LE40R88BD Powers Off After About 30 Seconds

[Easky15]

Hi all, I have here a samsung le40r88bd, I got the tv and it was stuck on standby light so had a look inside and found 2 bulged caps so i replaced those then tested and the set fired up but after about 30 seconds it went back into standby, I then tested the rest of the caps and all are testing good on my meter, I then tried turning it on and disconnecting the buttons on the set incase they were faulty but still it powered off after about 30 seconds, All DC voltages from the board are as they should be and none seem to fluctuate before the fault happens. Would anyone know what might cause this?

Here's a few pics

https://lh6.googleusercontent.com/-F...217_021852.jpg


https://lh4.googleusercontent.com/-H...217_021911.jpg

[PowerAmpFreak]

Re: LE40R88BD Powers Off After About 30 Seconds

I had this issue once, and to solve it I had to turn off the watchdog in service menu.
You gotta be quick to navigate through the menus. It took a few tries before I finally managed to "kill" the dog before it shut down.

[Easky15]

Re: LE40R88BD Powers Off After About 30 Seconds

Thanks PowerAmpFreak, I just went down to try that but when i try to access service menu using button combo Mute, 1, 8, 2, Power but i can't access menu, The red indicator is flashing when i press the buttons so tv is seeing the remote signal, As soon as i press the number 1 tv starts to power on, Am i doing something wrong?

[Easky15]

Re: LE40R88BD Powers Off After About 30 Seconds

Tried a second samsung remote control there and same problem....

[Easky15]

Re: LE40R88BD Powers Off After About 30 Seconds

Ok so i was using wrong button combo, It was Info, Menu, Mute then Power,
It's in service settings now, Found D-Watchdog set to on so ill change it to off and see how that goes, Thanks for the reply.. ;-)

[Easky15]

Re: LE40R88BD Powers Off After About 30 Seconds

TV is now working fine, Thanks a lot.. ;-)