Problem with Sony Home theater in a box

[dramoni]

Hi I'm new here and hope this is the appropriate place for my question.

I have a sony home theatre system dav-dx170/dx250 and all has been good until today. I went to hook my laptop up to my LCD t.v. through hdmi and noticed I had no sound.

So I unhooked the laptop completely and hooked everything back up and checked the sound for my cable and again there was no sound coming out at all. It was just working minutes before so I can't figure out what happened.

My hdmi cable is good and my audio out cables from my t.v. to the sony system are ok.

I believe I have the issue narrowed down to the unit itself because I am not able to get my radio stations which that feature is standalone with the sony system.

When I change the function to "dvd" all I get is "please wait" and nothing happens. I can't eject any discs. I also unplugged the unit and let it sit for several minutes and also did a "cold reset", which reset defaults, by pressing the "stop" "eject" and "power" buttons.

Although I believe it is the unit itself my current config is as such:

coax cable - digital cable box - lcd t.v. with hdmi - sony theatre system with basic red and white av cables

Any help would be great thanks.

 

[TLS Guy]

Hi I'm new here and hope this is the appropriate place for my question.

I have a sony home theatre system dav-dx170/dx250 and all has been good until today. I went to hook my laptop up to my LCD t.v. through hdmi and noticed I had no sound.

So I unhooked the laptop completely and hooked everything back up and checked the sound for my cable and again there was no sound coming out at all. It was just working minutes before so I can't figure out what happened.

My hdmi cable is good and my audio out cables from my t.v. to the sony system are ok.

I believe I have the issue narrowed down to the unit itself because I am not able to get my radio stations which that feature is standalone with the sony system.

When I change the function to "dvd" all I get is "please wait" and nothing happens. I can't eject any discs. I also unplugged the unit and let it sit for several minutes and also did a "cold reset", which reset defaults, by pressing the "stop" "eject" and "power" buttons.

Although I believe it is the unit itself my current config is as such:

coax cable - digital cable box - lcd t.v. with hdmi - sony theatre system with basic red and white av cables

Any help would be great thanks.

I'm confused. Did you connect your laptop direct to your TV or via the Sony HTIB receiver? If the latter it sounds as if your laptop hosed your Sony receiver somehow. In any event it sounds likely your Sony unit is destroyed.

I would get the HDMI output of that laptop professionally looked at.

We have had instances of units being hosed by HDMI before, including the owner of these forums. I'm not sure how it happens, but HDMI is a two way communication.

If your laptop was connected directly to the TV, then I think it is all a coincidence, as the TV would have to have had a problem as well. So in that event it happened to be the time for your Sony to die.

 

[dramoni]

Thanks for the reply. I connected my laptop directly to my t.v. then the t.v. just has basic av cables out to the sony t.i.b. So maybe it was just one hell of a coincidence.

 

[TLS Guy]

Thanks for the reply. I connected my laptop directly to my t.v. then the t.v. just has basic av cables out to the sony t.i.b. So maybe it was just one hell of a coincidence.

I have been thinking about your problem and may be it was static charge. Tell me which of your units have three pin plugs, if any?

 

[dramoni]

Not exactly sure what you mean by pin plugs, but I don't think either of my units have them.

T.V. is a basic lcd t.v. with hdmi, component, and composite inputs and outputs.

Sony Receiver/Dvd player has only component and composite inputs and outputs.

 

[TLS Guy]

Not exactly sure what you mean by pin plugs, but I don't think either of my units have them.

T.V. is a basic lcd t.v. with hdmi, component, and composite inputs and outputs.

Sony Receiver/Dvd player has only component and composite inputs and outputs.

I'm talking about the earthing plug. I suspect you plugged in the HDMI from your laptop, with the units on, which should never be done.

I suspect you had a static charge on you of a few thousand volts from shoes and flooring. Laptops are usually ground isolated, so your charge would be transferred to the HDMI plug. If the TV had no ground, then the charge would go to the Sony receiver. The receiver if it has no ground would transfer the static charge to neutral via internal circuits. Even even a fraction of that charge was transferred via the microprocessor chip, then it would be instantly destroyed.

From your description of your Sony unit it sounds as if the microprocessor chip has been taken out. It will not be worth fixing if that is so.

I suspect something like that happened, but if you tell us precisely the connections between all units connected at the time this happened and which devices have grounding pins on the AC cable, I can likely tell you how this happened. I need to know what is connected to what and with what.

On refection I think this was a mishap caused by static build up on you. The take home lesson, is always switch everything off and power down before plugging and unplugging things.

 

[dramoni]

My t.v. has a gounding pin on the ac cable, my receiver does not and my laptop cable does not.

All I did was hook my laptop directly to my t.v. with my hdmi cable. The only thing hooked between the t.v. and receiver are red/white audio cables. Those cables are never disconnected.

So the only cable connected and disconnected is the hdmi to the t.v.

Sounds like the static charge might make the most sense.

 

[TLS Guy]

My t.v. has a gounding pin on the ac cable, my receiver does not and my laptop cable does not.

All I did was hook my laptop directly to my t.v. with my hdmi cable. The only thing hooked between the t.v. and receiver are red/white audio cables. Those cables are never disconnected.

So the only cable connected and disconnected is the hdmi to the t.v.

Sounds like the static charge might make the most sense.

The grounding plug on your TV ought to have discharged the static to ground. May be the ground is poor in your house wiring.

Your further information leaves only two explanations.

Coincidence, or defective house ground.

 

[dramoni]

I do live in an apt so maybe the wiring is crap. Everything else about the apt is. Thanks for the help.

Does anyone know of a place to look for microprocessors that might have what I need. I can do the repairs if I know where to get the stuff.

 

[TLS Guy]

I do live in an apt so maybe the wiring is crap. Everything else about the apt is. Thanks for the help.

Does anyone know of a place to look for microprocessors that might have what I need. I can do the repairs if I know where to get the stuff.

Modern electronics is not fixable the way the old gear was. The components are small and crowded on the board. The components are no longer through board, but surface mount and placed by robot. No human can place those components.

Repair these days is replacement of the whole board. Since the board that has gone down is the brain of the receiver, it likely will be more than the unit is worth.

Ask Sony the cost of the board, and you will likely need huge skill to get it in and out. This Far Eastern gear is unbelievably crowded these days.

The other problem is the failure may have spread beyond that board, so full diagnostics would have to be done before replacing anything.