Thank for your video I got my security cameras working I did your test and it was my adopter. Thank you my unit is working.

Thank you for posting this! Our old 480p wireless Lorex DVR quit in a similar fashion, I think right after a power outage. I tested the power supply and it showed proper voltage, but after watching your video I was skeptical still and tried a different 12V power supply (a little lower amperage) and that confirmed exactly what your experienced. These 12V power supplies seem to be prone to dying after a power outage. I'm ordering another one on eBay as I am typing this. I'm glad I was able to revive our system and save myself the $800 price tag of buying a brand new system now. It's only a deterrent for us anyway and we don't actually rely on being able to get license plates and facial recognition from our system. Thank you for sharing this quick and cheap fix!

Thank you so much. I had a power outage in my neighborhood this morning and my cameras stopped working. This video just saved me so much unnecessary running around and money. Thankfully I had an extra adapter at home!

Lorex has a prolong and serious issue with listening and responding responsibly to its customers. if this fantastic ukrainianbear05's web site was not available, more than $500 would now be wasted. A 12V 4.5 A solved my stalemate, due to a power outage. If in fact the owner of this site is an Ukrainian, GOD BLESS you and all your sympatries.

THANK YOU!!! This led me to discover that the adapter was my problem too. Saved me lots of dollars!

Thank you. Woke up my camera stop working I did everything you said found couple of power supply in basement. And man it working fine now. My 1st thought oh boy I might have 2 buy another system. So thanks a million.

Thanks man appreciate the help! My dad is happy his camera system is back up and running. Take care.

So, bottom line, we learned that you did not actually need to remove a single screw, because only the external power supply was shot. Thank you for the time-saving tip. In my case, after trying TWO different power supply replacements, the HDD came alive. In the mean time, I had swapped the HDD cables to another disk and found the same problem ("No HDD", in system display). This lead me to "cut my losses" and unpack my BACKUP unit (Swann brand). The power supply for that one was same as Lorex, so I tried it, before disconnecting anything else, and now it all works. Problem solved. Thanks again.

I wasn’t having the same exact problem but you did help me a lot to figure it out. Thank you

Thank you so much!!! After playing with it for over an hour, we found your video and it worked!!! Thanks again for the video, you absolutely saved us time and money, cheers man.

You made our day... Exact same situation even purchased frim Costco. Plugged in another power supply and worked. Thank you 1k times over for posting and sharing!!!

Awesome. Had one laying around from an old DVR and it booted right up with the non-fried power supply. Thanks for this video!

Thank you!! I was afraid I had to buy either a new system or dvr. Replacing the power cord was exactly what I needed to do!

Great video. Just had the same exact problem. You just saved me hours/days of troubleshooting. Was going to start taking my Lorex receiver apart, but your solution worked! Lorex needs to provide better quality AC adapters. Thank you!

Thank you. Tried changing the hard drive, still not getting enough power to boot up. I actually used one of the extra power plugs from the multi-plug camera adapter since I am not using all 8 cameras. Worked like a charm. Now I just have an extra hard drive but can't hurt to have a backup drive handy.

THANK YOU! You saved me from a new DVR and hard drive. First the hard drive stopped being recognized. Then a few days later, the DVR would not power on (but did have a long beep). Had an old netgear power supply for a router and everything is working like new. Thanks again!

Thank you very much. You saved me a lot of $$$. I checked the voltage of my power supply and it still shows 12.0 Volts. But I suspect under a load it will not be 12 Volts. I found a spare car battery in the garage and hooked it up directly with some wires and a barrel connector I cut off another charger. It came right on and is working perfectly again. Luckily I discovered this after only a few days. There is an electronics surplus store nearby with a box of hundreds of power supplies for only $1.00 each. I'll be there tomorrow digging through the box. Maybe I'll buy a couple of spares.

Thank you for this post. I thought I needed a need hard drive. My power supply was bad, instead. THANK YOU.

I have a N841A8. Got a notification on my phone that the device is offline. Found it powered off. Checked power supply, it read 48.5V (rated at 48V 2A output). Opened the device and saw a momentary fan action when connected supply and also struggling LEDs. When measured voltage on board, saw severe fluctuation. Called Lorex, they suggested to buy a new NVR. Googled for logic board and found this video. Opened the supply, checked the 100uF 450V cap and it was bad. I had a 180uF, 450V lying around from one of my audio project (tube phono-amp). Replaced cap and its alive. Thanks for sharing. Interestingly we did have a power outage recently. Looks like Lorex has this issue for years now.

Thank you for your video! Mine kept cycling on and off. Remembered I still have an older DVR system from another brand, sure enough same size power supply. Works again.

thank you, i was going to trash my dvr but replacing the power cord worked. even though my electrical tester said my dvr was getting power with the old cord i guess it was not enough power. you saved me alot. thanks again.

Excellent i was having same issue with one of my friends DVR, and is now resolved thanks for posting this informative video.THumbs uppp

Thank you for helping me find the easiest solution to this problem. ..And to think I almost threw out all those old plugs.

thanks for the feed back I had the same issue with my lorex and switched the power supply and it is working now, thanks ones again

Your video came in real handy. Solved my issue with my cameras by switching to another power supply. Thanks

Sir, I wanted to take a moment and say thanks. Like you have a knowledge of electronics and feel comfortable working on them but if a board component need replacing I will leave that up to the pros. I had a similar issue with my system from Costco. The power came on but the board, determined later was under powered by a failing power block. After removing the cover to my system, I observed the board fan turning very slow & HD not spinning up. A quick search on Goggle and pow your KZfaq post came up. I had an extra power block from an old system and poof the unit powered up and functioning like new. Thank you for your time in recording and posting your information in regards to the Lorex DVR systems.

Also upgrade the power supply splitter to the cameras. If the video goes blank or there is color bleed, it may also be the camera power adapter.

Thanks for sharing, you saved me $500! I had the same issue. I had tested the power supply for voltage, and found 12+volts, but I hadn't considered that something else might be keeping the available amps down in the power supply so I thought the DVR must have fried. . I was on my way to Costco for a new system when I stopped myself and decided to check here! Again, thanks!

Had the same issue short power outage and dead lorex had several other powercords and bamm back in business thank you so very much saved a lot of time and money

Thanks. I have the same DVR and the same problem. This is amazing the similarities in the steps I took to get to the same point in your video.

Man this video was awesome! Switched the power supply and im working again. U saved me alot of money! Thank you

Thank you. Had the same problem with loocam cameras setup. I changed the power port and it worked. I opened the one that was bad and it smelled like burned wired. 👍🏼

Thank you !! im already planning to buy another one. Got it running after replacing the power adapter. Im not suspecting it to be the power adapter since a LED indicator inside the board is lit steadily. Thanks again !!

I have beeping DVR LorexEcoStratus. Any advice for fix this issues. Do I need to replace hard drive?

Your the man. Thanks for the quick fix and just saved me hundreds.

This was perfect, thank you. saved me lots of money and time.

Worked for me. Thanks! Now if I can find a way to quite down that darn fan I'd be happy.

Thanks for this. Had a similar problem with my sannce unit.Swapped over the power supply, problem solved. I was about to strip the dvr down, so thanks again for this saved me a lot of wasted hours.

Thank you so much, had same problem now fixed had an extra power supply, did'n even take the cover off. thx to your video

3 years later, still helping people solve the problem. Used the power supply from a neck massager, DVR works like a champ. Ordered replacement from Amazon. Although, everyone can start at 5:00 and get the answer by 5:45.

Just saved a bunch of money by just switching the power supply. Thanks for sharing the video!!

Do you know how to disconnect the Fan and to replace the fan?

You sir are a GENIUS....same problems with mine and was fixed in minutes after checking the capacitors. Have two others with the same problem and I bet this will be the solution for them. Thanks for posting

Thanks a million Buddy. You saved the day.

I'll be trying this on mine tonight, it stopped powering on over the weekend. Thanks!

so the fan stopped working on mine and im afraid the cpu may have overheated. any idea where i can buy a new fan/heatsink ?

had a similar with my lorex DVR exact same model. just it was the power supply for the cameras. threw the old power supply out and replaced with a old Toshiba laptop power supply, and works and been working over 4 years now.

Hey Bud, great video, save me loads of money so thank you very much. new power supply and all works well again. many thanks

Thanks this resolved my issue as well. Have a Dahua DVR that kept blinking with red light and would not start. The issue was also the power supply.

I don’t know if you are still reading comments but I wish i saw your video about 6h of frustration ago! You saved the day, thanks so much!!

Thanks for posting! This helped us out!

haha ! I was literally seconds away from buying a new DVR box when I thought to myself... "think I'll look on YT first to see if anyone else has this problem" My DRV box just had a blinking red power light and nothing else was working, I plugged in a new 12v power plug and hey presto !!! Thanks for the vid, save me money.

Thank you! This worked and did fix the power issue. However, no video will display on any of my monitors anymore. Any recommendations?

Thanks man. I was getting ready to buy a new system after a drive 'failure' and replacing the drive didnt work. This got it back going. Detecting the drive again. wtf lorex

Thank you so much...just saved me loads of frustration.

Thank you very much!!!!!! I will fix this before husband gets home from work!!! LOL !! He will be amazed by my super power ! (eventually I will confess the ease of repair)!! Thank You !!!!

Thanks for this video. I have been searching all over for an answer. I have the exact same symptoms with my HIKVision DVR. I checked the voltage of the ps and it seems ok but didn’t try it under load. I’ll try a different ps tomorrow.

Thank you! Worked for me. I almost bought a new one.

Same problem here - changing the power supply fixed it. Thanks for your video !

Thanks so much. Had same thing with ours and just fixed with another supply. I was ready to trash it

I tried replacing the power supply but it didnt work. I realized that yours does not have power at all. Mine has power when you turn it on but nothing is showing on my tv screen. And it just keeps on making that rebooting sound but still, nothing to see on my screen. What do you think is the problem?

Your video helped me. Mine was also a bad power supply.

Thank you. Replaced the power supply and it's working properly again.

Hi, I have Lorex dvr. My Lorex device has been giving me problems. On the circuit board there is a small battery that I think keeps the time. I took it out and did not put it back. Do you by chance know the battery number so I can replace it? Cheers Jane

Only 2 and half years and She stops working! I was like of course right when warranty is over. I was going to order a new system and just keep the camera's as extras since its cheaper just to buy a new set since they are on sale. The newer version of this system is 299 on Lorex website. I was like You Tube has helped me fix alot of issues, so why not. Your video was the first that popped in my search. THANK YOU!!! I had an newer Netgear Cable Modem that i dont use since we just got a new provider and I used Ac Cable from that. Powered Right Up!! You just saved me $300. I am sure your wisdom comes from all the Holubchi and Verenyky you eat. Lol nice name, my Mom was Ukie. Thanks again!!!

Thanks Alot my brother! Same problem but I actually just unplugged and plugged back the hard drive cables and it’s working again. Felt like kind of like a reset. But I will still but a replacement power supply as it is probably nearing its life expectancy.

Do you know how to change the fan?

Thanks brother saved me from buying a new dvr thought mine was smoked after a power surge

Awesome man thank you for sharing!!!!! I have no power coming out of my cooling fan wire? Do u have any idea .

Thank you very much. I have a zosi cctv and the same thing happened to me. Luckily enough I had a spare power supply and it works great now. 🎉👍

Thank you! You saved me time and money !!!!!!

I have one but only 4 of 8 work. All of sudden the 4 just quit. How to fix it?

Thank you so much for posting this, you are wonderful...

IT RESOLVED MY CASE TOO ! MANY THANKS !!!

Worked for me on a Zmodo DVR!! Thanks!

I replaced my power supply with a 12V 4000mA. Still not working. Any suggestions?

Thank you. I tried mine and it worket. Thank you you saved me a lots of money and time

Thank you somuch for posting this very help full video special for me I had the same issue.

Thank you like every other comments great information fixed it right away

I just came across your channel. Would you please help? I bought a system from a store a few years ago and it worked, then one day the recorder stopped working completely. I don't know what to make of it. LNR6108x-n is the recorder, how to troubleshoot it? What could go wrong? It is not a power supply, it shows 48v

Thank you so much, you made my day,it works try with another power supply.

Thanks this happened to me too and save me a load of money on repairs.

Thanks!! weird, was watching the video and my camera started working again and I didn't do anything, going to go and get a new power supply though just in case it dies again. mine would start up and then shut down within a couple seconds before it showed up onto the monitor so I didn't know if it was the camera system or the t.v.s hdmi not working. thanks again!!

Thank-you. You saved me lots of money.

I was about to spend hours and who knows how much money trying to figure this out for my night owl system. Thank you for sharing. Apparently power supply has surge protection!

Nice video. Thanks for the info, I never thought of that. Just for record, 2.5 amps and 2500 milliamps are the same. No metric terms involved. Also, don't use a 9 volt power supply because the lower the voltage is, the higher the amps drawn are. It may exceed the amp rating of the circuitry on the board.

Thank you.Had the same problem and change the power supply and it works.

Muchas gracias por el video! Tuve el mismo problema y le di la misma solucion gracias a tu video.

Thanks buddy, you saved my time and money.

It didn't work 1st or second time but I notice amps play a role. Just not 12v. The 1sr 2 trys it worked bout 1min then shut off so I found 1 with higher amp. Now it good. Thanks bro

my system is only a couple months old i just did the update and my dvr keeps rebooting

Gracias por tu video, me sirvió para arreglar mi dvr. Saludos

Anyone know where the factory reset button is located on these old lhv2108s? Picked up a used one and no password…

Man you are a life saver The same thing I did and it worked Thank you God bless you

I had the same problem, and i did exactly what you did and same reaction,lol. Thanks so much ,i know now that it's the power cable.... btw my system is a zmodo.

Thanks bro. I got an LED light and connect it to the AC the LED was blinking as the light was doing on the Dvr

I have replaced the stupid cooling fan on this board twice now, so when it started emitting 4-second-long ear-splitting beeps at 2:30am a few days back I figured it was time for another one. Alas, it would not even turn on this time. Wish I had tried swapping power supplies before opening it up again.

I forgot my password for Dvr h264 How can I recover or Master Password.

Thanks Lots ……But I keep getting no signal my green light blinks wont stay on BUT i have power fan n hard drive however it flash lorax the say no signail all happen after I hit the breaker box do u know what that connect is beside the power plug❓HELP MY NEIGHBORS ARE A NIGHTMARE

Damn I’m having issues with my lorex system everything turns on but no power on the mouse and on the power icon instead of being Green it’s Yellow anyone knows what it could be ??