Panasonic LCD TV turns off after few seconds! HELP

[budm]

Re: Panasonic LCD TV turns off after few seconds! HELP

i resolved problem, PLS remove BD9897fs protectio mode. i put on 17pin diode on ground ant TV work good.
http://english.electronica-pt.com/lcd-repair?p=bd9897fs
https://cdn.badcaps-static.com/pdfs/...a70699e3c8.pdf

That is not a fixed, that is bypassing the safety shutdown circuit.

[mikicabresje]

Re: Panasonic LCD TV turns off after few seconds! HELP

i resolved problem, PLS remove BD9897fs protectio mode. i put on 17pin diode on ground ant TV work good.
http://english.electronica-pt.com/lcd-repair?p=bd9897fs
https://cdn.badcaps-static.com/pdfs/...a70699e3c8.pdf

[CapLeaker]

Re: Panasonic LCD TV turns off after few seconds! HELP

That panel is toasted!

[audiofreak19]

Re: Panasonic LCD TV turns off after few seconds! HELP

That's a tab bond from the lcd display. Not repairable.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

The picture issue is not the main board. However if the backlight board is disconnected the TV should stay on and you should see something while shining a flashlight into the screen. You can also try to disconnect the backlight and the tcon board and see if it stays powered up.

Hy, it was the backlight problem, plastic behind backlight line was broken, so spark was jumping from + to ground on backplate.
But now i have even bigger problem :SSS
I pulled some part out of upper layer of display :S

Can i do something to fix it? here are the pictures




Please help, i feel like shit right now :S

Thank you

[CapLeaker]

Re: Panasonic LCD TV turns off after few seconds! HELP

The picture issue is not the main board. However if the backlight board is disconnected the TV should stay on and you should see something while shining a flashlight into the screen. You can also try to disconnect the backlight and the tcon board and see if it stays powered up.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

I have a feeling since you swapped the CCFL connectors (No.1) around and the dark area remained in the same postion then it may be defective CCFL tubes which are part of the panel assembly.

Hy, in repairshop they said that its the bad main board, i have a filling that its not. So my question is, if i completly disconnect ccfl inverter and tv still doesnt stay turned on, it can be bad ccfl anyway? thanks!

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

Hy, so i got call from repairshop today and the problem is that the motherboard is dead. Just to let you know. Repair would cost 170EUR (mobo + work)! I will try to find new mobo myself Bye

[tw2005]

Re: Panasonic LCD TV turns off after few seconds! HELP

Hy, im done my mom is taking tv to service. thank you for all your help

I have a feeling since you swapped the CCFL connectors (No.1) around and the dark area remained in the same postion then it may be defective CCFL tubes which are part of the panel assembly.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

You also need to jumper the backlight on to the 5v standby to force it on

Hy, im done my mom is taking tv to service. thank you for all your help

[CapLeaker]

Re: Panasonic LCD TV turns off after few seconds! HELP

You also need to jumper the backlight on to the 5v standby to force it on

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

No worries, first i powered tv on and test resistance between these two connections, I found that resistance is 0. Than i tried to connect those two without motherboard!

Ok i figured it out. There is another connection TV_SUB_ON_RELAY_ON in order to turn psu on i connected TV_SUB_ON_RELAY_ON with RELAY_5V6 and STBY_5V6,
Now i can hear relay click when i plug corn in, but nothing shows up :S



Here you can see (left red circle) that there are some ..._ON connections for backlight board, do i need to connect those to something as well? Right circle is that TV_SUB_ON_RELAY_ON that i found.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

maybe wait for some better guidance, you dont want to short anything out.

No worries, first i powered tv on and test resistance between these two connections, I found that resistance is 0. Than i tried to connect those two without motherboard!

[nomoresonys]

Re: Panasonic LCD TV turns off after few seconds! HELP

:S I tried to connect relay to stby but nothing happends :S

maybe wait for some better guidance, you dont want to short anything out.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

I dont see ps-on, I cant figure it out ether.

:S I tried to connect relay to stby but nothing happends :S

[nomoresonys]

Re: Panasonic LCD TV turns off after few seconds! HELP

[ATTACH]102345[/ATTACH]

This is wiring diagram, i marked the connector with green circle. I dont get it, i must connect STBY_5V6 to what? thank you!

I dont see ps-on, I cant figure it out ether.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

https://www.badcaps.net/forum/showthread.php?t=17997 heres a good post, #5 describes the jumper a little, it is from stby to ps-on.

Mine does not have ps-on connection, so i must connect stby to something else, maybe relay?

[nomoresonys]

Re: Panasonic LCD TV turns off after few seconds! HELP

https://www.badcaps.net/forum/showthread.php?t=17997 heres a good post, #5 describes the jumper a little, it is from stby to ps-on.

[kajaalyo]

Re: Panasonic LCD TV turns off after few seconds! HELP

I think you jumper stby to bl-on, someone correct me if I'm wrong, not exactly sure.

This is wiring diagram, i marked the connector with green circle. I dont get it, i must connect STBY_5V6 to what? thank you!

[nomoresonys]

Re: Panasonic LCD TV turns off after few seconds! HELP

I think you jumper stby to bl-on, someone correct me if I'm wrong, not exactly sure.