The Gulf Power technician came out to test my surge protection and found nothing. He tested the CATV filter which goes directly to a grounding rod and he tested the unit on my meter which is also grounded to a ground rod. He found nothing. So, I cant explain how the HDMI out from the DVR and the HDMI of the connected XMC-1 could fail otherwise. Coincidentally, at the time directly following a major lightning storm.
My next step could be to go ahead and take advantage of the new V3 HDMI 2.0b 4K HDCP 2.2 8X2 switching module sense the upgrade is included with my unit whenever I get ready. Thoughts?
How long is your HDMI cable? It doesn't have to be a direct strike or have a "path" to whatever device that failed. A lightning strike creates a huge electrical field which results in an inductive surge in any metallic object. Any length of wire (shielded or not) will act as an antenna; the longer it is, the greater the surge. No lightning/power/surge protector will block that, and unplugging the equipment from the wall outlet won't help either. This is a situation where you can do everything right and still get nailed; Mother Nature will not be denied.
My old receiver's (Sunfire) left-rear channel was fried (the repair shop said that all of the electrolytic capacitors in that channel were "gone"); it happened that that speaker was on the longest wire run from the receiver. I live in the mountains and experience frequent near-strikes. It wasn't hard to connect the dots.
Emotiva XMC-1 Emotiva XPA-5 Polk LSI-15 Surround Speaker Set (including a PSW-1000 sub-woofer with a replacement plate amp) Oppo UDP-203 Player LG 55EF9500 Smart OLED 4K Ultra HD TV Grace GDI-IRDT200 Digital Tuner Zappiti One 4K HDR Media Player CyberPower 1500 Sine Wave UPS Brickwall Surge Protector
Pretty standard stuff. Good quality cables located on an interior wall. I'm convinced it came through the CATV although I can't prove it. I just have to assume the charge was small enough to pass but large enough to take out the HDMI which does not take much.
Samsung PN64F8500 Emotiva XMC-2, XPA-5 Sherbourne 7/2100 OPPO BD-103D Panamax Max 5300 ProJect 1Xpression III TurnTable PS Audio UPS-200 Cambridge Audio 551P TT Amp Pioneer Dynamic Processor RG-1 Paradigm Studio 100 v5 Studio CC-590 v5 Studio ADP 690 v.5 Studio 10 v5 SVSound BP-2000 Pro x2 James EMB-1500
I'm convinced it came through the CATV although I can't prove it. I just have to assume the charge was small enough to pass but large enough to take out the HDMI which does not take much.
So a current came in on a CATV wire, did damage and stopped? We learned in elementary school science that electricity, to exist, must have both an incoming and outgoing path. What was an outgoing path?
Incoming path is from a cloud. Outgoing path is to earth. What was a path from that cloud, through an HDMI port, and then out to earth ground? Long before seeking a solution, first an anomaly (threat) must be defined.
A 'whole house' protector, properly installed, means direct lightning strikes without damage to anything. Even a protector must not fail. But no protector does protection - not one. So, if AC electric (the most common incoming path for damaged HDMI ports)was the incoming path, then that 'whole house' protector did not make a low impedance (ie less than 10 foot) connection to earth. Earth ground (not the protector) does the protection.
Did their tech verify an earth ground that exceeds what code requires? Or did he just verify a ground was sufficient to protect human life? Did every incoming wire (CATV, telephone, invisible dog fence, underground automatic lawn sprinklers, power to a detached garage) also make that same earth ground connection?
No protector does protection. Not one. A lightning rod also does not protect a structure. It is also only as effective as its earth ground. How good was an earth ground for every wire inside every incoming cable? If any one wire does not make that low impedance (ie less than 10 foot) connection to the one and only earth ground, then all protection is compromised.
Unfortunately, most want a solution inside a box. But no protector does protection. A protector is only a connecting device to what does protection. Even that CATV wire has best protection when it has no protector. (CATV filter does no protection.) Best protection is a low impedance (ie has no sharp bends or splices) hardwire connection to the same single point earth ground.
A surge was apparently inside. And probably outgoing via an HDMI port. So why did you all but invite that surge inside? Only you are responsible for providing and maintaining that earth ground. Surge was inside because it was not given a low impedance (ie hardwire not inside metallic conduit)connection to earth. An investigation begins there.
Technician can only verify a protector did not fail catastrophically - a completely unacceptable failure. Technician cannot tell if the protector has failed in the acceptable manner - degradation. However, a properly sized 'whole house' protector must not degrade even after multiple direct lightning strikes. Such surges are rare - maybe one every seven years. So degradation probably did not exist.
What human mistake resulted in lightning hunting for earth ground destructively inside? If all incoming wires are properly earthed, then no surge would be inside. An investigation for the human mistake begins at single point earth ground.
Ignore the myths about an induced surge. That transient only exists when one is told to fear; never learned numbers. Such transients have such trivial energy as to be eliminated even by an NE-2 neon glow lamp (ie less than 1 milliamp). Your damage means some direct connection existed.
BTW, that is a 'secondary' protection layer. Did anyone also inspect your 'primary' protection layer? Each layer is only defined by an earth ground. Are a CATV company's and AC utility's earth ground intact? Did anyone do those necessary inspection?