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- Subject: DEFEATING MACROVISION
- Reply-To: marc.klopert@factory.com (Marc Klopert)
- Date: Sun Apr 24 18:35:00 1994
-
- The person who said that you can readjust a trimmer in your VCR to
- defeat MacroVision is CORRECT.
- The precedure is as follows..
- 1.get a service manual, or ask a repair shop to look up your model.
- 2.find the video AGC trimmer.
- 3.hook your machines together, video in to video out, audio in to audio
- out.
- 4.put the encoded tape in the machine that you are using to play the
- tape(the one with the plugs in the output jacks)
- 5.hook up your tv to the OTHER machine
- 6.while playing the encoded tape, watch it on the tv..you should see the
- picture changing brightness.
- 7.open up the machine that you would be recording ON(the one that the tv
- is on now).
- 8.using the info derived from steps 4 & 5, find the video AGC trimmer.
- 9.using a non-metal tool(try Radio Shack),adjust this trimmer until the
- brightness variations stop.
- 10.put the cover back on the VCR.
- The reason this works...
- The way MacroVision screws up your copies, is a variation of video
- levels(not the whole signal, but a part of it).
- This throws the recording machine into a tizzy because the
- AGC(automatic Gain Control)circut can't keep up with the varying levels.
- When you readjust the trimmer, you are lessening the effect of that
- circut.
- The result is that the signal goes right by with no problem.
- In most cases, doing this will have no negitive effect on non encoded
- inputs..this is because most signals are aprox. 1 volt peak-to-peak
- anyway, so the video AGC is not really needed anyway.
- If you have some source that overdrives your machine, then play with the
- trimmer..you should be able to find a point that makes everyone happy.
- If you don't want to open up your machine, then spend 30 to 50 $, and
- buy a Macro eliminator box.
- These work fine(Damarc often has a good rice on these)
- If you buy a unit, make sure that it is DIGITAL.
- There may still be a few analog units out there.
- You can tell the difference very easily.
- The DIGITAL units have NO CONTROLS on them(except prehaps for a power
- switch)
- The analog ones have 2 controls, 1 which says stablize,video lock, or
- some other such term)the other control or switch will say in/out.
- You do NOT want this type!
- They do not work as well, and strip many other things out of the video
- signal then are needed to defeat MacroVision(closed captions for
- example).
- L8R all.......M.K.........
-