Thanks to this thread:
[url]https://www.badcaps.net/forum/showthread.php?t=35841[/url]

I found the manual and the picture that shows the panel 12v 34pin detection failure.

I do not know how to go about checking this.

I bought a replacement powerboard online and it still did not fix the problem, so I am wondering if its the mainboard, but I do not want to waste my money if this wont fix it either.

I tried getting into a service mode, but can not.

Freakaft8 has some useful info in this post about the blinking issue...

Re: Sharp Aquos LC-60LE745U Two Long Two Short

Thanks I found the service manual earlier in the thread. But like the original poster I am not an tv repair person. I can solder and use a multimeter but do not know where to start.

Re: Sharp Aquos LC-60LE745U Two Long Two Short

I have the close to the same tv, mine is LC-60LE640U and it blinks 2 and flashes 5 times. I ordered a replacement powersupply which did not fix the error.

I am trying to figure out if the replacement board was bad or if there is some other cause for the error.

This thread is the closest I could find on the interwebs to a discussion on the power issues with these tvs.

Thanks ahead of time for not screaming at me for reopening a 2 month old can of worms.