Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

[techjap]

Hello everyone, I got a 60" Sharp Aquos for free from someone on nextdoor. When it's powered on I can see the HDMI wording on the screen for about a second then the backlighting turns off. Can still hear audio but no picture is visible even with an LED flashlight on the screen. I don't see any leaking capacitors, disconnected all cables and reconnected. The only way I have been able to get the backlight to remain on is by disconnecting the 2 cables coming out of the bottom of the tcon board.

I'm stumped not really sure what to do next.

Pictures are attached. Thank in advance for any help.

[budwich]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

disconnect only one of the tcon to panel cables at a time and see if the display happens.

[techjap]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

I tried one at a time to panel and still no backlight. Only backlight with 2 at bottom disconnected.

[scottmet]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

according to the other thread that was started for the same problem might be the main board. See.

https://www.badcaps.net/forum/showth...ht=LC-60C6600U

[budm]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

https://www.badcaps.net/forum/attach...9&d=1523148159
Pictures are not clear enough to read any texts printed on the board.
I need to be able to read the board part number, the pin name for each pin of the connector, etc.

[CapLeaker]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

On this one it would be very handy if you can get your hands on a oscilloscope and check the lvds with it.

[budwich]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

check the fuse on the tcon.

[techjap]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

according to the other thread that was started for the same problem might be the main board. See.

https://www.badcaps.net/forum/showth...ht=LC-60C6600U

Thanks!

[techjap]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

Hopefully these are better. My s5 camera sucks.

https://www.badcaps.net/forum/attach...9&d=1523148159
Pictures are not clear enough to read any texts printed on the board.
I need to be able to read the board part number, the pin name for each pin of the connector, etc.

[techjap]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

Ok I guess I didn't check each cable individually like I thought I did! I must have just tried with bottom right cable disconnected because I just tried again and now it will come on with the left bottom cable disconnected. I now see part of the Sharp logo on boot up but there are lines alternating. Pictures attached.

[budwich]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

so you are saying. that the otherway around, there is no picture. �� if so, and probably thep posted pictures kind of confirm... you have panel / tab problems that are associated with the half that you see the vertical lines on. check the tcon to panel cable again.... both ends to ensure they are seated correctly.... otherwise you are likely out of luck.

further i would. redo the cable check that i suugested earlier as i would havef expect a better result the other way around. stiill further if the other way does not work, then look / check some of the capacitors on the bottom edge boards... they could be gone but may be fixable.

[techjap]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

The TV will only show a picture with the left bottom tcon cable disconnected. If I try it with only the left cable connected I don't get any backlight or picture after the initial screen flash.

So it's not likely just a bad tcon board? Should I try the hooking up the right side cable on the left connector and see what happens?

[petehall347]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

check if mirror imaged connectors and any other differences before you try that

[budwich]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

no don't "cross swap ends" as the circuitry is not "symetrical". it is quite likely you have some bad smd caps on the edge boards.... people have been successful at replacing them on set if you are good with a soldering iron.

[techjap]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

no don't "cross swap ends" as the circuitry is not "symetrical". it is quite likely you have some bad smd caps on the edge boards.... people have been successful at replacing them on set if you are good with a soldering iron.

Ok the edge boards are the ones in the pic I just took?

[budwich]

Re: Sharp 60" TV LC-60C6600U screen flash on power on then no backlight or picture

so you need to check some of those components and compare (ie. since you have similar components on each side / edge board).... this may point to a failed component that you may be able to replace.