I have a sunluxy H.264 network dvr i cant get any

Question edited for Make and clarity.
Question moved to Home Security.

No sound on this system, video only.

System Specs

Price breakthrough! An affordable 4 channel DVR suitable for day and night surveillance. Includes 500GB of storage for up to 300 hours of continuous video recording from the four 420TV line weatherproof colour cameras with IR illumination. The four channel DVR supports full D1 resolution at 25 frames per second on each channel and can be controlled across the network or by using the included mouse or remote control. Recordings can be initiated manually, triggered by a timer or activated by movement in the camera's field of vision. Connect the DVR to a computer network and you can even view video remotely from anywhere in the world using a web browser or Smartphone/iPhone® (via installed app*).

DVR Specifications:
• Video compression: H.264
• Video input: 4 x BNC composite
• Video output: HDMI, VGA, 2 x BNC Composite,
• Audio input: 1 x RCA
• Audio output: 1 x RCA
• Maximum recording resolution: 704 x 576 (D1) at 25fps per channel
• Maximum recording frame rate: 100fps
• Hard disk storage: 500GB SATA
• Back-up: USB & network remote back-up
• Network interface: RJ45, 10/100Mbps
• Power supply: 12VDC 5A (included)
• Dimensions: 255(L) x 185(W) x 50(H)mm

Camera Specifications:
• Sensor: 1/3 CMOS
• Horizontal resolution: 420TV Lines
• Lens type A (2 cameras): 3.6mm lens, 72 degree angle
• Lens type B (2 cameras): 6.0mm lens, 45 degree angle
• Size: 85(L) x 45(Dia.)mm
• Voltage: 12VDC from DVR power supply

Camera Cables:
• Cable type: Combination video and power
• Cable length: 18m

* Free app for viewing live video available for download.

https://www.jaycar.com.au/economy-network-4-channel-dvr-kit/p/QV3048

Manual

https://www.manualslib.com/manual/596293/Techview-Qv-3048.html#product-QV-3048

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Check the wires from the cameras to dvr. Animal may have chewed thru them.

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

make sure that the DVR system is PAL and the resolution is 720p

Perhaps it's just that the hard drive is full?

Do you have a separate recorder on that system?

Your record rate may be set too low on the recorder. Check your record rate and set it as high as it will go. Should be 30 fps.

If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box and press "Enter".
http://electronicshelponline.blogspot.com/
System reset procedure to many popular brand video recorders are given.

Guys this one stumped me for some time, here is my solution that worked like a dream

1. plug the hard drive you are using into a pc and check the hard drive is recognise and works.
2. Delete all partitions
3. ensure it has a 8 bit cache buffer!! This is the most important one. That means the system only supports older hard drives. I got 2 second hand ones from the local pc store for $50. See the list of hard drives that are know to work below.

MANUFACTURER MODEL CAPACITY ROTATION
ST3320613AS 320GB 7200 rpm
ST33500320AS 500GB 7200 rpm
ST3750330AS 750GB 7200 rpm
Seagate
ST31000340AS 1000GB 7200 rpm
WD3200AAKS 320GB 7200 rpm
WD5000AACS 500GB 7200 rpm
WD6400AAKS 640GB 7200 rpm
WD7500AAKS 750GB 7200 rpm
WD10EADS 1TB 7200 rpm
WD15EADS 1.5TB 7200 rpm
WD
WD20EADS 2TB 7200 rpm
Maxtor STM3500320AS 500GB 7200 rpm
STM3750330AS 750GB 7200 rpm
HITACHI HDT725032VLA360 320GB 7200 rpm
HDS721010KLA330 1000GB 7200 rpm

FYI for some reason the person I bought this off online "Ebay" had no idea how to support and I could not get support from their web site as they email they give just bounces back.

Cheers.

You may be lucky because the battery acid may not have gone beyond the contacts in the battery chamber: open battery chamber and clean out especially at the bottom of the chamber and blow out any loose stuff when you finished cleaning ( use pencil erazor or something similar , but do not use sand paper or anything that will damage chrome plating of the contacts ; you do not want corrosion at later stage ).

hello friends i have 8ch H.264 dvr i forget defalt password please help me how to get the password