le40m86bd on only with power button pressed down

[zomi]

le40m86bd

Have repaired the psu.

Have swapped out the main board with a known working one set works fine.

With the original board.
Have replaced the eprom.

But set will only power on by keeping the power button pressed then letting go once the picture comes on..

Without doing this it keeps cycling though the power cycle
And failing to power on..

Any ideas...
Will upload pictures in the morning...

[zomi]

Re: le40m86bd on only with power button pressed down

Sorry forgot to add main board is BN41-00813B

[KevinCro]

Re: le40m86bd on only with power button pressed down

Do you have to hold the remote button down or does it work at all?

[zomi]

Re: le40m86bd on only with power button pressed down

Sorry I don't think it was clear

The actual power button on the front of the lcd itself
not the remote.

once run and i power off it starts to cycle again and only powers on by
hol down the power button on the front of the lcd

[zomi]

Re: le40m86bd on only with power button pressed down

Once powered on like that it seems to run fine.
Just had it running for about 1-2 hours so far no issues.

[tom66]

Re: le40m86bd on only with power button pressed down

Hmm, could be intermittent power button PCB. Try cleaning...

Have you tried service menu reset?

[zomi]

Re: le40m86bd on only with power button pressed down

Just to update:

the power was on the main board

After running for a for few hours.
It abruptly turns off and then displays rainbow colored vertcal lines.
I think its a bga issue ? on this one ?

Replacing the main board with a known good one
fixes the issue.
so I think its safe to assume a new board is needed..