I'm disappointed and hope that Yongnuo will stand by its product
344343
I was excited to get my Yongnuo 560 III almost a year ago.  I have used approximately 5-10 times and stored it in its pouch.  I've recently began using the flash and now the ON/OFF button remains pushed in.  It's not due to use, overuse or abuse because I've rarely had the time to use it.  I'm disappointed and hope that Yongnuo will stand by its product.  Accumulating equipment so that I can enjoy my photography is not a light expense.  If it breaks down before even being able to enjoy it, that's even more expensive and disheartening. This product started out great but now it's a dud.
13214
I backed this project on KickStarter after being pleased with another product they made. (TikTok)

Unfortunately this product was a let down from the moment I got it.

The touch recognition, its primary function, we intermittent.  Only portions of the surface area worked and mostly it was on the side of the utensil.  It has a very wide margin of touch so there is very little precision in using it.

Over time it ceases to even function as a pen as the tip kept receding further into the barrel

Then after awhile the touch portion kept unscrewing inside my bag.

The whole product is shoddy and unusable.  It now sits in a drawer with the intent of writing this review someday and attempting to return it.  But I have given up.

It's because of this product I have not backed another project of their and am fairly certain I won't buy another product from them.  Its a shame as I was excited that this company is based in my home city.
4075021
I USED to love the Onkyo product line, was a big fan and spokesperson for the product. My HT-RC180 died exactly 2 years from purchase with a bad HDMI board. I am not the only one that had this problem. If you did a "Onkyo dead HDMI" you'll know what I am talking about. Onkyo agreed to fix it (they had a 45 day grace period after the warranty expired) and took about 2 months to get it repaired; there was a shortage of HDMI boards - that should give you an indication of how many units failed - the root cause 'Sub-par components from a Chinese supplier" - there is a surprise!.
Anyway, after 6 months of operations, the HDMI board failed again.....up crap creek without a paddle now. If Onkyo cannot do a quality control on the initial release and their RMA work, then god help them and don't deserve my business. My only positive note that I can say "it was great while it lasted!" other than than see ya Onkyo and welcome to Denon or HK. All I can hope is that Onkyo can fix their problems.
3189703
This was not a dependable flashdrive for me.  I purchased this from Amazon just over a year ago, used it a little, and then set it on the shelf.  Yesterday I plugged it in, and it wasn't recognized.  I tried 5 different operating systems on 2 different computers, but got no response.  The light flickers on briefly when it is first plugged in, but then goes off.  I attempted to use PNY's Firmware Upgrade Tool(Firmware-Upgrade-Tool-V2-1-8-14_PNY.exe), but the tool couldn't find the drive.

The warranty on this product is only for 1 year.  And the warranty ran out just a few weeks ago...  There are other flashdrives out there with at least a 5 year warranty though.

This may be the last PNY product I will buy.  It appears that there are many others who have had similar experiences with this drive.  At this point I'm not sure if I would recommend this product to anyone.

-----------------------------------------------------------
Update 09-10-2016
I contacted PNY and they had me ship the item to them, after which they sent me another flashdrive in new packaging. This was several months ago.  I haven't yet used this flashdrive, so I don't know if it will exhibit the same symptoms or not.

I do appreciate their extending their warranty by a month or so, I think it was a very nice gesture.  At this point I am not sure if I would purchase another PNY flashdrive.  It will all depend on the reviews that I come across when I am ready to buy another one.

I have upped my review from 1 star to 3 stars, plus lightened up a bit on my original review.
763726
A month in and the screen is dead; It's stuck in a boot loop.

This has turned me off to IBM as a hardware platform to use in the future; I bought this for travel and it has been completely disappointed; also sadly I bought this from a third party seller on amazon and not Amazon direct...hoping I can get this returned
2554146
I had high hopes for the Up after failure with the LarkLife band.  I love the concept and the data output in the app.  BUT...similar to other reviewers my second Up band failed yesterday.  My first band stopped working (syncing, vibrating, etc) after about six weeks.  Hard and soft resets did not work but at least there were indicator lights flashing that something was still alive.  Customer service at Jawbone via email was cumbersome but they sent a replacement band mid-march.  Unfortunately, the replacement band died yesterday (approx. 10 weeks old).  Again, hard and soft resets yield nothing and I don't even get a indicator light.  So I'm averaging a eight week life span.  I'm emailing customer support now so fingers are crossed.
2582618
I had been using the Yongnuo II flashes for the last five years. They usually needed to be replaced every two years or so, but for the price, it was a good deal. This year in late January, I decided to start the year off with all new flashes. It looked as if the II version had been discontinued, so I bought four of these IV versions. After two months, most of them would no longer flash when fired manually from the trigger. So, I started using optical mode, and triggering them with my large handheld flash. After a month of that, none of these four new flashes will fire at all in either manual or optical modes. Even if you push the test button the flash itself, it will not fire. So, after only three short months they are completely non-functional. I can't get a refund, because they did work a bit longer than one month. I have now moved on to a new brand, and will never buy Yongnuo flashes again. Somewhere along these last five years, the build quality has suffered greatly.
1618
Update 7/2015: The replacement battery is now failing well under a year of only occasional use and will not fully charge. The latest information is that the newest batteries show a lot number to the right of the terminals, above the label.  Both batteries I have, the original and replacement, do not have this lot number and no doubt are the old faulty design. There is some discussion that the issue may be related to a lack of proper balance charging of the three internal cells.  Some have devised ways to modify the battery so they they may periodically balance charge the cells. I will be looking into this before my second one irreversibly fails.

Update 10/2014: The replacement battery still seems okay so far. A second issue cropped up, the flash started firing intermittently and progressively got worse. I thought maybe updating the firmware would help, but it didn't change this behavior. Upon close physical inspection, I found that the center pin in the hotshoe was not extending as far as the other pins. Rather than deal with a warranty return I figured it shouldn't be that hard to fix. Long story short, the problem was with the center pin which I subsequently fixed. Since then it's been firing consistently. I'm bumping my review to 3 stars because this flash has great potential, they just need to work on quality control.

Update 9/2014: The vendor, standbyon, was very quick to send out a replacement battery no questions asked. So far so good, but I haven't stressed it enough yet to be sure it's going to continue working. Unfortunately the batteries do not have any sort of serial number or manufacturing date so you can't tell by looking at them if it's from a good batch.

Original Review:

The flash itself seems pretty nice, and I know a firmware update came out recently that addresses some of the issues, but what good is any of it if the proprietary battery is no good.  I really liked the idea of fast recycle times and long battery life, but now I'm wondering if I should have stayed with a system that uses AA's.

The total flashes I got out of it was maybe a couple hundred at most as I wasn't using it heavily. I used it a part of the time for a 3-4 shoots, charging it in between, definitely light duty. Now it's dead and the charger doesn't even recognize the battery. If you look around on the forums, there are *many* people who received bad batteries on the 850/860 and results are mixed to poor on getting the battery replaced under warranty.

I wish I had stressed tested it more during the first 30 days because now it's going to be a hassle to deal with (it been over 60 days). I may try Amazon if the vendor gives me the run around.
3937318
I want to point out what I received was definitely a faulty, malfunctioning product and (based on other reviews) most likely doesn't reflect the standard quality provided by this manufacturer and/or seller. It is for that reason I chose two stars instead of one star, however, because (also based on a quick look through the other reviews) I chose two stars instead of a more neutral three stars because it SEEMS this manufacturer has an unfavorably high rate of producing defective products. This is, of course, just speculation based on very brief research.

I'm a professional and have performed many repairs of all kinds on a wide variety of devices, so you can trust me when I say the installation of the screen was textbook and was completed without any issues. So here are the problems we discovered with the display assembly:

1. After the installation was complete, the owner of the phone commented that the colors were slightly "off" in an almost (but not quite) "dull" sense- for lack of a better description. I wasn't familiar enough with how the original screen looked to verify this, but she is a professional artist and I trust her eye for color and detail. The contrast and dynamic range still seemed typical of a higher-quality mobile display; blacks were still black, the whites were still white, and the color spectrum seemed normal, so we both agreed this was a negligible issue, though if you're as picky as we are about color accuracy and display quality, you may want to continue shopping.

2. Multiple times while testing the device she commented that the phone froze. I determined the phone wasn't actually freezing, but it seemed like the touch input was failing completely for a few seconds every now and then. This problem felt like a "loose cable" kind of issue, so just to be on the safe side I took the phone apart again to make sure all of the cables were securely connected; they were, and the problem persisted afterwards.

3. There appear to be "dead zones" in the touch interface. For example, it's impossible to touch anything in the spot where the backspace button on the keyboard is. Instead, the interface only picks up whatever part of your finger lands just outside this dead zone (because fingers are larger than the precise points you are able to touch), and in her case, this was usually the "M" key when she was typing. This was the final piece of evidence I needed to determine the unit itself was defective and it wasn't another problem with her phone.

Had the unit functioned properly without these manufacturer defects, I'm sure it would have been an excellent replacement for her shattered screen- even if the colors weren't EXACTLY like the original display. I would have given this manufacturer another chance, but due to time constraints, I chose to go with a different one with a slightly better reputation and will be returning this display as soon as the new assembly is installed.

**NOTE**
If for some unknown reason I'm wrong and the new display assembly behaves in the exact same way, I will adjust my review accordingly
2894883
I did my research and had high hopes for this product and purchased several. So far, I've installed them on 2 of the ones with capacitors that were supposed to hold a charge in 2 cars. Here's what happened with both of them:
1. Both would soon loose their memory and changed the date. This is serious, because if a video has the wrong date on it, it probably can't be used as evidence (Isn't this the main purpose of a dash cam?). I'd constantly have to reset the date.
2. The chips became corrupted quickly. Videos were unplayable.
3. Tech support would either not respond or would respond slowly and have the wrong answer to questions not asked.
As a result, I have to trash the 2 that were installed and get rid of the other 2 that are new.
3860279
This is the letter I sent Seidio in response to my experience with their products:

DEAR SEIDIO:

Unfortunately, I am sorry to inform you that you have lost a once-enthusiastic customer.  I have been a loyal customer of Seidio ever since purchasing my first smartphone a year ago.  I have bought holsters, replacement batteries, docks, travel kits.  I have raved about the products and referred my friends.  Unfortunately, the quality of the merchandise is horrible. I purchased two docks for my phone, and they have consistently failed to function within a few months.  I comforted myself with the knowledge the inevitable failure within 6 months would at least be greeted with a willingness on the part of Seidio to exchange the defective merchandise, but apparently that does not apply to replacement merchandise. Therefore when the replacement fails, which it certainly does, Seidio only gives me the "option" to purchase a new one, despite my experience that the item will most certainly fail in a few months.

I should have realized that a 6 month warranty, rather than the standard industry 1-year warranty for technological merchandise, was a warning sign that these products would fall into the "junk" category, but I was hopeful.  A warranty should be a safeguard to the consumer's money, to encourage the consumer to be confident in his purchase, and to help establish a loyal consumer base for the manufacturer.  If it is however a clear indication that the product will most certainly last no longer than a 6 month time frame, this neither inspires consumer confidence nor does it create a good name for the manufacturer, which would in turn lead to a a loyal base of consumer support.

Please note that I will, with the same enthusiasm that I once lauded Seidio products, make sure that as few others as possible make the same mistake I did in trusting Seidio products.  Besides word of mouth, I will make sure to post my experience on all online review sites.

Regretfully, a former customer,
1842626
I bought one and it died within 30 minutes of use. LEDS still work, but the device no longer registers on USB port. I tried the support website and got nothing but a troublesome login that asks for too much information.

It does work seamlessly with Linux V4L drivers and the picture is clear. But burning out the camera in 30 min is a deal breaker.

I'll update if I hear anything back.

Feb 15 2016: I have heard back from TeckNet and they sent me a form email asking for the same information I submitted in the RMA request. Pretty poor customer service.

Feb 16 2016: Another email from TeckNet and they ask that I test the camera that they list as being compatible with Linux V4L drivers as not being compatible with anything other than Windows. Needless to say it doesn't work with Windows either because something inside the camera has fried and it doesn't register on the USB port.

Feb 17 2016: Another email from TeckNet referring me to a web-link for instructions to remove a file. The link takes me to a description of their product and no instructions for anything. I have entered the tech support feedback loop where each request for tech support takes me to a request for more tech support. All I want is a replacement of a defective camera.
4687889
I'm not having much luck with Sena products but I'm trying to like them. Last year I bought a 20S and the connection from the unit the the base didn't work properly. It was scratchy and would cut in and out, so I sent it back. Now I purchased the 10C to utilize all the features. I got it home and charged it overnight. The charge indicator was supposed to change from red to blue to indicate fully charged but the next morning it was flashing blue and red. I unplugged it and tried again. Several hours later it was solid blue, indicating a full charge. I paired it to my phone, GPS and wired into my helmet. Everything seemed fine. I could make and receive calls, hear GPS directions, use my phone for music, use FM radio and record video, both manually and using tagging mode, as well as taking pictures.

When I went for a long ride, I tried the various functions, including video. After taking several short videos using tagging and manual mode, for less than 15 minutes total, the camera shut off and the voice said "battery low". What? The unit was freshly charged and when turned on, indicated that by flashing the LED red 4 times. It was hot outside, so I let it cool for a while. I tried it several more times and was able to get very short videos before it would shut the camera down again. I rode toward the coast, where it was much cooler and tried again but had the same issue. At least the other functions kept working throughout the ride.

I tried reformatting my micro SD card and that didn't help. I called Sena and they had me restore to factory default and fault rest. After that, it was worse. It would only record for about 30 seconds before shutting the camera off. They said I should return it to the vendor or them but if I returned it to them, it would take at least 3 weeks to get a new one, so I sent it back to Amazon. I didn't give it 1 star because the other functions worked well, except intercom pairing. My friend's Sena SMH10 would not pair.

The video and picture quality are pretty good. I have a GoPro Hero3 Black and it does have slightly better quality but this device is smaller, easier to use and as far more functions, which I plan to use most all of. Hopefully I just got another lemon from Sena and the new one I just ordered will operate correctly. We shall see. I'll update this review when the new one arrives and I get a chance to put it through its paces.
3529443
I am so disappointed.  I wanted a quick camera to take to China, without having to lug my big one.  I thought that if I stayed with Cannon, I'd be familiar with their settings.

I have spent MORE time trying to figure out how to get the pictures off of my camera, than I have actually used it.  I have called customer service, but they just tell you the usual things, which for some reason only work sporadically.  One time I thought I'd just reboot my whole computer and the camera.  That worked once.  The next time I couldn't get them off again.  I resorted to taking the memory disk out of the camera and putting it in my Canon Rebel.  That worked, except that it didn't transfer the movies.

Today I thought I would try to load the 57 current pictures onto my phone, since it couldn't connect to my computer AGAIN.  Well, I could only do one picture at a time. Forget that idea.  I'm just going to put the memory disk into my Canon Rebel, and give away my PowerShot.  I'd feel guilty about trying to sell it to someone.

If their connections aren't going to work well, the least they could do is give you a spot to plug in a USB cord.  There is seriously NO direct way to take these pictures off of my camera if for some reason the wifi connection is eternally searching...
3421752
Wanted to warn everyone of a problem--I bought the two-pack of these about 6 weeks ago. After maybe 5 uses one died. The screen is very dim, almost unreadable, and a test flash produces just the smallest of pops, barely visible. If it had happened 2 weeks earlier I could have returned it, but now Profoto says I have to mail it back to New Jersey for warranty repair. No indication of how long it'll take. . .and no offer to mail me a good one, immediately, so I'm not stuck without studio strobes for days or weeks. For this kind of money I'd expected primo quality control and better support. I can't compare them to any other studio strobes since they're my first. . .but I've owned 8 Canon speedlights over the years and never had a problem. Good thing, since it looks like I'm back to them for awhile.  (Update:  Amazon took them back and sent me a new pair overnight.)

Just an update: that bad head worked for a few months, then failed at the beginning of a photoshoot.  It's back at Profoto, being "repaired" under warranty (two months left).  They should have replaced it the first time.  For this kind of money, it's ridiculous to have such bad reliability and I'd recommend you look elsewhere.  Yeah, they're good when they work. . .but they don't always work.

Updating after six months--I tried up update the firmware tonight and now one of my B1s will not work.  Blank screen, or sometimes flickering symbols across the screen.  I updated the other, along with my B2 and Air Remote, so it's not me or my computer.  These damn things are just not reliable.  They've not been banged around; haven't even been used all that much.  My advice: buy something else, by a different manufacturer.

Updating again, just under a year after I first received the second set of B1s.  Another failure!  The same B1 head that was repaired under warranty died on two separate shoots.  It began shutting itself off almost every time I focused the camera.  I thought it was some error of mine but it's happened again and again, despite battery changes, firmware updates and swapping cameras.  These are not reliable devices.  Profoto repaired this head last year but it must be defective, and even if they'll repair it again, it means a couple of weeks without a light.  I wish I'd never bought these damn things.
4783798
I bought for my mom, and it came with a battery problem. It turns off when unplugged from the USB. I called TAO's support and they are shipping a new one to Brazil to the address I designated with no cost.

Whenever it gets here, I'll edit this reivew.

In spite of the problem, the keychain is nice (a little bit heavier though) and the image is OK considering the size of the screen.

Let's wait for the new one.

For now, I would give 1 star for the product since it came broken, but the service seems to be pretty good so far. For that, 3 stars now. Will change that whenever I have the new one.
1526499
Out of the box, the status button didn't work. It's supposed to show battery level and available memory. It's also supposed to activate a laser line to indicate if lens is level with the ground. It's too bad that I bought it in October but didn't open until ski season to find this out. I guess I'll see if the seller will support me.