My LG 50ps3000 doesn't switch on. Once the on switch is pressed, it makes a noise like it is coming on but then makes a buzz which puts it on standby

Try following the steps below.
Step 1
Press the power button once. If the TV does not turn on, observe the LED indicator, usually located on the TV's lower front panel. If the LED indicator turned off after you pressed the power button once, it is in standby mode. Press the power button once again to exit standby and turn on the TV.

Step 2
Observe the Standby light if the remote control will not work. If the Standby light stays on, the television is in Standby mode. Press the power button on the television, then try to use the remote.

Step 3
Turn the Energy Saving Switch off, then press the power button. The Energy Saving Switch is located on the rear or side panel on most Sony model TVs. Refer to your TV user manual for the exact location of the switch.

Lg 50ps3000 manual can be found here:

http://www.lg.com/uk/support-product/lg-50PS3000

Open the dryer door and slowly rotate the dryer drum in a counterclockwise (CCW) direction. Rotate the drum 2-3 revolutions and then shut the door and see if it will start. If it continues to just hum and not start could indicate a voltage issue, motor issue or a friction issue. Open the door again and locate the door switch plunger in the upper or lower corner on the hinge side of the drum opening. Hold the plunger in while someone begins rotating the drum counterclockwise. While turning the drum counter clockwise and holding the door switch plunger inwards press the start button. If it starts, there is likely a friction problem or motor problem.
What is the model number?

Why is it always Rheem problems?
Every water heater problem is Rheem.
And Rheem doesn't post any service manuals, like the other two big manufacturers, AO Smith-American, and Bradford White.

Copy following link for troubleshoot by gas control valve.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Scroll up and find pressure switch heading among links.

You can install gas control valve yourself.
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Set is in protective shutdown--best thing is to take to a shop and get an estimate.

A common cause are failure of decopling capacitors in the audio section, and or the circuit board power distribution that feeds the audio board. Most of the capacitors are surface mount components. The standard fix is to start by changing the circuit boards that have the defective parts.

If the set is under warranty, call for warranty service. Out of warranty service is expensive for these TV sets.

Jerry G.

it could either be a bad door switch or something stuck in the pump or a bad pump.if you set it to drain/spin will it drain out the water or does it buzz there?if it does drain i'd have to say you have a bad door switch.the model number you sent doesn't come up,you can unplug the machine,remove the hose that goes to the pump or run it before you unplug it and see if it's the pump making the sound or if the center of the pump can be removed to clean out the pump and check the pump for coins and junk,use a shop vac and vac out all the water in the tub and then lossen the hose or center of pump until water starts to leak out and vac it up as it comes out,check the pump and put it back together,add some water with a bucket or something and see if it drains out,if it doesn't drain and it sounds like the pump is making the noise you have a bad pump,if it buzzes and it's not the pump change out the door switch.the buzzing is electrical,things that could make this sound are the motor,the solenoids on the water valve or the door switch,if you can do some checks like see if it drains or try to find where the noise is coming from would be helpful.good luck and i hope this helps you out.

I also have an LG TV. I used this 4 digit code: 0742.

TO PROGRAM THE remote USING THE 4 DIGIT CODE:

1. Turn your TV on.

2. Press tv on your Sky remote control.

3. Hold down select and the red button together for about two seconds, until the red light on the Sky remote control blinks twice.

4. Press tv on your Sky remote control again.

5. Key in the four digit code for your brand of TV. The light on the Sky remote control blinks twice. If the light blinks once only, recheck the code for your brand of TV and start again at Step 1.

6. Press the standby button on your Sky remote control. If your TV switches off, press select. The light on the Sky remote control blinks twice (code stored). If your TV does not switch off, press tv, then press the standby button. Repeat this (press tv, then standby) until your TV turns off, then press select (stores code).

If the humming noise is coming from the water inlet valve . Shut water of remove hoses clean the little screens inside valves make sure u put them back as they r in the unit for a reason.put hoses back on and turn water on give it a try.....Good luck

Sounds like a bad ac adapter. You should buy a replacement.