Static shock from Sony TV HDMI

Hello all,

Whenever i touch my mac mini i get a electrical static shock. It is actually quite painful and annoying as i get shocked whenever i connect my iphone to my mini via the cable. I finally identified the culprit, the static electricity is coming from my sony bavria TV HDMI connection. So i called the Sony technician and he came to check the TV. He said it is normal for HDMI cable to carry static charge and there is nothing he can do.

Just want to check is this normal ??? because it is getting really annoying. My external hard drive i connected to my mini had crashed yesterday and i cannot help but suspect this electrical charge had damaged it.

Does anyone out there has experience dealing with this issue? HELP....... my mini is only a few months old and i really dont think its normal that it's electrically charged like this......