Re: Panasonic Plasma TC-P42UT50 flickering during warm up (also shutdown 7 blinks)

Thank you guys, I think I'll look for a reball or reflow service while I look for a new board.
I'm afraid to reflow using a heat gun air and bottom heater is also a problem cause there are some very tiny components under the chip (board).
I'll also buy a decent heatsink

Re: Panasonic Plasma TC-P42UT50 flickering during warm up (also shutdown 7 blinks)

ReeceyBurger,

I've worked again and all boards looks fine, VSUS, 15V, 5V, Vad, all looks fine (except main board).
I think you were right, I don't have right tools to troubleshoot BGA so I tried to keep one chip cold using a ice cube water inside a plastic bag (I know that looks weird).

I kept the ice on one chip during 3 minutes and TV works , when I remove the ice, after 1 minute the issue happens again.
I tried again and kept the ice during 5 minutes, again...

Re: Panasonic Plasma TC-P42UT50 flickering during warm up (also shutdown 7 blinks)

I've tried some initial troubleshooting with no luck.
So I found used SS and YSUS with a good price and I decide to try replacing those parts cause those are the most probably cause for 7 blinks.

I beleive it is probably a energy surge or discharge coming from one of those boards or power supply.

How can I troubleshoot BGA issue on A board? And why it happens every time at the same time? Not intermittent.

Hello,

When I power on the TV, after almost 1 minute (between 50 to 80 seconds) the image flickering and disappear for a while (1 to 2 seconds), sometimes the TV shutdown and front LED blink 7 times.

When the TV recover from flickering it works perfect for hours.
The issue happens when the TV is off for more than 5 minutes, it means when the TV is cold and caps are discharged.

I bought SS and YSUS boards from a guy who broken the TV, 2012 Plasma troubleshoot guide says 7 blinks could be and issue with SU/SD, SC and SS boards, I replaced both with...

Re: New Members - please post your introductions here

Hello Team,

I'm Leonardo from Brazil.
I have 3 plasma TV and love to repair my electronics by my self!

Re: New Members - please post your introductions here

Hello team,

I