Hi all.. new to this forum
I have an aging RAYTHEON ProtectIR 4000b mobile Thermal unit that is misbehaving. I realize the unit is 'ancient' by electronics standards, but aside from the issue I'm having, operates flawlessly. So I'm hoping to find someone with knowledge with this thermal unit. I'll settle for an electronics schematic, a pinout, anything related to this 4000b.
Everything else works, but it will not go Left/Right with the joystick. The unit powers up, provides a great thermal image, goes Up/Down, but will not go left to right.
I have checked continuity on all 25 pins of the control cable and there are no interruptions. I've also run 12vDC (&Ground) directly to the Autotrol motor inside the base of the unit. The motor works fine. I've also switched the 12v(+) with (-) leads, and the motor operates in the opposite direction. I've disassembled the joystick 'box' and checked for continuity on that particular controller, and all the switches work, and are continuous back to the main electronics control box. All 3 fuses were also checked and are fine.
So as the POSSIBLE ISSUE, I've ruled OUT the motor, the main control cable from the electronics box to the outside unit, and the joystick control. Before I go exploring inside the control box for anything obvious, like a blown cap or something, I was hoping for some guidance or insight. Incidentally, there are two pair of 'travel sensors' wired into the control loom, presumably telling the camera which way is Forward (for when the unit is switched ON) and when it's facing Rearward (stowed position, when power is switched off).
ANY assistance would be appreciated, even a direction on where to go to locate an old tech that may have the pertinent knowledge.
THANK YOU!