Maker Pro
Maker Pro

JVC VCR HRS5000 -- stuck in SVHS

  • Thread starter Rudolf Ladyzhenskii
  • Start date
R

Rudolf Ladyzhenskii

Jan 1, 1970
0
Hi, all

Unit would ecord in either SVHS or VHS, but will only try to playback in
SVHS. I can use any tape and it will always think that recording is done in
SVHS. As a result, VHS tapes are played with no color.

There is a module (IC301) that does the detection. I can see all signals
come to it (although chroma is less in amplitude than it is specified in
service manual) and module always thinks that incoming signal is a SVHS one.

I did not have much to do with SVHS. How is it recorded? Does it put chroma
in a different frequency than VHS chroma?

Thanks,
Rudolf
 
A

Andy Cuffe

Jan 1, 1970
0
Rudolf said:
Hi, all

Unit would ecord in either SVHS or VHS, but will only try to playback in
SVHS. I can use any tape and it will always think that recording is done in
SVHS. As a result, VHS tapes are played with no color.

There is a module (IC301) that does the detection. I can see all signals
come to it (although chroma is less in amplitude than it is specified in
service manual) and module always thinks that incoming signal is a SVHS one.

I did not have much to do with SVHS. How is it recorded? Does it put chroma
in a different frequency than VHS chroma?

Thanks,
Rudolf


VHS and SVHS record the chroma the same way, so it will have to use the
luma signal to detect the difference.
 

Similar threads

W
Replies
10
Views
3K
William Sommerwerck
W
T
Replies
9
Views
2K
G
Top