I have the same scope - Konus KONUSPRO-EL30 4-16x44 LCD Rifle Scope w/10 Interchangeable Reticles

And I have the same problem with mine it does not turn on unless cranked tight then back it off until it turns on junk is what I’m saying but the image is crystal clear and it held tight groups it came on my cva accura lr-x .45 cal muzzleloader I am looking into the Arken APL-4 4x16x44 combo so far 99 percent of reviews I’m looking at are all happy customers again that’s an affordable product for what you get for sure