video switching
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08-08-2005, 07:11
Post: #2
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video switching
Hi Bruce:
PMMI modified a Hitachi CT 911 model for the combo tv/back up monitor. The relay that does the switching is a small silver unit on the upper right side of the main board. Part of the gain circuit was modified as well. The relay that was used seldom "retires" so let's go another step at this point. Question, has the camera been changed at any time? Was there a video reversing mod done with 2 Bosh relays? This area will give you more grief than the one on the mother board. Another area is the plug on the back of the chassis and wiring. Or the coax connector on the back of the chassis. On the plug, check the red and brown wire and also the white ground to the chassis. If the reversing mod was done, check the wiring on those relays as well and more than likely one of those relays has failed. If you look in the files section, there should be a manual for the reversing mod that I wrote and it will give you some of the wiring to the chassis and also the relays. Safe travels, Ralph and Charolette Fullenwider Ralph's RV Solutions, Duncan, Oklahoma http://home.swbell.net/rlf47/index.htm At 02:48 AM 8/8/2005 +0000, you wrote: > Does anyone know how the video is switched between the TV and rear >view camera, I assume there is a relay or something like that, but you >know what they say about "assume". Also where is it located. Mine will >switch from TV to camera, but most of the time when I switch back I >have no TV signal. > > >Thanks >Bruce Campbell >Clearwater, FL >83'FCSB >"Blue Skies" > > > |
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video switching - fl_bluebird_1983 - 08-07-2005, 14:48
video switching - Ralph L. Fullenwider - 08-08-2005 07:11
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