Question 1

Does anyone else have issues where the screen randomly goes black for a couple seconds then comes right back? It's not adjusting resolution or anything, I can already be playing a game and it will just go black randomly, and then come right back a few seconds later.

Accepted Answer

No, this sounds like a hardware issue with one of the following:
Monitor internal power supply
Cable between computer and monitor
Video card

You can test each one of these.  To test the monitor, disconnect it from the computer and instead hook it up to a blueray player or something via a good quality HDMI cable (not same as connected to computer), see if the issue occurs there.  If so RMA the monitor.

If the above doesn't occur then try using the good quality HDMI or DP cable connected to the computer.

Lastly, if you have another computer test the monitor on that video card or try a different monitor.

This is just a process of elimination, but then you will have a better idea where the problem lies.

I hope this helps!

Question 2

Can someone tell me if there is a recommended video card for this monitor?

Accepted Answer

I personally used a 1060 6 gigabyte card. Works great. Cannot speak for others.

Question 3

some one suggested they are unable to turn off the internal speakers. Can the speakers that are in this monitor be disabled? I don't want them on. any help will be appreciated

Accepted Answer

I have only had my 43" monitors in service for a few months, I never really gave any thought to the built in speakers as I listen to audio through an external set of speakers connected to the motherboards on board sound ports. 
After seeing this question, I checked the menu settings on the monitors and I do not see an option to disable the built in speakers. However I found the volume was set at 25% but I have never noticed any sound coming from the internal speakers?. I just now set them to 0% and an "X" appears indicating they are now muted (even though I did not hear them at 25% previously) To test, I just cranked the internal volume up to 75 % on my right side monitor and still no sound appears to be coming out of the monitors internal speakers.
Perhaps the computer recognizes that external speakers are connected and therefore is not sending an audio signal to the monitors?) (speculation)

Question 4

Just to clarify- the listed 60 Hz is at 4k resolution, not at 1080p or something, right? My last screen advertised 60 Hz but couldn't go above 30 when actually set to 4k.

Accepted Answer

Yes, it will run 60hz at 4K on two of the four HDMI ports and the DisplayPort inputs.  However, when on those HDMI ports there is a setting you need to turn on on the TV to allow 60hz.

Question 5

With Picture by picture, can you make the screen have dual resolution of 3840x1080?

Accepted Answer

Hello there, Thank you for contacting us in regards to your question. According to the manufacturer specifications, the screen could be split in several different configurations such as the one you have mentioned. The manufacturer specifications will be linked below as a reference. The different settings is pictured just above the specs listed on the manufacturer website. https://www.lg.com/us/business/commercial-display/it-products/desktop-monitors/lg-43MU79-B Hope this helps, Newegg Support

Question 6

What is the difference between the 43MU79, and the 43UD79-B? What makes this model $100 more expensive?

Accepted Answer

The only obvious difference I've seen between the 43MU79-B and the 43UD79-B is the warranty period. The former(this product) has a 3 year warranty and the latter a 1 year warranty.

Question 7

Can this be mounted on wall?

Accepted Answer

Yes, standard 200mm Vesa mount.  You will need to get your own Vesa wall bracket.

Question 8

Does this monitor have internal speakers?

Accepted Answer

Yes, and they are quite good for built-in speakers on a panel.

Question 9

Does this model have freesync?

Accepted Answer

No FreeSync. I have this monitor.  Originally early this year, LG announced it would have FreeSync, but the actual released product does not. Neither does the LG 43UD79-B model (which is actually identical to this 43MU79-B model, as per LG except for the warranty period).

Question 10

Can this be wall mounted? VESA mount will work?? What other wall mount options are there?

Accepted Answer

Yes this can be... per the LG website on this model, this product has a 200x200 vesa mounting, which can seen there is some mounting by the removable back cover given in the pictures.

Brand	LG
Model	43MU79-B
Cabinet Color	Matte Black

Screen Size	43" (Actual size 42.51")
Glare Screen	Anti-glare
Widescreen	Yes
Maximum Resolution	3840 x 2160
Resolution	3840 x 2160 (4K)
Refresh Rate	60Hz
Viewing Angle	178° (H) / 178° (V)
Monitor Pixel Density	0.2451mm x 0.2451mm
Brightness	350 cd/m2
Contrast Ratio	1,000:1
Aspect Ratio	16:9
Response Time	8 ms
Panel	IPS
Display Type	UHD
Horizontal Refresh Rate	30 - 135 kHz
Vertical Refresh Rate	56 - 61 Hz

Input Video Compatibility	Digital
Connectors	HDMI, DisplayPort, USB-C
HDMI	2 x HDMI 1.4, 2 x HDMI 2.0
DisplayPort	1 x DisplayPort 1.2
USB 3.0	1 x USB Type-C (60W PD, DP Alt. Mode, Data), UHD@60Hz

Power Supply	100 - 240 VAC, 50/60Hz
Power Consumption	70W (Typ.)

User Controls	On-Screen Control (OSC)
Regulatory Approvals	TUV-Type, CB, UL(cUL), FCC-B, DisplayPort, ErP, RoHS, Reach, Windows 10
Stand Adjustments	Tilt: -5 to 10 degrees
Built-in Speakers	2 x 10W
HDCP Support	Yes
VESA Compatibility - Mountable	200 x 200mm

LG 43MU79-B Matte Black 43" (42.51" Diagonal) UHD 3840 x 2160 4K Monitor, 350 cd/m2, HDMI, DisplayPort, USB Type-C, Tilt, VESA Compatible

Learn more about the LG Electronics 43MU79-B

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Warranty, Returns, And Additional Information

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Manufacturer Contact Info

Dimensions	25.50" x 38.10" x 10.80" w/ stand 22.60" x 38.10" x 2.80" w/o stand
Weight	35.10 lbs. w/ stand 27.10 lbs. w/o stand

Item#: 0JC-000D-005G2