LG 50PK350 Clicking

[Easky15]

Hi, I have this 50 inch LG plasma TV and when i try to turn it on it clicks then then the screen flashes quickly on then off again, It repeats this a second time then just clicks a few times. Can anyone suggest how I troubleshoot this set? Here is a video showing the fault and also a few pics of the back of the TV,

http://tinypic.com/r/2u5rxxt/8



https://lh6.googleusercontent.com/-z...217_225601.jpg

https://lh5.googleusercontent.com/-s...217_225545.jpg

[sordids999]

Re: LG 50PK350 Clicking

have u checked any voltages ? VS/VA on the power supply readings ?

[Easky15]

Re: LG 50PK350 Clicking

VA reaches 60 then quickly powers off, VS reaches 208v

[sordids999]

Re: LG 50PK350 Clicking

so VS is steady but VA drops ?

[Easky15]

Re: LG 50PK350 Clicking

No they both drop when the set clicks off.

[tom66]

Re: LG 50PK350 Clicking

Checked the common 22 ohm resistors for possible signs of failure? (They usually fail open)

[Easky15]

Re: LG 50PK350 Clicking

Where is the 22 ohm resistor? Sorry I'm not the best at fixing these, I just come on here and ask the experts then do what they say.. :-)

[tom66]

Re: LG 50PK350 Clicking

Power board, two white devices marked "5W22RJ" or something similar...

[Easky15]

Re: LG 50PK350 Clicking

ok one is showing as 21.7 ohms and the other isn't showing anything so i guess it is blown. :-)

[sordids999]

Re: LG 50PK350 Clicking

i would change both anyway

[Easky15]

Re: LG 50PK350 Clicking

Just found a board upstairs with similar looking components, Can you look and see if they are the same, I think they are but wanna be sure.

https://lh6.googleusercontent.com/-d...218_212148.jpg

[tom66]

Re: LG 50PK350 Clicking

It looks OK. Test a few times - some resistors aren't suitable for the application they're used in and will fail after a few tens of power on/off cycles. If that's the case you'll have to order a suitable replacement.

[Easky15]

Re: LG 50PK350 Clicking

Fixed...... Thanks again... ;-)

[RJARRRPCGP]

Re: LG 50PK350 Clicking

Please attach the files, the host you used is prone to disabling images.

[Easky15]

Re: LG 50PK350 Clicking

You mean google or tinypic?? I use google cause i have my phone set to auto backup images to gogle drive so its alot easier and faster to just go there then copy link.. ;-)

[wolf1976]

hi i have the same tv and there is the same problem clicking
the one of two resistors is open i dont have change it yet to see if the problem fix
but from where can cause this problem from pure capacitors maby ?
does anyone know ?

[wolf1976]

in my case i change the faulty resistor and the problem clicking continues
the two resistors are ok now