HDMI port corrosion from humidity
Why it happens here
Webster is close to the coast, so humidity and salt air are higher than inland Houston. That accelerates corrosion on HDMI port pins and solder joints. It often starts as intermittent video and gets worse.
Our approach
We clean the port area with an ultrasonic cleaner and replace the port if needed. We also apply a protective coating to slow future corrosion. For coastal homes, we recommend a yearly check.