At a loss.....

You probably have some sort of grounding problem. The direcTV tech was not quite correct when he says that it's impossible to send current via the coax connection, because the whole system is (or should be) grounded somewhere, and if there's a power surge through another cable that should be connected to ground then that could cause this. Remember the DirecTV dish is supposed to be grounded. You need an electrician to come and look at your house installation (not just the DirecTV box and TV, because the actual problem could be somewhere different).

EDIT: Is your Tv also connected to a regular antenna, by the way, because that would create another path to ground, all the way through the DirecTV box and the TV.

my big screen was connected to the dvr, my audio reciever, and a ps3.  No regular antenna.   The box that was blown last night was not connected to anything except the direct tv box via composite cables errr i should say i tried to connect it to the stb via composite cables. as I was attempting to plug in the red cable it made a poping sound and shocked me.  but it was not connected to an antenna either.

But your TV was connected to the A/V receiver and the PS3.  That means there were at least two paths to ground from the TV. If it was a grounding problem, you were lucky that the board in the TV blew before it also damaged the A/V receiver and/or the PS3.  Whatever the issue, you need an electrician to look at it. You might have a situation that is dangerous to people, not just to your equipment.

My big screen was connected to the ps3 and my receiver, but the second tv was not.   i did have an electrician come out to my home yesterday to check my electric.  Everything checked out fine.  Funny thing was as a last resort he checked from the Direct box ( with no power cord only the coax cable  with the swm box unplugged) to the ground on the surge protector it read at 121v.

Not sure how everything can be fine when the coax is energized with line current.  You may not have understood Texasbrit's comments, so I'll give it a go.  The coax from the dish normally passes through a ground block and that block is connected to the ground wire of your electric service.  If the coax has 110 volts than it's likely entering through the ground block from some other source in your home, which is back feeding the ground with 110 volts.  Something as simple as changing the white wire with the black wire in a receptacle can cause such a thing.  The solution to your problem lies within your home and you really need to locate it.  Debating the issue here is of no value to you.  Did the electrician leave without tracking down the source of the current?  Was he a real electrician?

I assure you it was a a real electrician, and has been for many, many years.   As far as debating the issue and it having no value to me.... I was not debating anything.  I was simply giving an update on what had happened since my last post.   If I found a "value" in debating that would really be up to me, not you, but that is not the point here.   I will not lie I have absolutely zero knowledge of electrical setups and would never try to claim to.   The electrician came out and tested the inside of the house all locations read to the correct voltage.  It was after dark when he made it out, so he will be coming back out to check the outside today.  He stated that if it was an electrical problem it would have fried the other stuff that is connected in the same room to the same surge protector.  He did look, but not touch the sat, which he stated appeared to be grounded to the pole.   He walked the lines back and checked where connected to the box outside.  He stated it was grounded from the sat to the box, but from the box to the home was not.  I do understand what you were saying about the ground block and will bring that up to him when he comes out today.  My top priority is the fact that I do have a 3yr old that I have to make sure it’s safe for, also I do not want it to fry anymore equipment.  So any ideas I will def look into. 

You're electrician needs to determine why there is 120V on the satellite coax. That's an obviously lethal issue.  Let us know what he finds. 

I am surprised the electrician left the house with a potentially lethal voltage on the cable...

The tech left not long ago after once again going over everything.  After re-tracing every wire in the house it appears to be a wire that once went to a septic system. that is no longer connected.  Testing from the bottom of the direct box now to the same ground in the surge protector again, it now reads 0.3 on his meter..... much better than 121 from last night. The guilty wire was disconnected from the fuse box and he retested everything again.  It appears to be working good. I appreciate all the suggestions

It's rare, but it happens.  Best to contact an electrician to fix this before someone is injured.  

You misunderstood this thread. The original poster believed, like you, that the Directv system had somehow energized the coax and caused his problem. In his case it turned out to be a faulty wire in his circuit panel which in turn energized the ground which in turn energized the coiax via the Directv ground system. In short terms, he had a hot ground, it was't due to any Directv malfunction. Yours is almost surely not either, you much more likely have an electrical problem.

Yes they should have checked this and they also should check to see if the wall socket to be used is phased correctly because if it is not it will fry your hdmi port. also if they hook the transformer to a wall socket theat is phased wrong it will not reduce the power from 120v to 12v it will send 120v through the coax back feeding to the satillite.You will know very quick if this happens . I fried two tvs and a 3d blue ray p[layer because this was not checked first . And if the installer knows this he should check it before it is installed he is supposed to be the professional here. you can get a phase checker at lowes for 6 bucks and it don't take a genius to read. save everyone a lot of time . I think derect tv should be resposible . I have been useing this plug with a 60 inch led tv and blueray player and never had a problem if the equipment requires being phased it should be checked by the installer.