My screen keeps flickering now?I bought one and the audio didn't work, so I returned it and got a new one(audio still doesn't work, but I'm just going to plug in external speakers). But after a small amount of use with the first one, and immediately with the second one, when I plug it into my tv the screen flickers to black continually. I have checked every plug and connection multiple times and everything is tight and secure so I don't understand what the problem is? It worked correctly at one point, now it flickers constantly, to the point that it won't be worth keeping if I can't fix it. Can anyone help? I sent an email to the company, but I would like opinions from here as well. Thanks! My screen keeps flickering now?I bought one and the audio didn't work, so I returned it and got a new one(audio still doesn't work, but I'm just going to plug in external... » Read More My screen keeps flickering now?I bought one and the audio didn't work, so I returned it and got a new one(audio still doesn't work, but I'm just going to plug in external speakers). But after a small amount of use with the first one, and immediately with the second one, when I plug it into my tv the screen flickers to black continually. I have checked every plug and connection multiple times and everything is tight and secure so I don't understand what the problem is? It worked correctly at one point, now it flickers constantly, to the point that it won't be worth keeping if I can't fix it. Can anyone help? I sent an email to the company, but I would like opinions from here as well. Thanks! « Show Less
2022224
Yea im not sure on that. If a second one still giving you problems it could also be your computer or tv outlet. Mine work fine since the beginning and still rolling. I use it everyday since I don't have cable I just now watch everything on the internet. Sorry I cant help you on this one.
2022225
Do you have the Mini USB cable (Power) connected? If yes, the only other thing that comes to mind is that the frequency of the speakers is messing with the picture. Unplug the external speakers from the device and then try it again.
777724
I found the best source for help with this product was to call their customer support line and talk to a live person. They were great and helped me resolve issues like yours when I bought this product.
2022226
I never used the audio option of the Hammerhead, besides plugging PC speakers to the PC audio port would work far better. As for the flickering, lower your resolution to the next highest. Sometimes the resolution will only flicker when you first turn on the computer, let it flicker until you reach the desktop screen. Try different resolutions. Only lower the resolution, if it continues to flicker at the desktop. In other words, it could say "UNSUPPORTED RESOLUTION" while the Windows logo shows at the beginning of the start-up sequence, but works fine at the desktop screen.
2022227
I had no problem with my hammerhead-- great video & audio w 30' ft hdmi 1. For flickering screen, confirm all wiring firmly connected; be especially attentive to the VGA connection screws. Best guess is you have poor ground connection 2. For audio problem make sure you have audio feed from PC to hammerhead. DO NOT have audio feed from PC to any other device (e.g., speakers) 3. Google Sewell hammerhead & look for the YouTube video--it's an ad but it does show correct connections
1167857
I have had the monitor for 2 weeks, but it is used constantly. I frequently attach or separate it from different PCs, and it has been both shut off completely--or simply allowed to hibernate. I have not experienced this problem of the audio failing to switch on with the monitor. I suspect that the monitor is choosing the wrong audio input and perhaps decoupling it from your video signal. Are you using HDMI (for both video & audio), or do you have a separate audio signal input? My guess is that if you use VGA, you should avoid leaving any source plugged into the HDMI port. Likewise, if you are using HDMI, use a newer cable that supports audio and disconnect the audio input at the back of the monitor. Does any of this make sense? Did it help?
1740493
i didn't send mine back, I took the screen off and pressed the speakers. the popping and crackling is gone, every now and then it comes back, so I press them again. eventually they will fail I assume, but what do you expect from something so cheaply and poorly made?
423517
i have the LN46C630 model with same flickering problem occuring just after warranty expired. technician fixed it by cutting one "jumper" (metal wire about 1/2 inch long) located on the power supply circuit board. takes 5 minutes to fix. technician said samsung issued service bulletin that told repair techs how to fix it. you can do it yourself with a screwdriver, small wirecutters. i could send a photo if you wantok, not sure how to post the photo here, but here's what the technician did for $150...unscrew 17 screws, remove the back cover to the TVfind the power supply circuit board, that's the one your TV's power cord plugs into. On the power supply circuit board, upper left corner, to the right of and below the large 46", there is a metal jumper labelled JP852 that is no more than 2 cm in length. it connects something labelled 'Input rating' and another labeled 'COLD'. the technician used wire cutters and cut the JP852 jumper. that solved my flickering issue, TV works great now. tech said that every size TV in this class of samsung has the same design flaw and can be fixed like this. good luck. i would post a photo, but can't figure it out."&lt;/i&gt;
188135
I will have to return it, Just the 2nd day i had it, the screen was acting weird, it will dim and get blurry. Can someone help me before i return it?
311957
I personally haven't had this issue, but I've read reports of screen issues like that. You might need to send it in for replacement. I hear customer service is easy to work with.
2240892
The first lamp I purchased had one bank of LEDs flicker and go off periodically after the first 60 days of use, but never all of the LEDs. Your unit sounds defective. I had to contact the manufacturer about my flickering bank of LEDs. They were very helpful, and in my case they sent a replacement lamp.
264771
Never had a problem!! My lamp (knock wood) has worked perfectly since I installed it. My old bulb was not completely burned out so I saved it in the box for next time. If you have the old bulb re-install it and see if it too flickers. If it does there is a problem with the set. If it doesn't there is a problem with the new bulb. Best advice I can give.
1772794
There might be something wrong with the monitor, on mine, I have two of them. I see the post on the main monitor using the HDMI cable and when I switch the cable to the other second monitor I see the post happen there also. These monitors, I don't really have a lot good to say about them. I have not had one last more than 6 months. You SHOULD be able to see the post, even when the monitor is in sleep mode it should wake up fast enough to get that initial screen. Both of my monitors do.
218445
I'd say it's defective as well. However, what device(s) do you have hooked to it? If you are trying to use 3D over it, it shouldn't work as this device is HDMI v1.3b and not v1.4. If you have multiple devices hooked to it, unhook all but one and try the different ports, it could just be a faulty port or even a bad cable. This is a great little device, I put mine in place in early 2013 and have 3 devices hooked to it, a dvr, a blueray player and a computer. I have never had too look at it again, it just keeps on working. Even if it is defective, I'd try another one because of the low price.
552576
All the warranty questions are answered on there website. I had the same flickering issues. I'm on my third and final coast.
358609
I am responding to you on the one i bought . I'ts bright never had any problem with this monitor. my guess you have a defective one. sorry.
565676
Cannot help you, if still under return timeframe, return it. I have two units, one used for three years, one still new in box, even un-opened--was going to sell it so did not want to open the box, but decided to keep it since now discontinued. Your post reminds me--I should take it out of the box and check it. Question--are you sure it is the monitor and not your video card in the computer, or interference from some other device? Check online for like symptoms.Love this monitor. If you can find a fix, and otherwise in good condition, worth fixing yourself.
617996
I find it interesting that this question came over my email a few days ago and I had also started having issues with my monitor too. For a few months when I turned on the monitor it would start going through the menus on its own sometimes changing the settings. More recently when I turned it on it would light up to start and then turn itself right off. The monitor worked pretty well for me up until about four months ago so it looks like once it passes a certain age or level of use it just stops working for some people
1698521
I had the same problem the TV started to flicker and the screen had vertical rainbow colored screen. Called support and they told me it was out of warranty and the TV never has this problem. After googling it it appears this is a problem with Samsung TV's. I bought a Sony instead. Threw the Samsung in the trash. Customer service was awful and they lied ever knowing about this problem. But once you google it it is a common consistent problem.
539012
I am having an issue with my 5400. Worked great out of the box for about 3 months....Then the video started flickering, then would go black for about 5-10 seconds then come back. (very annoying when watching sports!). anyone have any ideas?
1207879
Very similar issue: flickering problem on this 55 inch. This all began about 24 months after purchase. Does anyone have a solution other than calling a service technician and paying for the repair yourself?