Can HDMI cords/Cable Box Short Out Motherboard???

Tstark123

Commendable
Jul 14, 2016
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I have to LG 3D Smart TVs. They are basically the exact same TV except one is a 2013 LG 55G2. The other is a 2014 50GA. A week ago I woke up and all 4 HDMI ports on teh 55G2 stopped working. I tried everything but nothing worked. On the 50GA the HDMI port 1 has stopped working (it reognizes something is plugged in but does not work). The only thing plugged into each TV was a cable box from Comcast. I know Comcast will not do anything to fix the issue, but when I explained it to them they told me that it would not be possible because HDMI cables do not carry electricity and could not effect the ports or motherboard. I know I am going to have to pay to get these TVs fixed, but the irony of both of them going out on the same day is eating at me. I have tried everything imaginable: reset TVs, new HDMI cords, unplugging an plugging everything. Any help would be greatly appreciated. Lastly, if I have to replace the motherboards, is something I can do myself or do I need a TV repairman?
 
HDMI cables do carry 5v DC but not a lot of current.
I have seen your problem happen before once. I think that a high voltage transient came through the cable system and damaged the HDMI input of a couple of TVs. Like you say you won't get Comcast to take responsibility.
Check with these folks
www.shopjimmy.com
they sell replacement boards and are very helpful.
 
HDMI cables do carry 5v DC but not a lot of current.
I have seen your problem happen before once. I think that a high voltage transient came through the cable system and damaged the HDMI input of a couple of TVs. Like you say you won't get Comcast to take responsibility.
Check with these folks
www.shopjimmy.com
they sell replacement boards and are very helpful.
 
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