LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works again!

[Almared]

Hi TV tech experts! I'm hoping to find a solution/explanation to a problem I have been having lately with my LG plasma. First I noticed at early in the morning and while the TV is on standby, it would start clicking by itself until I pull the power plug out. Then soon after the TV would refuse to start and clicks a bit twice or three times then it work fine again and up till now it never shuts off once it works for few minutes.

I opened it up and checked for any bad caps but nothing looks suspicious. I looked everywhere and didnt hear about anyone having the clicking noise when the tv is on standby. Also why does it sometimes click when I tuned it on then it starts after multiple tries (usually less than 5 tries)? I think it's going to eventually fail and any help will be great. I attached some photos of the different boards.

Thanks in advance!

[Nick's Tvs]

Re: LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works ag

It sounds like you could have a cracked solder joint on your power supply. Check the transformer and anything close to the heat sink on the PSB
I would also suggest doing the same for your Y-sus and Z-sus

[dick_barton]

Re: LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works ag

I would also give the boards a good clean in the event that something is tracking across the dust deposited on the boards. Not highly likely, but possible.

[ReeceyBurger123]

Re: LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works ag

IMO bga solder issue on the XD engine main processor due to poor heat sinking. Could also be cold solder jojnts on Psu. You need to test what the Vs/Pson signals do when it faults out.

[Almared]

Re: LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works ag

I took the TV apart and gave the power supply and the board on the right a good clean with a soft brush and a vacuum cleaner. I checked all the solder points and I did find some that were lightly cracked so I re-soldered all joints together. I chaecked Vs and Va voltages on the power supply and they were like stated on the sticker 60.6V and 203.9V. Standby voltage was also ok 5.1V and also 17V. I put back the TV again and started my PS4 and all were good until about 10 min in the game the I heard the damn click and TV turned off and heard the clicks a few times again until it worked again. Any more thoughts? Could it be a voltage regulator? I dont have the values of those because I checked the two big voltage diode rectifiers and the voltage wasn't steady and was going up and down from 297v to 303v if I remember correctly. I dont know what the voltages should be and if they should actually stay steady.

[Almared]

Re: LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works ag

the XD engine CPU I assume is found on the motherboard that also has all the connectors to the TV. I ordered this used motherboard and will give it a go.
http://www.ebay.com/itm/LG-50PK350-M...IAAOSwaB5XrUxD
My TV is 50PK250 and this is for 50PK350 but it looks 100% like mine and also has this same number PD01A. The EXD number for the doner is EXD61366604 (0) while mine is EXD61366607 (0)

[Almared]

Re: LG PDP50R10000 Clicking on standby and sometimes turns off by itself but works ag

Update: the TV now is worse. Now even when it's on for a while it shuts off and restarts but then it clicks much more times before it works again. I think it's going to shut down for good soon. Could it be a problem with y sus board given that the psu is working fine and the clicking also happens when the tv is on standby? if it was the motherboard, why would I hear clicks while the TV is on standby unused and why it began doing the clicking very early in the morning around the same time every day?