Haier LE46A2280 all remotes (any button) cause volume to go up.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

So, there were 3 bad resistors on the key control board. One was a 20k, two were 3k. I was able to find a 20k on another board. Couldn't find any and 3k resistors, but I did have some 1.5k through hole resistors. As you can see from the pictures, I made it work with what I had. My girl will be quite happy to get this back tomorrow. The only bad thing is she wants to keep the 32" Seiki I loaned her. I should have seen that coming.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

I just knew it had something to do with that goo.

[CapLeaker]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

perfect ending!

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

Solved! It was the conductive goo that dripped into the connector. Pulled all the wires out of the connector and cleaned everything real good, now it works perfectly again.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

I think I might have it figured out. The wire connector going into the IR sensor board has some of that oily stuff in it, and it's conductive. With the harness removed from the TV and nothing connected I should see OL when probing different wires, but instead I'm seeing between 1MΩ and 20MΩ. I'm going to clean it up and see what difference it makes.

[R_J]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

Yes, not very likely the eeprom, I just saw it was available from shopjimmy.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

If you disconnected the switch board from the main and the vol still climbs up to 100% it can't be on switch board at fault. I do see mainboard eeprom available so maybe thats where the fault lies?

I'm on my way to get it now. As for the eeprom, I thought that at first, but then it started working fine for a couple days. With a corrupted eeprom I'd expect it to remain faulty until it was replaced.

[R_J]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

If you disconnected the switch board from the main and the vol still climbs up to 100% it can't be on switch board at fault. I do see mainboard eeprom available so maybe thats where the fault lies?

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

I am almost certain that leaking stuff got into the micro-switches. Clean up the 'mess, and give the switches a good spray with some ISA and then a dose of an electronic cleaner trying to get into the switches. Or perhaps a change out of the switches. They most likely would be the 2-pin type.

Locate the board for the buttons and unsolder the vol up tac switch, this should allow the other buttons to function and prevent vol going up. If this solves the issue replace the tac switches
If there is any of that goo on the switch board wash and dry it.

I removed that board completely yesterday. Still doing it. I'm going to pick the TV up in a few minutes and then I can do some actual testing. Below is a pic of the switch board. I definitely see some bad resistors. As for the switches, I have some of them, brand new, because I needed one for my car alarm remote once and ordered like 25.

[R_J]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

Locate the board for the buttons and unsolder the vol up tac switch, this should allow the other buttons to function and prevent vol going up. If this solves the issue replace the tac switches
If there is any of that goo on the switch board wash and dry it.

[Andrew F. Ali]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

I am almost certain that leaking stuff got into the micro-switches. Clean up the 'mess, and give the switches a good spray with some ISA and then a dose of an electronic cleaner trying to get into the switches. Or perhaps a change out of the switches. They most likely would be the 2-pin type.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

eww! looks like some one tried to clean the tv and used too much water / cleaner that ran down.

I asked her if she spilled something in it, or sprayed it with anything. She said no and she bought it new. There's places where the plastic is bubbled too. It sat in a Uhaul storage room for almost 2 years. Steel building and no climate control. That probably didn't help.

[CapLeaker]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

eww! looks like some one tried to clean the tv and used too much water / cleaner that ran down.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

Oh, it probably helps if I add the pictures.

[CapLeaker]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

i don't see any pix?

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

So, the TV worked normal for a few days, then started randomly turning up to 100 with nobody touching the remote. I opened it up and disconnected the key control board, but it didn't change anything. What I did find is a brown oily condensation inside the TV. I'm pretty sure it's leaching out from the plastic. Pictures attached. It's totally unwatchable now so I'm going to give her something else and then try to figure out what is causing this. I think maybe a failing component on the IR sensor board. Since the key control passes through it, maybe maybe something along it's path is bad. Maybe whenever the IR sensor is on, it's providing a path to ground for some other failed component. Idk. I'll probably have it in the shop tonight and then I can do some actual testing and troubleshooting.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

So, at least for the moment, the TV has gone back to normal. That rules out the EEPROM. I think maybe since the button board was causing problems originally, and it runs through the IR sensor board, that maybe I'll try disconnecting it if the problem reappears.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

It's a wise man who knows his limitations.

Learned the hard way. Lol.

[dick_barton]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

If I leave her all day without a TV, I may not have a home to go back to.

It's a wise man who knows his limitations.

[lookimback]

Re: Haier LE46A2280 all remotes (any button) cause volume to go up.

If you disconnect the IR board will the side buttons work?

From looking at pictures on eBay, it appears the button board connects through the IR sensor. Unfortunately, I can't open the TV until I get her a loner. If I leave her all day without a TV, I may not have a home to go back to.

I have a 47" LG which needs an LED repair, and I just found a complete backlight assembly in my scrap pile, so I'll probably get that together for her and then start troubleshooting the Haier.