tsanox

Hi all, have a continuing issue with my Swann home security cameras hoping someone may have some insight or dealt with in the past. In the years having our Swann 6camera kit installed, we've had a number of blackouts, or the house power being turned off at the mains, powerboards being unplugged/accidently switched off etc. The cameras and the DVR unit lose power in these instances also. The problem is that SEVERAL times now, and SEVERAL cameras, have extremely grainy image quality (attached photo showing the grainy image that exists after the poweroff/power on) after the system is powered back up again after the power outage. Each time it has happened it's happened to 1 camera at a time. I've had to replace the cameras each time. They stay permanently grainy image, on SOME rare occasions, they would revert to proper image quality on their own until the next power-cycle when they will revert and then stay that way permanently no matter how many times the system is power cycled. The question is.. How can the power to the unit/cameras suddenly being turned off, ruin the image quality the cameras can produce? If it was a power surge I could understand, but we're just talking about the power being turned off. also - the dvr and cameras are always plugged into a power surge protected powerboard. any advice would be helpful thanks.

haha, What is the general consensus on Swann cameras? Any other recommended affordable(comparably) products to use instead? Chucking them in the garage, have done no other testing other than trying them in other ports on the DVR, giving them a smack and a shake etc. Was interested in hearing if there was some other tests one can perform to identify the problem. Ie. open it up and check circuitry or something