tv hdmi no signal

[gumko]

Hello , I'm not sure I posted it in the wrong section.
I have bought a TV LG webos43 uj634v
My PC runs on gtx750 ti with mHDMI
When im trying to connect it tv to PC , i get no signal message on TV.
I have tried all the input ports on the TV didn't help , tried to connect it on old laptop same thing.

In display settings it detects tv a display so i can change project type and settings.
In nvidia control panel it sees lg tv as a 2nd display.
In device manager it display lg tv as miracast display device.

I have just ordered a straight cable mhdmi to hdmi , mine is conversion with a different attachment to it.

Anything else I can try or mb there is something I need to do on TV itself ?

 

[madmatt30]

Whats your full system specs ??

Why are you using a conversion cable for video ??

 

[gumko]

Case AeroCool DS Cube Red Edition Window Mini-ITX
Processor (CPU) Intel® Core™i5 Quad Core Processor i5-6600 (3.3GHz) 6MB Cache
Motherboard ASUS® MAXIMUS VIII IMPACT: Mini-ITX, LG1151, USB 3.1, SATA 6GBs
Memory (RAM) 16GB HyperX FURY DDR4 2666MHz (2 x 8GB Kit)
Graphics Card 2GB NVIDIA GEFORCE GTX 750 Ti - VGA, DVI, mHDMI - 3D Vision Ready
2nd Graphics Card NONE
1st Hard Disk 120GB SAMSUNG 650 SSD, SATA 6Gb/s (upto 540MB/sR | 450MB/sW)
2nd Hard Disk 1TB WD BLACK WD1003FZEX, SATA 6 Gb/s, 64MB CACHE (7200rpm)

Store didn't have mHDMI to HDMI , they had HDMI to HDMI conversion kit to mHDMI.

 

[madmatt30]

Tried HDMI from the motherboard output just to check it's not the tv that's the issue ??

 

[gumko]

If i plug it in via motherboard HDMI , PC isn't detecting nothing at all.
But i think that motherboard HDMI is simply not connected to anything , its there just for visual.
At least when I look from inside the case I don't it being connected to anything like GPU HDMI.

Ignore the above , BIOS had dual monitor displayed for motherboard HDMI.

Same as GPU HDMI , detected everywhere but no signal on TV.

I dont know if it matters , in extended mode I can move my tabs and software to the TV screen but obv I can't see nothing because there is no signal on tv screen.

 

[gumko]

Tried HDMI from the motherboard output just to check it's not the tv that's the issue ??

mHDMI to HDMI cable came in , everything works.
So I suppose it was cable issue not transmitting the signal properly...