Turn on tv screen shows for a second and goes blank.there is sound

Are you using cable and if so which company and box?

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LCD & LED TV Repair - No Image & Blank Black Screen ...

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https://www.youtube.com/watch?v=xUzCLgoSPGM
Sep 15, 2014 - Uploaded by ShopJimmy.com
LED & LCD TV How to Diagnose Symptom of No Image on the ...the the tv turns on but there is no picture or sound and I can't seem to fix it the .... +tbones11234 I have the same on myHisense 55" TV,what did you ... The problem is when i turned it on it shows on the screen the sony logo three times then its ...

TV with Black Blank Screen Repair How to Troubleshoot ...

? 3:16
https://www.youtube.com/watch?v=kFdVi2ejfzA
May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ...Click Here to BUY TV REPAIR P... ... I Have a Hisense Tv in My Screen Is Not Working Right The brightness is ... Hi my TV shows the picture for a moment and then goes .... here the sounds but you cant see nothing and a sanyo flat screene.

If the picture shows a picture briefly upon power up then goes off after a few seconds, you have a back light fault. It could have a problem in the 24vdc circuit, failing back light inverter board, or a blown CCFL lamp.

if the Tv have back light the problem is t-con if not the problem is inverter

helloFive blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

shaun

If this is a flat panel LCD tv, this is a sure sign that the panel itself is bad. I have seen this before. Tv comes on works fine then within 5 minutes goes blank.

TV Parts Universal TV Stands DLP Chips ShopJimmy Your T-Con board is toast. You can get another from here.

It sounds like it is loseing signal, check your connections, and make sure you have the correct cable

mine does the same thing, before... it would come on when i turned it on & off. But now it blue screens then blank black. Blue means if it stays blue & i turn on my computer it will show all the computer stuff, i have not used TV yet.. But if you can get it to stay blue you can change things with the cc control, or swap..
If you find how to keep it blue let me know please..

All symptoms in your TV shows that you need to replace its Lamp as it has been consumed its life hours and TV requires new lamp. Lamp can be obtained from Sony Website. Price is $200, Hope this info will help you to enjoy your Sony TV in coming days.