HiSense 55A7500F won't obbey to remote after power on

[edugimeno]

Hi! I have this TV set that does the following:
1) I press the red power button on the remote
2) The TV turns on normally
3) After that it won't take any other command from the remote, neither power off, volume, channel, NOTHING
4) We need to either pull the main cable or use the built in button at the bottom to select funcion OFF

Then after it's off, it would again accept the TURN ON from the remote and same again

BUT:
-The remote does show the correct IR beam while observed thru a phone camera
-The TV works fine while using the MiRemote App in Xiaomi (power on, off, volume, channel, input, etc...)
-There is no pinhole RESET button in the back of the TV (neither sides, nowhere)
-There are no switches/pushbuttons at all under the battery cover of the remote

I want to try a full TV factory reset but I need the remote to work, and the Xiaomi MiRemote emulates all buttons correctly except the OK button, which does nothing (this happens to me on other emulated remotes) so I have no way to enter into the setup option.

Anyone can suggest anything to try?

Thanks in afvance!

[Diah]

Re: HiSense 55A7500F won't obbey to remote after power on

use yours mobile app + air mouse / usb too so you can inter service menu and choice from there reset chip

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

use yours mobile app + air mouse / usb too so you can inter service menu and choice from there reset chip

Hi! Can you please explain more in detail what app you mean?
Is this an Hisense app that lets you point at screen menus?

Thanks

[Diah]

Re: HiSense 55A7500F won't obbey to remote after power on

for android there are many free apps in store like Galaxy universal remote... but you wrote you are using one on xiaomi only no OK puttom.. so use it and use mouse for OK command.

by the way yours TV okay... no fault.. the fault at Hisense RC. and this knowing issue... since TV work on other IR RC app.. mean its fine.. but the original RC weak and didn't send the code correct. take out battery press power on RC for 1 minute to discharge.... open it and clean the carbon point of it as it collect Oil / dust and the Resistances of the buttons will be change so it start send different code

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

Ok so you mean use a normal wired USB mouse into the USB port and use it to click "OK"?
Also about the IR, if this remote is wrong, why does it work for turning the TV on and 1 second later it does not work for turning the TV off? How does the remote know that the TV is on and stop working? This is what I don't understand.
I did remove the batteries for a while and nothing changed

Thanks!

[Diah]

Re: HiSense 55A7500F won't obbey to remote after power on

How does the remote know that the TV is on and stop working? This is what I don't understand.
Thanks!

yours RC seem have eyes and ears

Man.. disassemble yours RC and clean it all .. it will be fine.

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

Ok I will try tomorrow both options, clean remote inside and reset TV to factory

Thanks

[Diah]

Re: HiSense 55A7500F won't obbey to remote after power on

well i am not sure if the original remote of A7500 build in on the top Microphone to guide the TV with voice command... if its so then you have at setting to disable or enable this function

[nomoresonys]

Re: HiSense 55A7500F won't obbey to remote after power on

Does seem like your remote is dirty or shot, try a different universal remote.

[jsdffxf]

Re: HiSense 55A7500F won't obbey to remote after power on

Is the remote control Bluetooth? The Bluetooth remote control can be used only if it is paired successfully

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

Ok I managed to plug a USB keyboard to it and was able to enter into the menu and select a factory reset. This changed nothing
Also I opened the remote and throroughfully cleaned all contacts (board side and rubber button side) and IC pins with alcohol, and I found it extremely clean before so I guess this changed nothing but I will try this later on today
I still resist to believe the remote is the problem. How can the remote work for turning on and then when the TV is ON it doesnt work anymore, then I turn the TV off by the panel button and the remote works again to turn on...
Thanks

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

Nah, I checked the remote with the TV, Same thing...

[nomoresonys]

Re: HiSense 55A7500F won't obbey to remote after power on

Sure, it's very possible that the only part of remote thats working is on/off.

[nomoresonys]

Re: HiSense 55A7500F won't obbey to remote after power on

Grab a replacement from ebay, got one from ebay for my old dvd/vcr player a while ago, worked fine every button, think it was about 9 dollars.

[Diah]

Re: HiSense 55A7500F won't obbey to remote after power on

upload here clear photo for yours RC

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

Sure, it's very possible that the only part of remote thats working is on/off.

Not the case, check the whole post, when the TV is off the PWR button works to turn the TV ON, but when the TV is ON the PWR button doesn't work and won't turn the TV off.

All buttons work correctly when seen from a phone camera

For some reason Im afraid a replacement remote won't help. Idk...

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

upload here clear photo for yours RC

If you mean "outside" here it is. I don't have a pic of it inside here

[nomoresonys]

Re: HiSense 55A7500F won't obbey to remote after power on

Did read the whole thread, just because all buttons are emitting a signal doesn't mean the signal is correct, have had more than a few remotes that emit signal but just didn't work.

[edugimeno]

Re: HiSense 55A7500F won't obbey to remote after power on

Just because all buttons are emitting a signal doesn't mean the signal is correct, have had more than a few remotes that emit signal but just didn't work.

I understand, but again, why does the PWR button work when the TV is off and then does not work when the TV is on?

[nomoresonys]

Re: HiSense 55A7500F won't obbey to remote after power on

I had a a bad remote that worked like that not long ago, also had one that the only button that didn't work was volume down.