Jvc 42dg8bj goes to stanby after 15 mins

yes, you possibly have faulty inverter board,just replace it to fix the problem

Try unplugging tv for 24 hrs. Tvs have capacitors in them that remain charged for a period of time to help maintain settings during power loss. Also look for a system reset button.

Common short the cover cap over the video & sound boards short out if you remove it the cap only (shield metal) it usually will fix this

Hello Charliebigwh, hi technically your monitor's power supply has a problem, this is either your switching regulator does not work or there is a short in that section, If you want to do it your self, need to replace all large value, and or high voltage capacitors(especially the capacitors with its top is bubbly), need also to replace the switching IC, and power transistor.

Have it checked by a technician if you cannot do the work.

check for cold solder joints

how can i get rid of the closed caption on my magnavox tv without the original remote

i have taken the tv to repair shop a circut board has went on it

Plan on fixing or replacing the power board soon. It will keep getting worse until, the end. There is a small bright side. It is the best damage to sell your broken tv "as-is" online. Someone will come pick it for sure.

According to Sharp it is a software problem. Engineer came, installed software update ,10 minute job.....TV worked fine for 1/2 day unfortunately: Then images turned black and white in all channels TV turned itself off, and stanby and OPC buttons started flashing. When TV came back on its own 10 mins later , screen had 2 large square staines superimposed in image (as if it was a burnt screen)...Engineer will be back next week...all quite sad really for a new TV.....will keep u posted