Welcome, Guest. Please login or register.

Author Topic: Im trying to connect my CDTV to a modern LCD tv with SCART cable...  (Read 3317 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline pyrreTopic starter

However. i get a white only image.
i connected the scart to a 1084 which shows the dctv cd player screen just fine.
but my led tv wont...
it is a 5th gen samsung led smart lcd tv. no 3d option.

and i cant seem to find the settings for scart options in the menus....

anyone got a clue how to fix it?
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder
 

Offline Speelgoedmannetje

  • Hero Member
  • *****
  • Join Date: Oct 2002
  • Posts: 9656
    • Show only replies by Speelgoedmannetje
Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #1 on: June 28, 2014, 09:06:46 AM »
Not sure, the only thing I can think of is that the sync of scart comes from the "composite" signal, and the 1084 takes the "composite sync" signal. But using the composite sync signal with scart would only result in distorted picture, not a white picture. I do know that the cdtv has a bit of a strange video output. Somehow I managed to power my cd32 with it when attached to a splitter.
And the canary said: \'chirp\'
 

Offline vince_6

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #2 on: June 28, 2014, 09:15:05 AM »
Is it an old scart? If yes then you can burn your tv's scart circuit with that. New tech isn't tolerant enough to old machines output.
You need a modified scart cable with resistors. You can make one from a schematic or buy from ebay.
My BBS : flashbackbbs.sytes.net:6502
http://partsfromthepast.blogspot.gr/ A1200 Black Project
 

Offline pyrreTopic starter

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #3 on: June 28, 2014, 12:40:50 PM »
Quote from: vince_6;767755
Is it an old scart? If yes then you can burn your tv's scart circuit with that. New tech isn't tolerant enough to old machines output.
You need a modified scart cable with resistors. You can make one from a schematic or buy from ebay.
Where can i find the scematics?
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder
 

Offline vince_6

My BBS : flashbackbbs.sytes.net:6502
http://partsfromthepast.blogspot.gr/ A1200 Black Project
 

Offline pyrreTopic starter

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #5 on: June 30, 2014, 10:54:34 AM »
Quote from: vince_6;767776
Here you are :

http://flashback-computing.com/viewtopic.php?f=20&t=783
I hope that was a joke.... i cant understand that language.....
"
Για να μπορέσετε να δείτε τις δημοσιεύσεις σε αυτή την Δ. Συζήτηση πρέπει να είστε εγγεγραμμένο μέλος και να έχετε συνδεθεί."



is it Greek?


English would be nice...
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder
 

Offline orange

  • Hero Member
  • *****
  • Join Date: Dec 2003
  • Posts: 2797
    • Show only replies by orange
Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #6 on: June 30, 2014, 11:05:51 AM »
I'm almost 100% sure you don't have enough voltage on blanking pin 16.
Better sorry than worry.
 

Offline pyrreTopic starter

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #7 on: June 30, 2014, 11:25:24 AM »
Quote from: orange;767955
I'm almost 100% sure you don't have enough voltage on blanking pin 16.
How can i fix it?
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder
 

Offline mcbone

  • Newbie
  • *
  • Join Date: Jun 2014
  • Posts: 33
    • Show only replies by mcbone
Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #8 on: June 30, 2014, 12:07:43 PM »
Quote from: pyrre;767732
However. i get a white only image.
i connected the scart to a 1084 which shows the dctv cd player screen just fine.
but my led tv wont...
it is a 5th gen samsung led smart lcd tv. no 3d option.

and i cant seem to find the settings for scart options in the menus....

anyone got a clue how to fix it?


as your SCART cable... get at other end red and yellow and white plugs not plug you put in to walls i hae run cdtv and amiga 600 a1200 scart
maybe i am dyslexia

An Apple a day keep bill gates away
 

Offline vince_6

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #9 on: June 30, 2014, 12:55:47 PM »
Yes it is in Greek, it says to register, I though you could see the schem without.

You have PM.
« Last Edit: June 30, 2014, 12:58:21 PM by vince_6 »
My BBS : flashbackbbs.sytes.net:6502
http://partsfromthepast.blogspot.gr/ A1200 Black Project
 

Offline orange

  • Hero Member
  • *****
  • Join Date: Dec 2003
  • Posts: 2797
    • Show only replies by orange
Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #10 on: June 30, 2014, 01:49:42 PM »
Quote from: pyrre;767956
How can i fix it?


you need to provide above 1  and below 3 Volts on pin 16, on TV SCART socket.
usually, people use simple voltage divider, with resistors. Amiga video socket has both +5 and +12 Volts, so you can choose, but be careful.
I'd first check the cable if it already has something on pin 16.
 

its used to automatically switch TV to RGB (component) instead of CVBS (composite).
older TVs didn't need it, as you could select RGB with remote.
perhaps you're lucky, and can select it with remote too, check TV manual.

here is a nice explanation of blanking signal:
http://www.worldofspectrum.org/forums/showpost.php?p=717712&postcount=8

oh, there is a possibility that your TV simply doesn't have RGB SCART, only CVBS.
if so you're SOL.
« Last Edit: June 30, 2014, 01:55:18 PM by orange »
Better sorry than worry.
 

Offline pyrreTopic starter

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #11 on: June 30, 2014, 02:45:43 PM »
Quote from: orange;767964
you need to provide above 1  and below 3 Volts on pin 16, on TV SCART socket.
usually, people use simple voltage divider, with resistors. Amiga video socket has both +5 and +12 Volts, so you can choose, but be careful.
I'd first check the cable if it already has something on pin 16.
 

its used to automatically switch TV to RGB (component) instead of CVBS (composite).
older TVs didn't need it, as you could select RGB with remote.
perhaps you're lucky, and can select it with remote too, check TV manual.

here is a nice explanation of blanking signal:
http://www.worldofspectrum.org/forums/showpost.php?p=717712&postcount=8

oh, there is a possibility that your TV simply doesn't have RGB SCART, only CVBS.
if so you're SOL.
Ther are no settings for that in the setup menus. at least i cannot find it.
The tv has a separate component input. and do not know if the scart have component abilities...
but i will look into the scart cable.

is there a 24 pin amiga video to component option?
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder
 

Offline pyrreTopic starter

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #12 on: June 30, 2014, 02:58:54 PM »
Quote from: vince_6;767961
Yes it is in Greek, it says to register, I though you could see the schem without.

You have PM.
looking inside the connector, there are no connections to pin 8 or 16 in the scart end.
inside the db24 connector there are no connectivity to pin 22, not even a hole for the connector pin.

in other words, i need a new scart cable...
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder
 

Offline orange

  • Hero Member
  • *****
  • Join Date: Dec 2003
  • Posts: 2797
    • Show only replies by orange
Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #13 on: June 30, 2014, 03:16:52 PM »
Quote from: pyrre;767966
looking inside the connector, there are no connections to pin 8 or 16 in the scart end.
inside the db24 connector there are no connectivity to pin 22, not even a hole for the connector pin.

in other words, i need a new scart cable...


well you could modify that one, provided it has enough wires. or perhaps borrow one from audio if tv is not stereo. also sometimes it has multiple GND wires.

by component, you mean YPbPr? Amiga has only RGB component out, you'd need 'complex' adapter to connect it to YPbPr.
Better sorry than worry.
 

Offline pyrreTopic starter

Re: Im trying to connect my CDTV to a modern LCD tv with SCART cable...
« Reply #14 on: June 30, 2014, 04:47:42 PM »
Quote from: orange;767968
well you could modify that one, provided it has enough wires.
each lead has its separate ground wire. But the amiga video connector does not have trough hole for connector pins. the back plate is completely solid, apart from the pins already casted in the plastic.

Quote from: orange;767968
or perhaps borrow one from audio if tv is not stereo. also sometimes it has multiple GND wires.
stereo audio, out of the question.

But in total i can free 3 wires from other grounding signals...
but i would need a new 23 pin connector for amiga video port...

Quote from: orange;767968
by component, you mean YPbPr? Amiga has only RGB component out, you'd need 'complex' adapter to connect it to YPbPr.
yes. it has YPbPr component inputs.
what kind of adapter is needed?
Amiga 1200 Tower Os 3.9
BPPC 603e+ 040-25/200, 256MBram, BVIsionPPC, Indivision AGA MK2.
Amiga 2000 (rev 4.0) Os 1.2/1.3
2088 bridgeboard, 2MB ram card, 2091 SCSI.
Amiga 500+ Os 2.1
Derringer 030, 32MBram, Buddha in sidecar, Indivision ECS.
Amiga CD32
Video decoder