Sharp HDMI connections Not working. Need Help

[skanknpunx]

I have a Sharp LC-46LE620UT LED TV.

All of the inputs work on the TV, Except the 4 hdmi connections.
ie: I get cable picture just fine with componet cables.

If I plug in HDMI cables, I get picture and sound for a few seconds and then the screen/picture flashes in and out with Blue and Purple and then goes black. Then the TV show comes in and out like that.

I have changed out:
1) Main Board (replaced)
2) New HDMI cables
3) Tried different HDMI devices, PS3, cable box, Fire stick

Not sure what else to do. Please help.

[nomoresonys]

Re: Sharp HDMI connections Not working. Need Help

I have an android device, get about same symptoms, when try to hdmi with sony lcd, but it works with other tvs, and everything else seems to work with the sony in hdmi, just not that one device, strange problem indeed.

[nomoresonys]

Re: Sharp HDMI connections Not working. Need Help

I have a Sharp LC-46LE620UT LED TV.

All of the inputs work on the TV, Except the 4 hdmi connections.
ie: I get cable picture just fine with componet cables.

If I plug in HDMI cables, I get picture and sound for a few seconds and then the screen/picture flashes in and out with Blue and Purple and then goes black. Then the TV show comes in and out like that.

I have changed out:
1) Main Board (replaced)
2) New HDMI cables
3) Tried different HDMI devices, PS3, cable box, Fire stick

Not sure what else to do. Please help.

could try updating firmware.

[skanknpunx]

Re: Sharp HDMI connections Not working. Need Help

I have updated the firmware. I think it maybe a hardware issue. I am trying to repair this myself. SO I do not know, (but willing to learn), how the hdmi hardware is interconnected. I am Techncially Savy, just new to trying to fix my own LED TV.

Any help would be great. What else is connected to the main board that controls or uses the HDMI signal? All other inputs work. Just not HDMI.

Thanks

[Ltank]

Re: Sharp HDMI connections Not working. Need Help

HDMI port's are made into the M.B. if the other inputs and sound works ok, then I can conclude that you have a bad M.B.
Have you tested the HDMI ooutputs on another TV? Does the TV menu let you select the correct inputs to TV?

[urbis]

Re: Sharp HDMI connections Not working. Need Help

Could this not be some kind of HDMI Handshaking/HDCP issue?

[AFajitas]

Re: Sharp HDMI connections Not working. Need Help

Check all the settings for any HDMI settings and disable/change them. What are the odds of getting a replacement motherboard with the same HDMI issue?

[ecking767]

Re: Sharp HDMI connections Not working. Need Help

I have a Sharp LC-46LE620UT LED TV.

All of the inputs work on the TV, Except the 4 hdmi connections.
ie: I get cable picture just fine with componet cables.

If I plug in HDMI cables, I get picture and sound for a few seconds and then the screen/picture flashes in and out with Blue and Purple and then goes black. Then the TV show comes in and out like that.

I have changed out:
1) Main Board (replaced)
2) New HDMI cables
3) Tried different HDMI devices, PS3, cable box, Fire stick

Not sure what else to do. Please help.

last resort: from your TV menu try resetting your TV"s back to FACTORY. If that doesn't fix the problem post pictures of your main board or just replace your main board

[AFajitas]

Re: Sharp HDMI connections Not working. Need Help

Just a random thought, but maybe try an over the air antenna to see if that works. I think it uses some of the same processing as the HDMI being a digital signal.