resistor blown frequently

That blue component is a varistor, which is supposed to absorb large voltage spikes.
The designers obviously expected initial in-rush voltage spikes, and that was their effort to deal with them.
If your TV is otherwise working, I suspect other components in the circuit are wearing-out through age, and the voltage/current spikes are increasing.
I'd take a look at what else is in-line with your resistor/varistor, and try to determine the cause.

 

Definitely.

Martin

 

What is the value of the resistor?

 

You have to work out if it is metal film or carbon.
Metal film will be say 1 watt and carbon will be 0.5 watt.
You can do a couple of things.
If it is metal film, use 2 x 22R 1 watt metal film in series.
Or 4 x 47R carbon in series parallel.

 

Is the resistor in series with that blue thing?
Is the resistor ORIGINAL

 

Firstly you say they are in series and now you draw them in parallel.

Nothing is making any sense.

 

I think what Colin is trying to get you to understand, is that because you already replaced your resistor, you may have replaced it with one that has the same resistance, but does not have the original wattage capability.
If that is true, your resistor keeps burning-up, because it can't handle the wattage.
You may not know the composition of the original resistor (what it's made out of), or that of the replacement resistor.
Logically then, it is possible your resistor won't burn-up anymore if you replace it with a resistor capable of handling the original wattage, or something bigger (wattage, not resistance).
I think Colin is just trying to help you determine if a low-wattage resistor alone, is the source of your problem.

 

Two 22 Ω resistors in series is 44 Ω, close enough to the 47 Ω that is burning up, but twice the wattage capability of a single resistor.
Two 47 Ω resistors in series, paralleled with another two 47 Ω resistors in series, will be 47 Ω but with four times the wattage capability of a single 47 Ω resistor.

 

Did you replace the MOV? If it's dead, the resistor will most likely keep burning up.

I found the service manual, but in their wisdom they don't include the PSU schematic, just everything else.
Here's the manual, FWIW, (you'll need to download the free DejaVu viewer to see it though):-
http://elektrotanya.com/lg_22lg30r_ch_lp81k_sm.djvu/download.html