HP PL5060N - Loud snap - very dim picture

[smartjohn]

I bought this set for $50 and the owner said it quit with snap or bang. It powered up but had a very dim washed out picture. After checking some other posts and tapping around the set, I could get the picture back partially if I tapped the upper module (YPPD-J015C) of the Z Sustain (Z_SUS) board. I replaced this module back in September, 2014 and the set worked great for 6 months at my son's house. He called me just before March Madness and said, "Dad help! it died again!"

My suspicions were correct as it was the same failed YPPD-J015C module on the Z_SUS board. Because I believe this is a heat related failure and I am not one to keep fixing a repeating problem, this time I decided to mount a 12 volt fan on the heat sink. The set uses the LG part # 6870QZC004C Z_SUS board. Here's my YouTube video on the fix for the module: https://youtu.be/F4hvDi18AzM I hope this helps someone else looking here for a more permanent solution !!

[smartjohn]

Re: HP PL5060N - Loud snap - very dim picture

So this set has blown the YPPD-J015C module on the Z-SUS board at least 3 times. Last time replaced the complete Z-SUS. The set ran OK for about 15 minutes and then went dim but now it has a wide vertical bar. I am reading this points to the Y-SUS or buffer boards. I tried isolating each buffer I still have the vertical bar on 1/2 screen. I then replaced the YPPD-J015C on the Y-SUS. Now the power supply is cycling on/off with a click every 5 seconds. I can see 5V and 9V come up then drop. I never get Vs, Vsus or 24V to come up. any ideas?

[smartjohn]

Re: HP PL5060N - Loud snap - very dim picture

I finished this on another thread: https://www.badcaps.net/forum/showth...984#post630984 Turns out I replaced the Y-sus IPM with a bad YPPD-J015C module. AND the MOSFETs were blown on the lower buffer board. Details at the end of the quoted thread. I really like these TV's for the picture quality. I'll keep nursing this one on as long as I can!!