lg 50pg4000 loses sound remote stops working and switches off

[wreksta]

Re: lg 50pg4000 loses sound remote stops working and switches off

it does mate ill try that

[wreksta]

Re: lg 50pg4000 loses sound remote stops working and switches off

cant get remote working now at all meaning none respondant

[Ltank]

Re: lg 50pg4000 loses sound remote stops working and switches off

The remote board wires go to a different section of the main board that the audio. If it goes out after warmed up, I would try freeze spray on the voltage regulators and audio chip. When the audio drops out what is the voltage to the chip? The preamp IC has a lower voltage than the audio amp. Check both while your there. Do you loose the power to the IR remote rcvr facing the front of the set? I am responding from my phone so I am unable to look at a schematic.

[Ltank]

Re: lg 50pg4000 loses sound remote stops working and switches off

A fast and easy test is to unplug the IR from the main board and use the buttons on the set for on/off and volume up/down. If the board is bad it can cause these problems

[wreksta]

Re: lg 50pg4000 loses sound remote stops working and switches off

The remote board wires go to a different section of the main board that the audio. If it goes out after warmed up, I would try freeze spray on the voltage regulators and audio chip. When the audio drops out what is the voltage to the chip? The preamp IC has a lower voltage than the audio amp. Check both while your there. Do you loose the power to the IR remote rcvr facing the front of the set? I am responding from my phone so I am unable to look at a schematic.

once I lose sound the remote works tv led flashes to show this but will not do the functions pressed

[tom66]

Re: lg 50pg4000 loses sound remote stops working and switches off

Which indicates it's receiving the instructions but discarding or ignoring them - the main board is at fault. On some of these main boards, there's a SUB MICOM for processing IR, standby and LED functions. The SUB MICOM connects to the main processor by I2C interface, typically. If there's a problem with the main processor or the interface, this effect might be observed.

As for repair? Main board swap is probably the only thing that can be done.

[wreksta]

Re: lg 50pg4000 loses sound remote stops working and switches off

tom got a hairdryer is it worth trying it

[wreksta]

Re: lg 50pg4000 loses sound remote stops working and switches off

cant even try factory reset from service menu as cant get in just yet takes ages to get the remote working

[tom66]

Re: lg 50pg4000 loses sound remote stops working and switches off

Well as the fault is caused by it running for a long time, and hence heat likely, then a hairdryer will probably make the problem worse. If you can't do a factory reset then there is no option but a board swap.