Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP!

[nittiondabeet]

I have had this Tv going on 4 years now. No problems at all until last week. Why I am not sure if this is fixable or not, is that it comes and goes at random, one minute the tv has perfect picture, next minute it turns to what you see in picture #1, Doesn't matter if its the first time you turn the tv on, or leave it on for 8 hours, The randomness is what stumps me. I have included detailed photos of every board in the tv, and have tried to visually see any issues or defects on the these boards. I don't see anything burnt or possibly causing an issue. My main question is do you think this is IR is permanent or can be fixed?

Please see 1st picture is basically what I am getting on every input on the TV, I have tried using HDMI, VGA, COAX inputs, Also used different devices, cable box, xbox, ps3, pc. ALl give me the same problem, so I know its the TV. I apologize if this fix has been posted else where.

Thank You!

[tom66]

Re: Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP

Looks to me like mal-discharge/underdifussion. Not IR or burn in. Very likely to be fixable, there is a common issue on these which looks similar caused by cracked solder joints.

Do you have a digital multimeter available?

[nittiondabeet]

Re: Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP

Yes I do. Just curious where I should start checking.

[mmartell]

Re: Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP

I would say z sustain, third pic, but tom will set you straight. Not sure if it's wise to throw a hair dryer at it for too long but that might help you see the fault or cure the fault so you know you are in the right location.

[tvrepairguy]

Re: Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP

i was thinking it might be the y sustain boards. they control the vertical lines. i would check the main y sustain board. fastest way is to replace y main and the inverters. like the guy above said too, i've read a lot of tom66's posts and he can set you straight.

[tom66]

Re: Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP

Plasma TVs don't use inverters... the Y-sustain drives the scan and sustain but the Y-buffer is for the vertical scan more than the Y-sustain is...

Anyway, I would try re-flowing the solder joints on the three coils between the black and silver heatsink here
https://www.badcaps.net/forum/attach...5&d=1410363796

And the same here
https://www.badcaps.net/forum/attach...9&d=1410363796

Given it is a common issue.

[zacheriaj]

Re: Lg 60" Plasma 60PV450 IR, or Bad Board? Displays "trippy" colors. See Pix! HELP

also check the small axial fuses next to the main power connectors on Y and Z board. z sustain usually has more than one but i'm only seeing one unless it's hidden under a heatsink.