mr_fixer
10-12-2007, 06:06 PM
I was cleaning out my storage building and found 1 of my old video projectors. It is a 1981 Bell and Howell Avicom, these were used for inflight movies on aircraft from 1978 till 1980's.
I started to clean it up and get it working again. I got raster but I can't get the onboard crosshatch generator to come up for alignment and testing.
I have pictures in the Horizontal Hold section of the members gallery Ah i think i got it figured out! Logan
fujifrontier
10-12-2007, 10:07 PM
i think that would be delightful to see
mr_fixer
10-12-2007, 10:43 PM
Ah! i got it figured out!
zenith2134
10-12-2007, 11:40 PM
Found on of these on the curb, a Sony, last year, but it was smashed up badly. Didn't take it. Yours looks nice, enjoy!
fujifrontier
10-13-2007, 08:02 PM
Sweeeet :D
Wish I was smart enuff to work on one of them :)
site123a
10-13-2007, 11:41 PM
Those are better then LCD projecters.
I just read recently how these "airplane movie" type CRT projectors are capable of great picture quality.
fujifrontier
10-14-2007, 01:52 PM
Would it be possible to get the guts out of an old RPTV and make it project on a wall?
'Cos, to me, that's what that thing looks like.
mr_fixer
10-14-2007, 03:07 PM
It is possible but you would need the service manual or a way to identify the deflection yoke and convergence leads so you could get the left/right, up/down properly oriented. The only tricky thing might be the focus as i think the lenses might be a fixed focus.
CPU , this one was OK, but the latter ones from the 90's are convertible to HDTV and are getting very collectible,
fujifrontier
10-14-2007, 05:48 PM
Do you know if a Toshiba 50A50M RPTV is? I couldn't find very much information on it...
Bill R
10-14-2007, 07:07 PM
I have a Provision crt projector in my storage building. It is made by Zenith. Currently it is set up for rear projection and to fill a 10.5 by 14 foot screen from 13.5 feet. You do have to have a service manual to get the yoke connections right.
Bill R
mr_fixer
10-14-2007, 08:48 PM
Bill and Fuji, i don't have any manuals for big screen TV's. i was lucky that the guy i bought this from had the original schematics. You might ask some of the other TV techs, if they can get you a copy.
fujifrontier
10-14-2007, 09:17 PM
Couldn't I just use a computer or something to reverse the video? :D
mr_fixer
10-14-2007, 11:00 PM
Couldn't I just use a computer or something to reverse the video? :D
I have no idea about how you could do that. I know almost nothing about computers. If you could find a schematic you would just have to reverse 8 wires per crt.
Bill R
10-15-2007, 06:57 PM
I have the manual for mine. It is a professional projector. I think there is a board in it that has the terminals for the yoke connections.
Bill R