Hello my name is Hank, Welcome to Just Answer!Have you installed the latest software update version for this tv?
Here is the link for the 4.12 E3 version of software http://esupport.sony.com/US/perl/swu-download.pl?upd_id=6527&mdl=KDL40S5100 this version does resolve issues with failure to recognize HDMI, it can happen all of a sudden, seemingly out of the blue. . . .There are multitudes of issues with HDMI between cable boxes and many tv's. . .once you have the new software, if you still experience issues it's recommended that you simply use component connections for continued, reliable performance. . . some folks are highly resistant to switch over, but after the box and wires get changed and a customer still experiences HDMI issues it really does make the most sense. . .
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How would I get this from the internet to the TV? There must be another answer.
what do you mean "from the internet to the tv"?
do you mean how to get the files and install them on the tv?
The software is at a http address that is on my computer and it is my TV that is not working. I don't have any link between the two.
the sony instructions are fairly well detailed. basically you download onto your computer - to a USB flash drive, then you take the USB drive and insert it into a service USB port on the BACK of the tv and the tv installs the software automatically. No, there is no other answer, I install this software update nearly daily for the known issue of non recognition of HDMI. . . .
if you've tried everything else (unplug HDMI, reset cable box, reset tv to default) then you have to put in the software. in fact, if your set has anything less than version 4.12 E3 then you need to update it. .
My set has ER3.84-D827 software. If this is insufficient how do I make the change ?
that is the old version. . . 4.12 is higher
do you have a USB flash drive?
I have't any idea how to make the change. How do I reset the cable box?
cable box reset is just to unplug AC and wait a minute then re insert AC power. it's good to try but with this series of tv, if none of the HDMI ports are being recognized then it's unlikely to resolve the issue
Thanks, XXXXX XXXXX doesn't work I will call Sony on Monday and see what they say. It is still under warranty.
to upgrade the tv software, you will need a USB thumb drive (flash drive) put it in the computer USB port, then format it for FAT32, then you will click on the new software link and you will get a .zip file unzip the file on the USB drive then you can remove it from the computer.
Thanks and good night.
let me know if you have any further questions!