Le32a553 Button Board Failure Help ?

[ReeceyBurger123]

Hello chaps, diagnosed a faulty button board in this tv. What could cause the button board to change channel, volume etc. Seen this before never been able to sort it. Any advise is appreciated thank you.

[johnboy1313]

Re: Le32a553 Button Board Failure Help ?

Any pics of the dud board?

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

1.

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

2.

[budm]

Re: Le32a553 Button Board Failure Help ?

I would check the resistance between the terminals of the switches to see if it shows leakage resistance.

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

Sorry I forgot to put that, all buttons check fine its a stupid intermittent fault. I have seen switches like these go intermittent before this is going to be a pain lol. Thanks

[budm]

Re: Le32a553 Button Board Failure Help ?

The bad one that I usually found will have leakage resistance.

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

Ok bud will check tomorrow. Cheers

[flocko]

Re: Le32a553 Button Board Failure Help ?

To rule in or out buttons being at fault. unplug them and use remote to operate set ,if problem stops after being unplugged then replace button board

[comptek]

Re: Le32a553 Button Board Failure Help ?

i have had this it was one of the switches the channel would change randomly
the inside of the button is a dome silver disc through use gets inverted slightly and after a while causes the problem swopped out switches all ok

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

To rule in or out buttons being at fault. unplug them and use remote to operate set ,if problem stops after being unplugged then replace button board

Cheers

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

i have had this it was one of the switches the channel would change randomly
the inside of the button is a dome silver disc through use gets inverted slightly and after a while causes the problem swopped out switches all ok

All my buttons test fine no leakage so bit fussed on this lol

[comptek]

Re: Le32a553 Button Board Failure Help ?

All my buttons test fine no leakage so bit fussed on this lol

check cables for chafing ?
signs of liquid ingress both sides of board ?

if you look at the switches edge on like left to right to see if any are slighty down the the others they do collapse and cause problems when warm

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

Im going to try heating them tomorrow, I have already cleaned them with switch cleaner. Will let you know how it goes

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

I fixed the Tv by replacing the button board for £5 as the buttons were 99p each so not worth it. New board in and all working

[comptek]

Re: Le32a553 Button Board Failure Help ?

I fixed the Tv by replacing the button board for £5 as the buttons were 99p each so not worth it. New board in and all working

well done good fix

[ReeceyBurger123]

Re: Le32a553 Button Board Failure Help ?

Cheers bud