Panasonic TH50pz85U screen flicker after power supply repair

[Trueburton]

I just recently did the Norcal175 power supply repair on MC201 and MC301 boards. Once i fired the TV back on it turns on then every 3 seconds the screen goes black then come back on then goes black again. I turned the TV on and off a couple times and now the screen seems to be working fine. Any idea why this happened?
Thanks

[tw2005]

Re: Panasonic TH50pz85U screen flicker after power supply repair

paying attention to the proximity of the P board(i.e. don't fry yourself) There's a red cluster of cabling that goes from the A - board to the D-board behind.

LVDS cale.

Give that a gentle wiggle and see if the problem replicates.

That style of connector is notorious for being problematic. If it is try reseating a few time then I tape the connector in position at both ends so it does not move.

[Trueburton]

Re: Panasonic TH50pz85U screen flicker after power supply repair

So after leaving the TV on for a few minutes, less than 10min. It shut off and gave me 4 blinks. I unplugged the TV turned back on and I get the 10 blinks again! Please help.
Thanks!

[Mrgooder]

Re: Panasonic TH50pz85U screen flicker after power supply repair

I'm curious because I may have the same problem with my Samsung PN42B430P2D. The TV turns on, but it flickers and there's this box of different coloured pixels that change colour. What's going on?

[Trueburton]

Re: Panasonic TH50pz85U screen flicker after power supply repair

Today I found Fuse F301 blown. I am 99% sure this was not blown before reassembling the power supply board. I will replace it but what would have caused it to blow?

[Trueburton]

Re: Panasonic TH50pz85U screen flicker after power supply repair

Could I have damaged the IC's I just replaced on the power supply?