Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

[Diah]

Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

I didnt think of that possibility, your replacement powerboard should be very much like this: https://www.shopjimmy.com/sharp-runt...ply-led-board/

if his PSU replacement match.. then the blown fly out MB NOR start script too.

[sefoster]

Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

if his PSU replacement match.. then the blown fly out MB NOR start script too.

My replacement is a match I ensured before I bought it that it was the same one. even with our new power board and original t-con we had the same issue. We replaced the t-con due to a suggestion from a different post somewhere else. However I need to replace the main board as there are burn marks on that now that weren't there before

[Diah]

Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

before you are going to replace MB, need to check the currents on both LED BL sockets.. by each group of LED 1 till LED6. be ware on + & - and note each time when you turn on yours DMM reading for each group.

[sefoster]

Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

There is a spot on the MB that is now burned and it wasn't;t before so I am assuming I will need to replace it as I am not skilled enough to fix anything on there. This is still new to me and I don't want to mess anything else up as I'm not sure of how exactly to test each section. Like I said I'm a newbie so this is a first for me