panasonic tc-p42x5

[lrr250r]

power flickerd today and now the set doesn't power.The red led isn't lighting and no relay clicking when i plug it in.I don't see any visual issues on the psu(B159-201). The set did this once before and after a few hours passed with power cord unplugged it worked again. I've read threw the forum and seen mention of the TCZAA6755U IC ref (U203) going bad. Anyone willing to walk a newbie threw some testing to attempt repair. Thanks in advance.

[tw2005]

Re: panasonic tc-p42x5

power flickerd today and now the set doesn't power.The red led isn't lighting and no relay clicking when i plug it in.I don't see any visual issues on the psu(B159-201). The set did this once before and after a few hours passed with power cord unplugged it worked again. I've read threw the forum and seen mention of the TCZAA6755U IC ref (U203) going bad. Anyone willing to walk a newbie threw some testing to attempt repair. Thanks in advance.

Why not just get the IC and give it a go. Sounds like the symptoms, nil power after outage. Can't talk from experience though,

[nomoresonys]

Re: panasonic tc-p42x5

check anything labeled F on your power supply board, F for fuse, with a digital multimeter, be careful working with powersupplys, HIGH VOLTAGE. a pic. with more detail would be good, my camera only has 5mp, I can't get a decent pic., must need 8 or more mp for good clear pics., I guess.

[nomoresonys]

Re: panasonic tc-p42x5

check fuses in diode mode, should read 000 or close to it, ol or no change of reading is probably bad fuse.

[lrr250r]

Re: panasonic tc-p42x5

I'll post better pics of the board in a bit. Charging camera.

@nomoresonys...i only seen the one big white fuse and it meters fine. I'll double check for another fuse.

@tw2005 trying to rule out any other issues. All of the links i've found for the replacement part are locatedin the uk. Any thoughts on where i can get my hands on it state side.

[nomoresonys]

Re: panasonic tc-p42x5

I'll post better pics of the board in a bit. Charging camera.

@nomoresonys...i only seen the one big white fuse and it meters fine. I'll double check for another fuse.

@tw2005 trying to rule out any other issues. All of the links i've found for the replacement part are locatedin the uk. Any thoughts on where i can get my hands on it state side.

check digikey maybe.

[lrr250r]

Re: panasonic tc-p42x5

i'll have a look......didnt see anything on mouser. Does anything have to be programmed to it ?

[nomoresonys]

Re: panasonic tc-p42x5

maybe grab a manual, tom66 has his manual link stuck on his posts, and see if all your voltages at the connectors on your power supply are correct, some might require using the ac setting and some should be dc setting, maybe someone here has worked with this same model.

[lrr250r]

Re: panasonic tc-p42x5

don't see part TCZAA6755U on digikey either. Can someone provide an alternative part number for that ic ?

[nomoresonys]

Re: panasonic tc-p42x5

i'll have a look......didnt see anything on mouser. Does anything have to be programmed to it ?

good question, I don't know much about ic's, better let the more experienced guys advise.

[tom66]

Re: panasonic tc-p42x5

No programming necessary. Try reading the part # off the IC directly with a magnifying scope. Should be fairly cheap from digikey/eBay...

[tw2005]

Re: panasonic tc-p42x5

Only thing I'm unsure is which version it is , U, UW?

[tom66]

Re: panasonic tc-p42x5

Shouldn't matter. Probably a lead free termination style, not important for someone hand soldering.

[tw2005]

Re: panasonic tc-p42x5

Pretty crook when a part is no longer available on a 2012 TV but dug this up. They have it listed with it's real number.

FAN6755UWM which would make it FAN6755UW , you should be able to get it from here.

http://panasonic.encompass.com/item/.../FAN6755UWM/Ic

[tom66]

Re: panasonic tc-p42x5

http://www.ebay.co.uk/itm/2Pcs-Green...item27d7a172f1 ...?

[lrr250r]

Re: panasonic tc-p42x5

tom66 i had my eye on these earlier today. Do you think they will work ?

http://www.ebay.com/itm/171364799349...%3AMEBIDX%3AIT

[lrr250r]

Re: panasonic tc-p42x5

getting a server error when i try to upload the better pics....will try again later

[lrr250r]

Re: panasonic tc-p42x5

Better pictures of board. Back of the psu has some discoloration. Looks to be from heat. Is that normal ?

[lrr250r]

Re: panasonic tc-p42x5

ic at location u203 replaced. Tv is now back from the dead. Thanks all

[tw2005]

Re: panasonic tc-p42x5

ic at location u203 replaced. Tv is now back from the dead. Thanks all

Cool, that was easy

Merry christmas to all