Thanks
Peter
--
!!!!!!!!!!!Go Build a Robot!!!!!!!!!!!
! http://members.home.net/wireb/ !
!!!!!!!!!!!Go Build a Robot!!!!!!!!!!!
Peter Shabino Graduated Electrical Engineering
wi...@home.com Michigan Technological University
2015 41st ST. NW apt. F13 Now at
Rochester, MN 55901 IBM card test division
It needs to be cleaned with rubbing alcohol and the applicator of your
choice. "They" say not to use Q-tips, but I usually use Q-tips. "They" say
not to use yer finger, but in a pinch, I've used my finger.
I forget the name of the special little sticks you're supposed to use, but
Radio Shack has them.
wire wrote in message <38F7D6CC...@home.com>...
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Peter
>I am working on my aunts vcr and it just started to play color
>tapes in black and white. I assumed it was just dirty and needed
>cleaning. Took it apart and for the most part it is very clean.
>cleaned up what little dirt there was and reassembled it. Still
>plays tapes in black and white. What are some common things
>that would cause this?
>
>Thanks
>Peter
>--
> !!!!!!!!!!!Go Build a Robot!!!!!!!!!!!
> ! http://members.home.net/wireb/ !
> !!!!!!!!!!!Go Build a Robot!!!!!!!!!!!
>
>Peter Shabino Graduated Electrical Engineering
>wi...@home.com Michigan Technological University
>2015 41st ST. NW apt. F13 Now at
>Rochester, MN 55901 IBM card test division
Somebody sneaked in and reversed the heads? :-))
Seriously, there may be a problem with the crystal or a related
component. Have you recorded and played the tape back on another
machine to see if the recording is in colour? I know little about
VCR's, but those are some ideas that come to mind. You should post
back with the model and make, and it may tweak someone's memory. You
may need a schematic and oscilloscope to sort out a problem like this.
Tom
Tom MacIntyre wrote:
>
> On Sat, 15 Apr 2000 02:28:58 GMT, wire <wi...@home.com> wrote:
>
> >I am working on my aunts vcr and it just started to play color
> >tapes in black and white. I assumed it was just dirty and needed
> >cleaning. Took it apart and for the most part it is very clean.
> >cleaned up what little dirt there was and reassembled it. Still
> >plays tapes in black and white. What are some common things
> >that would cause this?
>
> Somebody sneaked in and reversed the heads? :-))
>
> Seriously, there may be a problem with the crystal or a related
> component. Have you recorded and played the tape back on another
> machine to see if the recording is in colour? I know little about
> VCR's, but those are some ideas that come to mind. You should post
> back with the model and make, and it may tweak someone's memory. You
> may need a schematic and oscilloscope to sort out a problem like this.
>
> Tom
Magnavox
MODEL CCR095AT04
This is a combo TV VCR unit
The tv works fine off the tuner (in color).
I have my scopemeter charged up waiting for some hints at repair.
I will stop by target on my way to work and pick up a blank tape
and try recording on this vcr and playing on a second one.....
Thanks
Peter
>Recorded a tape in the vcr. It played back on that vcr in
>black and white. It also played back in black and white on
>another vcr (known good). Any ideas?
>
>Thanks
>Peter
It's losing color before the head. If you have colour on any channel
you select with the VCR's tuner, this narrows things down a fair
amount. You'll still probably need a schematic for this.
Tom
Don
In article <38F7D6CC...@home.com>, wi...@home.com says...
>
>I am working on my aunts vcr and it just started to play color
>tapes in black and white. I assumed it was just dirty and needed
>cleaning. Took it apart and for the most part it is very clean.
>cleaned up what little dirt there was and reassembled it. Still
>plays tapes in black and white. What are some common things
>that would cause this?
>
It records only in black and white. It just started doing it a couple days
ago - at first, it'd vary back and forth - color then b/w, then back again.
Now its just b/w.
It plays back in color if the tape came from somewhere else. Its tapes play
in b/w on another vcr. So the problem is only in the recording, not in the
playback.
I read y'all's FAQ and cleaned the heads and everything else (no Q-tips!
actually folded up some paper towel into a square - no lint, and soft).
Didn't fix it.
I found some stuff referring to the ps caps as a possible color problem.
Took off the cover and there's what looks like burn marks above the ps but
can't see much on the circuit board.
On your FAQ it says that a cap should go to infinity when subjected to an
ohmmeter. I tried 2 330uF caps, on one nothing happened (tried rev.
polarity), and the other it went up fast at first then slowly approached to
about 84 on the 200K ohm scale.
If anybody could advise as to whether I'm on the right track, if I should
try my hand at some soldering or whatever, I'd appreciate it.
Andrew