing they're worth a lot more
- leftovers reappear in lower quantities with prices hugely inflated ($150)
- some are defective (see factory return theory), so now some people end up with $150 broken units
Wry good possibility. These are still available on alibaba for $150-$200 now
I would like to see a teardown of this thing, maybe there's something visibly wrong with it? Does it have original parts or their numbers were also scratched off?
First video: "That's great! I want one!"
This video: "That sucks! I don't want one..."
Almost sorry I missed out on the first ones because I love to tinker with things and make them right.
Oh yeah these rubbish, I know one thing or two about them…
What these sellers do is visit one of the several ewaste dumps in China, there's one in Guangzhou, one in Shenzhen, and one in Hong Kong. There's another in Taiwan as well. Often or not, they acquire large batches of used or rejected rubbish and sell them for cheap. Some are hidden gems, some are just rubbish. Another method that's illegal would be smuggling the rejected pile out of the factory. It's likely the former. However, the state is smacking down on these ewaste dumps. Say what you like about pollution, China used to consume 98% of the world's ewaste, people burn it down to get the tiny bits of gold which had a massive impact on the environment.
I buy plenty of these. Got some high power illuminators last year, one blew up and cut my power out, the other didn't turn on and blew up too, the third one worked fine. Depending on what it is, do be careful…
Did you compare the pcb's in the meters? I was wondering if there might be components missing or something.
ForestCat_Peter try again next Tuesday.
That is surprising to see that a process meter that cost $9 works at all, considering my Fluke process meter for work cost me $1000. Though obviously the Fluke dose not have terrible calibration or awful build quality that this thing has. This is still interesting to see.
Is it possible that someone over there ended up with a load of unfinished units that they then haphazardly brought to "working" order in order to sell?
Nate Tronerud take a shot every time Dave says “fell off the back of a truck”.
Yeah you know how it goes if it sounds too good to be true... I'm glad I didn't buy one of these but I'm very happy with the Aneng 8009
Those failed QC...
You've got to ask yourself are you better off with lots of dodgy test equipment or just one good meter
It's pretty obvious what happened here. This is a batch of units that failed QC and someone retrieved them from the skip and is selling them!
Is not that bad for 9 Bucks. Try to buy a plastic case a LCD and 2 probes (same quality). I bet is way over 9$. Also the disk with the virus is good to test your antivirus.
lol the virus is a nice touch haha. Maybe this is a new way of spreading viruses, sell cheap gear on ebay and have the virus come shipped with the software. :P
I bought a USB OBDII scanner and it came with like 5 different expensive software packages, complete with cracks/keygens. I'm sure there's some delicious viruses in them too
@@iamdarkyoshi but keygens/cracks are often misslabeled as viruses so I'm not sure we have any confirmation that really a virus.
@@voltlog True. Knowing china though... There's probably something nasty in it. I don't have it anymore but virustotal would be a neat thing to try with some of them
@@voltlog technically still malicious, but maybe not directly to the user :p
Targetting western electrical engineers with such bargain is pretty smart attack vector, hoping to get some juicy industrial espionage.
Its probably got a cheap radio inside; wired to the sockets, switch and LCD to look like a meter. Total parts and labour cost - 3 bowls of rice :)
😂🤣🤣🙃😂🤣
Because I missed out first time...I'm pleased to see this pair turned out a bit shite )) Made me feel better.
yeah your buying shenzen rejects from qa guys in factory, they put them in a sack and sell in the market
No attempt to repair it? Would be interesting to see if some of these defects are as simple to fix as a dry solder joint or missing component.
Gameboygenius unfortunately sometimes disassembly borks the LCD display contact strip too badly for reassembly.
@@HighestRank from the previous teardown the LCD assembly seems to he clipped on nicely to the board and you wouldn't need to remove it to troubleshoot the interesting stuff.
So the sellers are now charging full price for faulty goods? What happens when they start getting return demands?
@Kevin Counihan What if I file a claim against them with paypal or my bank? I get to keep the product and my money back?
Wouldn't the boards be auto tested as soon as populated with components and before going into a case? Makes no sense that they would be fully assembled and then tested then sold off as faulty. Plus by that stage the makers name would be on so would a reputable company let faulty stuff out with their name on? All very bizarre.
I "WAS" bummed out when I couldn't find one
I'm with a lot of other people take a shot at fixing one and see if it shi$s or gets
Was that, the masteck with the badge rubbed out?
This was that masteck device, that was going, with the masteck rubbed out on it.
Like we said at time, these are probably rejected mastech devices. ie meaning, they all have a fault, meaning they cannot be sold at retail.
Personally i am amazed someone like you would buy such faulty goods. I suppose you have your reasons.
having dealt with ali for some years its probably factory rejects due to accuracy.....pot luck against the overpriced 150 200 usd they are asking for if those expensive units are actually in spec????
For 2.56 USD you can get the dt9205A which Ive found to be surprisingly good so far
True, but the real potential value of these meters was the high accuracy voltage and current outputs.
Wun Hung Lo is my preferred manufacturer of precision instrumentation
Iam a patreon and placed my order from cozy and they canceled my order 3 days later! Said they had to send there stock back because of a security problem.
Someone else on the forum reported that too. Strange that I got mine.
EEVblog Someone must have alerted them to the virus!
Funny excuse! Give a positive reason like they care about the random internet buyer :)
They ran out of sandpaper for the embossed model number.
Don't take paypal as refund!
I really wonder why are people so stupid to go to buy from online market place like the shit Alibaba while the original manufacturing factory website is on the web and they sell cheaper and more qualified products with services ??!!
good question! actually I have ordered some chips from RS Components and at the end my shipping was fro free and paid less than on Aliexpress!! And chips from Ali I got a refund from Ali because they didn't work! It was a lesson for me!
Initially I was a bit sad that I didn't get one... Now I am a bit relieved. Only now I discovered that these were not good :-)
whats the point of a $cheap bit of kit when you need $$$$$$$kit to check/compare confirm that is working correctly(and if so for how long???)
What’s the point of $$$$$$$$kit to check your $cheap bit of kit when you need $$$$$$$$$$$$$$$$$$$$$$$$$kit go compare and calibrate you’re $$$$$$$$kit?
@@EndOfLineTech so where does it end?
@@fradd4045 N.I.S.T. lol
We all have bought some great stuff form China (but also a lot more crap), but the good stuff is usually because quality control is enforced by a non-Chinese customer of a Chinese manufacturer that rejects the stuff that is bad. But in China, the rejects often find a market, not the dumpster, and I assume often without the original designer/customer even knowing. Now I wouldn't trust these units even from original manufacturer which is not fair to the legitimate and properly tested and calibrated product. But I'm just turned off by this kind of stuff from China.
I'm an EE who has designed industrial monitoring equipment and I've used a Hioki 7011 field meter to do exactly what this Chinese $9 thing does. It is my neatest and most accurate hand held meter because it is a field calibration unit for industrial 0-10V, 4-20mA systems. But they were like $1500 new. I got my at auction for about $100. I will never part with it.
10:32 I thought that 3 last positions on rotary switch are for output functionality? Yet you seem to use them as input
Thanks Dave for this update. Now I'm happy didn't get one 😅
Oh boy, malware is my favorite!
3:30 How does he dare to leave negative feedback after not receiving the product he had ordered and pay for! What a bastard!! XD
could be a good subject for analysis and repair series?
Tamás Gulyás “off the cuff” means it’s a potluck potential- many moons from now.
What about you fixing those units dave, and show where the problems are?
It would help your viewers that bought them :-)
You'd still need expensive test gear to show they were actually operating within spec, so it would be kinda pointless.
It's not the spec being a bit out that is the main issue, it's obvious faults.
Basically two separate meters in one, each meter has a different half faulty.
Rather straight forward to measure voltage/resistance of various parts within the two meters to figure out what is not right.
Then do some reflow to transfer parts over to see what fixes the issues.
Do I think Dave would do it ? No, it's a lot of work for something that only cost him $18.
I'd be willing and able to do this, however they are Dave's meters not mine. I suspect most Engineers will bin these, rather than give them to others who want them for parts to salvage or to repair.
thm_w on the forum is doing some reverse engineering on the meters, found R6 18k resistor missing in the PSU section.
What kind of mat do you use to protect your table ?
My Fluke Meter and first wife both ended up in another mans hands.......GOOD news is I found another Fluke meter at a garage sale cheap!
What happened to the "Don't turn it on. TAKE IT APART" ?????
D Pyles on another Davechannel, @ another Davetime.
It sure paid NOT to be a patron. You would pay $9 and get junk. Poor connections, poor readings. The last thing you need is a test instrument that doesn't work.
Any news from the custom LCD µSupply ?
I'll stick with Fluke thank you! Alibaba ha ha!
Still better and cheaper than Vion :D
will you try to figure out whats wrong with them? why they are so wierd?
The cheap ones probably failed the QC - you generally get what you pay for ....
Can you do a comparison video on the internals?
As a Chinese, shame on these dishonest seller.
I buy parts from Taobao (domestic version Aliexpress), when I encountered such situation I'd make complaints to Taobao.
If the seller refuse to ship for any reason after I paid, Taobao will order him to pay a compensation, depending how much have paid, it varies from 5 to 30CNY.
But no good way to battle against fake, that's why they do it all around the world. One exception is when you insist and keep a tough attitude, they afraid someone won't be bored with getting authorized analysis reports and filling lawsuits against them. In Chinese law, selling fake will pay at least 500CNY or 3x customer paid as compensation.
Another ridiculous thing is when you imply you can get to their physical location to ask for refund, you'll have a much more friendly talk.
For foreigner outside China, best way is to confirm the details with the seller before checkout. If mismatch, you should negotiate with the seller friendly until he concede. Then everything is easy, you can ask for refund and make complaint to Aliexpress with screenshot of the chat.
REMEMBER: NEVER ASK THE SELLER TRANSFER MONEY TO YOU DIRECTLY, THEY CAN DENY AGAINST THE COMPLAINT THAT YOU DEMAND EXTORTION.
Even the complaint is not successful, you can rate the item with negative comment to avoid someone else being spoofed.
If you still angry, you can call local Consumer Council to make complaint. Number is +86 Area-code 12315. e.g. Shenzhen: +86 755 12315. English is generally acceptable. From my experience the Consumer Council won't make much sense for you, but it's troublesome for the seller especially dealing with foreigner complaints.
Sorry for the damn Chinese scammers, we ordinary Chinese hate them even more. The scammers are greedy for fame and gains, lie and cheat is their daily work, from food to academic....
but the question is how can you regnognise them on Ailexpress ? WHen you are a foregiener and thousands kilometers from the factory or a seller? How can you know which seller is honest or not or what you will receive?
generally factory seller with huge registered capital is more reliable, the company registration information can be verified by Tianyancha. Individual seller sometimes so mean, until you push the incident to government bureau, really disgusting for domestic buyers too!!!
@@carbonhelium3684 the good thing about Aliexpress is that they refund you straight away. I have bought some IC chips for my project and it was faulty so they refund me immidatelly but not through seller because he wanted to discuss (but I didn't want hahaha) . I have noticed that if I buy from trusted company everything works as it should but from smaller sellers and companies you never know what you get.
You have to buy 10 to get one that works... :-)
Fell off the back of a truck in Australia :P... plot thickens
i tried every link to try get one but didn't mange to. Even if it was dodgy, i would still rather have gotten one just for the entertainment value.
Most likely these were all QC rejects from the official manufacturer, marked for destruction, hence the scraped-off legends and 'pot luck' aspect. Still a bargain though...
As seen from the first one these are factory duds. Bought stuff like this before. Sometimes it works, sometimes not.
Dave, I think I will keep my Fluke 741 instead of getting one of these bargain meters.
Dave I'm so glad your meters don't work right!! Now we get a repair video right!?! PLEASE!
10:20 Out on current. Well yeah, output to output connected gives you wrong numbers. :-)
Oops...
The source is input/output switchable across its range. You can see it says input on the display. The specs are supposed to be better compared to the multimeter section in that range.
@@_--_--_ You could be right, can't find a manual for it.
Nope, note the LCD says INPUT.
@@EEVblog Noted. But on the same connections does feel a bit odd to me!?
They look like manufacturing rejects. These companies make tens of thousands so generally do not try to repair any that fail FAT. Often they sell them off for scrap and they end up on sale. Probably still worth getting one if you are willing to try fixing it.
Still waiting to see if mine turn up, ordered them a few hours before the video, so more or less hopeful xD
Wonder did anyone pay the $150 or whatever it was they went up to?
I think the entire point of this video was to drive the prices back down to $9..!
Dave, I'd be asking for some money back on those guys (even though you knew they'd be dodgey). I'm sure the seller will come forward with a few bucks. If they sold if for $10, they probably got them for $0-2
When you calibrate the rest with the broken one...
It makes me wonder, if you paid the premium price for the meter, would it BE calibrated? For $10.00 US, it may be necessary to have it calibrated: For $150.00 US, it may already be calibrated, and the service fee for the calibration is also marked up. I don't know, but I'm just trying to justify the 1500% mark up, for virtually the same meter.
Hah, i hit the yaseri one too. Not only did i get bait and switched, but they're somehow now spamming my DHGate SYSTEM messages with ads.
Express Shipping was $45 to the USA. Thanks but no thanks, Alibaba.com
Looks like i lucked out by not impulsively buying this. Once dave recomends something it becomes unobtainium anyways. Lol
As it’s coming up to Bonfire night, can I suggest blowing one up in glorious style, with an absolutely silly amount of “fun-powder” !! 🤪💥🔥✨
good enough for Australia, lol xD
Definitly QC fails. Prolly can fix them :)
I’ll stick with my fluke 789 thanks
i bought some little electronic thing i needed off ebay, seller listed as shipping from usa, and of course it came from china so i left a negative review and they begged for me to change it to get the item for free. i really should have, it was like $25 or so.
the Apprentice Meter...make em double check twice.
those turds probably failed quality control and got sold out the back door to 3rd persons who scraped the name off and resold them.
i wouldn't use that on my car let alone my home.
Todesgeber not on what to use but by whom; stocking stuffer for Sagan’s toy box.
Well, I did pay 40$, and nothing shipped, just a fake tracking number :P
so unfortunate we are, not able to reach one of these puppies!
hang on it seemed too good to be true? that said, the components seemed pretty smick.
The price is £186.53 now on Aliexpress
So pretty much retail price. The question is then, are those the retail ones or the qc rejects.
@@_--_--_ Good question. With Aimo not being able to contain their quality assurance, they have ended up with a very damaged brand. QA should have been physically destroying the meters that do not meet specs. Sink a drill bit through the top of the case untill it comes out the other side should do it.
Where do they go from here?
Quick question, do you accept items for people to use for a video to show what's wrong with the item and fix it to send back to the person? If not no worries, I just have this induction coil that stopped working, and I thought it might make for good content to get you to look it over for me and maybe figure out what happened with it and how to fix it. I get my coil running and you get a video to put on your channel. Anyway, if not no worries, just a thought.
Sorry, no I don't.
@@EEVblog okay thanks
Yeah, I still don't want one.