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Sony Bravia KDL 40BX420 Black Screen   Goto page 1, 2  Next  
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redwolf7374



Joined: 22 Jan 2014
Posts: 17
Location: Texas

PostPosted: Tue Feb 25, 2014 11:26 am    Post subject: Sony Bravia KDL 40BX420 Black Screen Reply with quote

Picked up two tv's from a storage auction. One had a cracked screen so I gutted it and threw it away.

The second one is Sony, It has a black screen when I turn it on I can see a very faint change in color on the screen, it has sound. When i open it I can see the white light behind it blinking?
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kuhurdler



Joined: 28 Dec 2006
Posts: 2852
Location: Overland Park, KS

PostPosted: Tue Feb 25, 2014 4:03 pm    Post subject: Reply with quote

is the white light the backlight?
redwolf7374



Joined: 22 Jan 2014
Posts: 17
Location: Texas

PostPosted: Tue Feb 25, 2014 4:05 pm    Post subject: Reply with quote

Yes, you know when you take the back off and all the vent holes you can see the white light on in the holes. I can see the light blinking.
redwolf7374



Joined: 22 Jan 2014
Posts: 17
Location: Texas

PostPosted: Sun Mar 02, 2014 9:02 am    Post subject: Reply with quote

Nobody?
JTS1957



Joined: 21 Jan 2009
Posts: 2286
Location: Far, Far Away

PostPosted: Sun Mar 02, 2014 10:27 am    Post subject: Reply with quote

Enable line to inverter changes as light blinks?

Could have one or more bad electrolytic capacitors.
If two sets were both mishandled, could have broken ccfl bulb(s).

Do blinks occur at a steady rate or are they random?
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redwolf7374



Joined: 22 Jan 2014
Posts: 17
Location: Texas

PostPosted: Sun Mar 02, 2014 2:31 pm    Post subject: Reply with quote

It's a constant flash like a strobe light.
redwolf7374



Joined: 22 Jan 2014
Posts: 17
Location: Texas

PostPosted: Sun Mar 02, 2014 2:37 pm    Post subject: Reply with quote

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JTS1957



Joined: 21 Jan 2009
Posts: 2286
Location: Far, Far Away

PostPosted: Sun Mar 02, 2014 3:21 pm    Post subject: Reply with quote

Will set run with one end (either end) of the flat white ribbon cable in center of pix disconnected? If Yes, does it still flash?
redwolf7374



Joined: 22 Jan 2014
Posts: 17
Location: Texas

PostPosted: Sun Mar 02, 2014 3:23 pm    Post subject: Reply with quote

Yes still flashes with the ribbon disconnected.
JTS1957



Joined: 21 Jan 2009
Posts: 2286
Location: Far, Far Away

PostPosted: Sun Mar 02, 2014 3:27 pm    Post subject: Reply with quote

You never answered:
Quote:
Enable line to inverter changes as light blinks?
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