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There are 2 parts on your decoder.
The channel selector and the descrambler.
You get what you paid for, so the selector knows what is opened or closed.
If you select a closed channel, it will probably blink and say No No pal.
The easyest thing is to buy the cheapest cable selector you can find, those that only gets a channel and put it out on channel 3 or 4. Then you connect the output of this dumy to your selector. Place your selector on channel 3 or 4 and enjoy. I think it must be sufficiently stupid not to notice. And channel 3 or 4 must be a valid (open) one, so it will descramble it nicely to you.
But you must use a very dumb selector. Using your vcr will notdo, because it tries to reconstruct the missing h/v signals.
You may also reprogram the eeprom inside your receiver, or just cut the line that blanks the descrambler.
There are lots of solutions...
If you are going to build a board yourself, I would suggest the pic based approach. I first tried the color-burst pll sync regenerator circuit from Graf's TAB series book and then an early 3*chip pic based solution h**p://members.rotfl.com/dturner/. I do remember having to play with the agc cap in my vcr's tuner which was kind of a pain, but I would guess that this been solved by now. After having fun with it, I found it worthwhile to just buy a cheap ca*ble dec*oder box (many of which have the pic solution). The box is nice because it has a tuner and video/audio and channel 3/4 outputs. Good Luck
Well...just started the PAL PIC project as well here in Finland since more and more people here in our company get Cable-TV at home (o;
Hope to get a sample VCXO this week from jauch.de which was said to work perfectly (o;
With a normal XTAL circuit you get really good picture for TCM/Cartoon and Cinema1000. The others have a wavy picture and some brighter parts in the middle of the picture. Those channels don't give a picture at all when fed by a VCR.
Think the PIC soft needs some Scandinavian updates (o;