My Loewe 40 inch tv always switch to standby mode when i on it and restarts as well please will i get any solution

Are the lines always vertical or horizontal? Are they black or multiple colors?

Sounds like the remote sensor inside the TV is faulty. Check and replace it. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

you've to enter its service mode to do this. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

Common problem with this model is the line output transformer.

your power supply is defective try to check the regulator.

It is most likely some bad capacitors on the power supply board that are causing it to go into "safety mode" and shuts it down.

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

I found an original replacement remote for a Loewe ARC332PB at remotes.com

yes but you have to open the tv

its a power supply problem.