Panasonic P board etx2mm681mf

[Malachi]

I got this th-42pz77u for $20. I took the back off and saw this on the psu.
I'm not sure what it is but the bets on it say TG128, 15A 250V. Is it a fuse?
It is soldered to the back of the transformer it is stuck to.
What is the reason for it.

I had another psu, so I used it and the tv was good.
Should I scrap this? I was afraid to power on the tv with this in it.

[vinceroger69]

Re: Panasonic P board etx2mm681mf

its a thermal fuse the one inside the transformer is probably blown hence been by passed like that there is a youtube video showing how to repair it properly
https://www.youtube.com/watch?v=qQ_iLxx3Fj4

[dick_barton]

Re: Panasonic P board etx2mm681mf

It's a 15A AXIAL TYPE THERMAL CUTOFF

http://www.enecomponents.com/product3.php?id=1166

[Malachi]

Re: Panasonic P board etx2mm681mf

Thanks guys. So it was probably ok?

[vinceroger69]

Re: Panasonic P board etx2mm681mf

Thanks guys. So it was probably ok?

did the power supply work? if so yes may of been ok but the repair could of been done a lot tidier etc.

[dick_barton]

Re: Panasonic P board etx2mm681mf

It seems a very high value amperage thermal fuse to find in a set.

[Malachi]

Re: Panasonic P board etx2mm681mf

I don't know if it worked. Seller said the tv had 7 blinks. I took the back off and found the sc connector discontented from this psu.
When I saw that thermal fuse, not knowing if it was safe, I swapped my other psu in, plugged the sc in and the tv was fine.

I'll just keep this to scavenge parts from. Starting to accumulate a lot of scrap boards. Lol

[dick_barton]

Re: Panasonic P board etx2mm681mf

Better safe than sorry. Spares always come in useful if you can remember what you have.

[vinceroger69]

Re: Panasonic P board etx2mm681mf

The one he fits in the video (6 mins in) is 150 degress half a amp but he does say the amps dosnt matter so not sure myself.

[dick_barton]

Re: Panasonic P board etx2mm681mf

I see where they are comming from. It's really only being used as a temperature circuit breaker. If the transformer heats up due to a short circuit winding or excessive load current then it open circuits.