Sharp LC-70le550u back light flashes

[budm]

Re: Sharp LC-70le550u back light flashes

Hard to troubleshoot without the pictures of the boards, the labels of the pins on the connectors, and how all the boards are connected together.

[nwcs]

Re: Sharp LC-70le550u back light flashes

Sorry it is getting so long in between posts but this is now my TV so it is a low priority. The V does not light up at all, checked all voltages and I only have 5V at pin 15 and 1.5v at pin 13 of large connector going to the main board. Checked the diodes and I am not sure where to check on the transformers.

[nwcs]

Re: Sharp LC-70le550u back light flashes

I finally got in a new power supply and main board since both were bad. I still have no video unless I unplug the right side of the tcon board (from back) then I get horizontal lines in the picture and I only got that once while it was on it's face. I do get almost every time briefly lines in the bottom of the right side of the screen with the right tcon ribbon unplugged.

[nwcs]

Re: Sharp LC-70le550u back light flashes

Unplugging the corner cable on the right hand side produced vertical colored lines and nothing if I unplug the left side. Tcon was hooked up when I did this.

[budwich]

Re: Sharp LC-70le550u back light flashes

:-( I think you have "significant" driver issues.... both horizontal and vertical.

[nwcs]

Re: Sharp LC-70le550u back light flashes

I am not sure what you mean. Is this possibly a bad Tcon board?

[anthonya661]

Re: Sharp LC-70le550u back light flashes

I also have a sharp lc-60le550u powers up pic comes on then fades away. it was the main board replaced it and it works great now

[Vxavier]

Re: Sharp LC-70le550u back light flashes

I have a sharp LC-70LE660U, replaced Tcon board still no image.
Reseated cables got image powered down and back up no image and ideas?