HT-J4500 home cinema, cycling on and off repeatedly.

[scotchbaz]

Although I've had it a good few years, never having a problem with it, my home cinema system is throwing a fit. It seemed to start when the blu ray/ dvd drawer wouldn't fully extend. I gently pulled it and inserted the disc and it seemed to work okay. The next day, when I switched it on, it now cycles through "LOAD", "No DISC" repeatedly, even when trying to use "D in", "AUX" or any other setting. I've disconected the drive from the rest of the unit, no difference. I've reset the unit whilst it was in stand by mode, nothing. It's not dirty inside, all very clean looking. Anyone know what's going on... Please help.

I've looked over the net all to no avail. 

[Alek2]

Great

[Erdogan01]

Merhaba hocam. Hangi servisle irtibat kurdunuz telefonunu verebilirmisiniz?

[mmgabel]

My unit started doing this again 2 days ago (July 16th, 2021). Anyone else?

Had it fixed last year by a service center. 

[Animal66]

Yes, mine started doing the same at almost the same time. Middle oj July 2021. Samsung does not want to repair anymore.

[TomBab]

...

[TomBab]

My HT-J5500 started doing this last week and authorized service center hasn't answered my email about this problem. I doubt that they want to fix this for free. I attempted fix mentioned on page 103 in this thread where 2 points on the mainboard needed to be connected at precise moment but failed. I managed to stop reboot loop but as fix instructions told to unplug power cord and put it back after 5 seconds or more reboot loop always came back. When reboot loop was stopped at main menu I was able to move selection using remote but nothing worked. Pressing OK didn't do anything and I wasn't able to get to settings menu. I felt like I was so close fixing it but I don't know if my timing was off or if it's simply impossible to fix this using that trick. Has anyone else tried it? Nothing to lose I suppose.