TCON board compatibility question

[Themi]

Hi all just a quick question.

I have a TX65-AX802B Panasonic screen which has a faulty TCON board. The TCON board model number is V500DK1-CKS1. Can I use any other TCON with the same model number or are TCON boards matched specifically to the TV model number they are paired with?

Thanks

[Diah]

Re: TCON board compatibility question

you can use T-CON any from vestel TV brands with boards V500DK1-CKS1 but it should be for 65 screen as yours tv size

[Themi]

Re: TCON board compatibility question

you can use T-CON any from vestel TV brands with boards V500DK1-CKS1 but it should be for 65 screen as yours tv size

Thanks. If I buy a V500DK1-CKS1 from a 58 screen what will be different about it? The ribbon connectors or something else?

[Diah]

Re: TCON board compatibility question

Thanks. If I buy a V500DK1-CKS1 from a 58 screen what will be different about it? The ribbon connectors or something else?

different screen size are different T-CON firmware.. other things shape sockets etc identical.. search after your screen serial No , which i guess its V650dk1-ks2 rev. Ha

or post here your faults of the T-CON as here many members could help by test and repair.

[Themi]

Re: TCON board compatibility question

different screen size are different T-CON firmware.. other things shape sockets etc identical.. search after your screen serial No , which i guess its V650dk1-ks2 rev. Ha

or post here your faults of the T-CON as here many members could help by test and repair.

I see, that makes a lot of sense, I wasn't aware firmware changed.

This is the error I get, screen looks washed out, colours are very unsaturated, everything else appears to work fine.

https://ibb.co/J7dy54M

I have removed the TCON board and visually inspected it and see no obvious faults. I have checked each capacitor, 0ohm fuse, fuse, inductor and all seem to be ok (tests onboard with multimeter).
I have tried replugging in all the flexi cables but there is no change.

I have done some basic checks to see what voltage it is getting and around the DCIN for the TCON I vaguely remember getting:
1.2v
8.7v
12v
17v
(I can reconfirm these if you like)

Out of curiosity, if I were to be unable to repair this one and buy a new V500DK1-CKS1 which came from a different model of TV then desolder and transfer over the firmware chips from my current TCON board, would this work?

[budm]

Re: TCON board compatibility question

Did you check the Gamma Voltages?
How about providing good clear straight shots of the whole T-CON board.
What is the history of the TV?

[Themi]

Re: TCON board compatibility question

Did you check the Gamma Voltages?
How about providing good clear straight shots of the whole T-CON board.
What is the history of the TV?

I'm not sure what gamma voltages are or where to test them from. Can't seem to find anything relating to how to test them. Could you advise?

Here are images of the tcon
https://ibb.co/86hW74v
https://ibb.co/P57mz8j
https://ibb.co/RyRBzRz
https://ibb.co/7VjSBFY
https://ibb.co/5cD47D0

History is tv worked fine for a few years, nothing untoward, then powered on one day and screen looked like this.

https://ibb.co/J7dy54M

[Diah]

Re: TCON board compatibility question

from yours photo screen washed out early to judge T-CON fault before do some more test.
1- did the photo of the T-con are related to yours original parts or its for example you took from the web? because i can see some damage on it.
2- how about when you press menu .. did the menu UI come clear or its also washed ?
3- did you inter by chance the service menu and changed some things at swprofile.bin ?
4- did you tried to inter service menu and see the UI menu of the service option showing correctly or washed up ?
5- disconnect the last 2 ribbon cable from T-CON to panel ( the 2 on yours right hand when you stand behind the tv ) then turn on and see how it look the half screen. ( repeat point 5 on the other half side )

[Themi]

Re: TCON board compatibility question

from yours photo screen washed out early to judge T-CON fault before do some more test.
1- did the photo of the T-con are related to yours original parts or its for example you took from the web? because i can see some damage on it.
2- how about when you press menu .. did the menu UI come clear or its also washed ?
3- did you inter by chance the service menu and changed some things at swprofile.bin ?
4- did you tried to inter service menu and see the UI menu of the service option showing correctly or washed up ?
5- disconnect the last 2 ribbon cable from T-CON to panel ( the 2 on yours right hand when you stand behind the tv ) then turn on and see how it look the half screen.

1 - that is my actual tcon board. where can you see damage?
2. yes menu UI is also washed out
3. never entered service menu
4. I have tried methods from here https://factory-reset.com/wiki/Panasonic_Service_Menu to try to enter service menu but none seem to work. Are there any other common ways?
5. half the screen goes black, other half is washed out

[Diah]

Re: TCON board compatibility question

1 - that is my actual tcon board. where can you see damage?
2. yes menu UI is also washed out
3. never entered service menu
4. I have tried methods from here https://factory-reset.com/wiki/Panasonic_Service_Menu to try to enter service menu but none seem to work. Are there any other common ways?
5. half the screen goes black, other half is washed out

see attached your socket ( marked with red circle ) where there are burnt on the socket which i assume its related GAMMA feeds pins. you can trace and check under very good loops yours ribbon cable if there any burn or cut at the pins

method 1 should work

[Themi]

Re: TCON board compatibility question

see attached your socket ( marked with red circle ) where there are burnt on the socket which i assume its related GAMMA feeds pins. you can trace and check under very good loops yours ribbon cable if there any burn or cut at the pins

method 1 should work

I'm not sure if I see anything burned. I've attached some close ups for further inspection.

https://ibb.co/kghy3SP
https://ibb.co/tDDsRgz
https://ibb.co/cwVXk2Q

cable is the corresponding cable for this socket

[budm]

Re: TCON board compatibility question

BTW, that 'V500DK1-CKS1' is the blank PCB P/N, you need to match the PCBA P/N on the bar code sticker.

[Themi]

Re: TCON board compatibility question

BTW, that 'V500DK1-CKS1' is the blank PCB P/N, you need to match the PCBA P/N on the bar code sticker.

this is the only sticker on there?

https://ibb.co/fML8fYS

[Diah]

Re: TCON board compatibility question

5. half the screen goes black, other half is washed out

my point 5 did you try the other half to disconnect ?

about the socket and its ribbon cable.. to my poor eyes they are not normal.

about sticker... vestel share all 65 brands such Toshiba / JVC too with same screen type under same driver of this T-CON ( its tomato boards ) can be cooked at any same size dishes ..

[Themi]

Re: TCON board compatibility question

my point 5 did you try the other half to disconnect ?

about the socket and its ribbon cable.. to my poor eyes they are not normal.

about sticker... vestel share all 65 brands such Toshiba / JVC too with same screen type under same driver of this T-CON ( its tomato boards ) can be cooked at any same size dishes ..

I will try other half shortly when I am back home

Would it be possible to remove the 2x A25L040O-UF BIOS chips from my current tcon and replace onto a working tcon?

[Themi]

Re: TCON board compatibility question

my point 5 did you try the other half to disconnect ?

about the socket and its ribbon cable.. to my poor eyes they are not normal.

about sticker... vestel share all 65 brands such Toshiba / JVC too with same screen type under same driver of this T-CON ( its tomato boards ) can be cooked at any same size dishes ..

Ok I tested both 2x ribbon cables in each side of the TCON. Same behaviour both sides, washed out screen

[Diah]

Re: TCON board compatibility question

I will try other half shortly when I am back home

Would it be possible to remove the 2x A25L040O-UF BIOS chips from my current tcon and replace onto a working tcon?

theory yes will work.. but what if the script on one of them was the cause ( who knows lol ) !!!

ist hard to find one for 65 ???

good to try and let us know but dump them first and replace each at same place ( don't switch them ) as the content different.

[Themi]

Re: TCON board compatibility question

theory yes will work.. but what if the script on one of them was the cause ( who knows lol ) !!!

ist hard to find one for 65 ???

good to try and let us know but dump them first and replace each at same place ( don't switch them ) as the content different.

That’s true. In that case I am screwed lol.

Not too difficult to find one but cost is 5x that of same board for a different screen.

I have a chip reader so I’ll try to remember to create a dump for each ic before refitting and yes, I certainly won’t switch them. Hopefully new board will be here in a few days. Worth a shot at £7

[Diah]

Re: TCON board compatibility question

That's true.
I have a chip reader so I'll try to remember to create a dump for each ic

just to remind the best way of dumping the SPI out of circuit and its under cool condition below 5 decree .. do the same for both 65 & 58 SPI as record.. and in case there are some things going wrong... you still can erase SPI and check blank..then write the dump..then identify the written script

[Themi]

Re: TCON board compatibility question

just to remind the best way of dumping the SPI out of circuit and its under cool condition below 5 decree .. do the same for both 65 & 58 SPI as record.. and in case there are some things going wrong... you still can erase SPI and check blank..then write the dump..then identify the written script

thanks, good advice. I'll post up when the new board get's here.

I wonder, is there anything I can inspect, check on the current board or does my issue appear to be from the large BGA ICs ?