Panasonic 65fx700b intermittent tcon problem

[john@pchire.com]

Re: Panasonic 65fx700b intermittent tcon problem

Heres a picture on what it would do after the TV would warm up you then turned it off and on and then it would work this will fix this problem models also effected are 65fxw724

i've had the same problem i replaced the t-conn board that i know works from another TV but now i'm getting this picture can any help or point me in the direction where i'm going wrong

[Marugovegan]

Re: Panasonic 65fx700b intermittent tcon problem

Got a copy of the 65inch tcon epprom if any one needs it

Hi Michael,
May I please have it?
Also, after I changed the boards, now the tv lights up but the image looks like this. Is it normal before flashing the eeprom or did I mess it up while remving the caps?
Thank you for taking your time to post a solution.

[vinceroger69]

Re: Panasonic 65fx700b intermittent tcon problem

Surface mounted?

yes that what i thought, i just google translated evde post to make it easier too understand.
(i see hes edited his post now)

[nomoresonys]

Re: Panasonic 65fx700b intermittent tcon problem

Surface mounted?

[vinceroger69]

Re: Panasonic 65fx700b intermittent tcon problem

was ist eine SM Kappe?
kannst du ein Foto reinstellen wo man es sieht.
Danke

what is a SM cap? Can you post a photo where you can see it. thank you

[evde]

Re: Panasonic 65fx700b intermittent tcon problem

was ist eine SM Kappe?
kannst du ein Foto reinstellen wo man es sieht.
Danke

what is a SM cap?
Can you post a photo where you can see it.
thank you

[Ben198585]

Re: Panasonic 65fx700b intermittent tcon problem

It was actually a t-con from a TX-65FX600B

[Ben198585]

Re: Panasonic 65fx700b intermittent tcon problem

I fixed one of these t-cons on the same model.
There's a single S.M cap at the very top middle of t-con.
Replaced it and fixed.
I found out by applying 3 seconds of hot air on the t-con just before you turn on the tv, panel will come on and stay on. Until you turn it off, then reheat repeat.
Or just Replace cap mentioned
Also 55" tcon won't work, been there

[saularciga]

Re: Panasonic 65fx700b intermittent tcon problem

They are not capacitors, they are resistors.

[jarsenick1]

Re: Panasonic 65fx700b intermittent tcon problem

Hello,

I have the same problem with T-CON board for 65FX700.
I think I go to buy a TC-Con for 55 inch.

Michaelrobbo, why you removed 4 caps?

[Studi]

Re: Panasonic 65fx700b intermittent tcon problem

Got a copy of the 65inch tcon epprom if any one needs it

Hi Michael. Yes please.

Not sure about protocol but can you could attach here?

Stuart

[pavinski]

Re: Panasonic 65fx700b intermittent tcon problem

Caps to removes are c410 to c419 and c400 to c409

Hey my dude, I've bought this board as having the same issues and am going to be working on it over the weekend, I'm a bit of a novice but I'm okay with desoldering.

I have a quick question though, which chip is the EPPROM? Just so I don't start dicking around with the wrong thing.

Thanks mate, appreciate the help.

[GCM]

Re: Panasonic 65fx700b intermittent tcon problem

Got a copy of the 65inch tcon epprom if any one needs it

Hi,
I'm looking for the Panasonic Tcon board 6871l-5491a.
I would be glad if you could help me with one .

Regards

[Borics]

Re: Panasonic 65fx700b intermittent tcon problem

resolder U1, known problem with panasonic

[Michaelrobbo]

Re: Panasonic 65fx700b intermittent tcon problem

Got a copy of the 65inch tcon epprom if any one needs it

[Michaelrobbo]

Re: Panasonic 65fx700b intermittent tcon problem

Caps to removes are c410 to c419 and c400 to c409

[Michaelrobbo]

Re: Panasonic 65fx700b intermittent tcon problem

Can confirm the problem was with the dc-dc ic part number sw50212 but couldn't source one it would only work when heated so was failing not the solder so to fix I got a working board off a 55inch and did an epprom swap and removed some capacitors hope this helps people with the same problem

[Topcat]

Re: Panasonic 65fx700b intermittent tcon problem

You can both agree to disagree. Leave it at that !!!!!!!

I'm onboard with this theory....a tech disagreement is one thing, but when it sinks to personal level & name calling, its time to knock it off.

[SMDFlea]

Re: Panasonic 65fx700b intermittent tcon problem

If you had average reading comprehension dif, then you would have gathered that it was an eeprom problem that the OP solved.

You can both agree to disagree. Leave it at that !!!!!!!

[nomoresonys]

Re: Panasonic 65fx700b intermittent tcon problem

If you had average reading comprehension dif, then you would have gathered that it was an eeprom problem that the OP solved.