daveaustintx

I am your goto person on that for sure I have a plethora of parts for these systems. First thing is to identify the generation and model. A picture would be awesome to identify your setup. You can pm me for an email to send to or if you can post it here that will fly. Unless you have sick hot or wet weather I might assume you have an older generation one system. These have three security screws around the flat perimeter dome ring. I have plently of bubbles and modules parts and pieces. Your model number is on the inner module. On generation 3 G3 systems the dome ring pulls straight down you can insert a coin or paint scraper to pry the 3 studs down there should be a six inch long wire rope attached inside the housing to the dome ring. The studs are just like on a toaster oven door with very simple spring clips that pinch the 3 studs. If your system was down with a cracked bubble nasty little wasps can enter the housing.

I am used to working with bosh cameras with various heaters and fans. Your average ptz will produce some btus of heat what can be a problem is a sudden change drop in temperature causing condensation inside the dome bubble. This can to some degree be dealt with by placing dessicant bags in the camera housing as used in bosch g3 cameras on dome trim ring. The G3 camera has two heatsinks with fins and the convection heat causes circulation throughout the bubble, the outer shield keeps the heat down somewhat as well as a white finish. The G3 system is far from airtight however there is an optional NEMA gasket for the top of the dome. The perimeter of the bubble does not seal up well. On g4 camera systems a computer style processor fan. a heater, a theromostat and two plastic ducts are used to blow warm air inside the dome bubble to defog it. Bosch's ultimate solution is to use nitrogen to pressurize the dome to about 10psi through a valve stem like on a bike tire, this is an expensive option for sure. One can retrofit some cameras crudely but effectively using various resistive strip heaters and thermostats sometimes scavenged from old pelco prison style camera housings that are used on pan tilt motors.

Well where to begin I am licensed journeyman electrician and certified electronic technician, I have experience mainly with DSC security and Bosch/Philips/Burle PTZ Biphase CCTV systems and Allegiant controllers and associated equipment. I own several tens of camera modules and am seeking 7490/20C backboxes and 7440/7441 enviromental housings in trade for various G1-G3 modules. I am seeking a usb biphase config tool 8521 vim allegiant slot cards, 8800 vom cards, and a dongle for ltc8059/00 master control software. I have a bit of experience configuring this equipment and some service experience. I would love some internal non published vg4 mcam module servicing info.