Panasonic TH50PX60U 10 blinks does not power on

[GabrielM]

So I've got this tv that stopped working a couple years ago, finally getting around to seeing if it can be fixed. When it broke down it started by randomly turning off and then one time never turned back on.

When I plug it in I hear two quick clicks, a very slight pause and then another click. The red led repeatedly blinks 10 times, no fans come on.

I've taken a couple basic electronic courses but this is my first attempt at a repair. I've found a couple flow charts that I'll try to work through but any advice or recommendations would be helpful. I only have a multi meter so I'm not sure how much I can troubleshoot.

I suppose even if it can be just narrowed down to a specific board I'd be willing to take the ~$50 gamble on replacing it.



The P board (the 3 large capacitors at the top right are very slightly bowed)


The PA board


The H board


The SS board


The SC board


Thanks

[Moreno83]

Re: Panasonic TH50PX60U 10 blinks does not power on

Cool that you kept this tv for all those years!

10 blinks is usually the power supply , this power supply looks like it has the FETS on the bottom of the board?

[martino]

Re: Panasonic TH50PX60U 10 blinks does not power on

Does this have the 2 little print boards that stand up on the power supply> MC301 and MC201?
If it does,take a can of air(pc duster can or alike),hold it upside down and spray some of the freon onto those two boards,so it freezes,then try to turn on the tv

[ReeceyBurger123]

Re: Panasonic TH50PX60U 10 blinks does not power on

does this have the 2 little print boards that stand up on the power supply> mc301 and mc201?
If it does,take a can of air(pc duster can or alike),hold it upside down and spray some of the freon onto those two boards,so it freezes,then try to turn on the tv

+1

[GabrielM]

Re: Panasonic TH50PX60U 10 blinks does not power on

Does this have the 2 little print boards that stand up on the power supply> MC301 and MC201?
If it does,take a can of air(pc duster can or alike),hold it upside down and spray some of the freon onto those two boards,so it freezes,then try to turn on the tv

Like these?

MC301


MC201 (bottom)


I'll have to pick up a can. Should the grey paste be removed first?

[cliff_hootarski]

Re: Panasonic TH50PX60U 10 blinks does not power on

Bottom picture, bottom daughter card, spray the chip on the right side that is oriented up and down, also the small brown cap that is just to the left of that chip towards the top of the board.

[vinceroger69]

Re: Panasonic TH50PX60U 10 blinks does not power on

in this video you will see the capacitors that need to be removed/replaced some people just remove the capacitor and the set works fine i dont think many people change the ics i never have had too.
https://www.youtube.com/watch?v=LjpGKaBt8hg

[tvtimmy]

Re: Panasonic TH50PX60U 10 blinks does not power on

+1
I just change the cap, never found a bad IC chip(4 of these so far).

[GabrielM]

Re: Panasonic TH50PX60U 10 blinks does not power on

Okay so I tried the freeze test on MC201, and MC301. Nothing happened unfortunately. Where to go from here?

[tvtimmy]

Re: Panasonic TH50PX60U 10 blinks does not power on

I would try replacing the two capacitors with these.

You can mount them with some small wire to the pads and zip tie them to something out of the way.

[GabrielM]

Re: Panasonic TH50PX60U 10 blinks does not power on

So its been I a while but I have some free time to take a look at this tv again. I'll be honest I'm overwhelmed by how complicated these tv's are and don't really have the experience to go testing stuff.

The last thing I tried was the freeze test on MC201 and MC301, which was unsuccessful.

I found a P board on ebay and was considering just trying replacing it.

Does anyone have any input or recommendations?

[GabrielM]

Re: Panasonic TH50PX60U 10 blinks does not power on

Bump...

Getting close to wanting to throw this thing out. Anyone else care to offer some input?

Thanks

[GabrielM]

Re: Panasonic TH50PX60U 10 blinks does not power on

Bump...

Any other input?

[tvtimmy]

Re: Panasonic TH50PX60U 10 blinks does not power on

In the video they show the caps that go bad. You can just remove them and try to turn it on. Maybe check the fans?

[GabrielM]

Re: Panasonic TH50PX60U 10 blinks does not power on

In the video they show the caps that go bad. You can just remove them and try to turn it on. Maybe check the fans?

Thanks. I removed them but it doesn't seem to fix the problem. I also found 0V at pin 1 of p10 of the P board (supposed to be 14V). The flow chart suggests that the P board is at fault.

I've found a site that sells these parts fairly cheap so I'm probably going to just order a few boards since they do free shipping once you spend $75.

From what I understand its most likely the P board, but I am also going the order the PA board, D board, DT board, DG board, and H board.

However I've heard that the SS and SC boards sometimes also trigger a 10 blink, these are more expensive. Is there a way to confirm that these are okay?

Thanks again.