Questions - Universe/68, HP-9134A,VT420 composite video - test-drb@ccmp.vtda.org

17 Apr 2005

--- Patrick Finnegan <pat at computer-refuge.org> wrote:

...
  First off, before you go around modifying VT420s,
 you may want to test 
 the Pro first.  
Yes, the Pro is a complete unknown quantity at the
moment. My suspicions about someone messing with the
power supply were confirmed when, after removing the
already-unscrewed top cover I found a nice green
jumper cable across what was left of the fuseholder. 

I think I will take my time on this one. Perhaps I
should make sure I have a fire extinguisher handy as
well.

...
  The 'composite' output of the
 machine nicely matches 
 NTSC (RS-170) composite signal specs, so you can
 hook the output 
 directly to a TV with a composite input.  Beware 
If I can ever get the thing to power up I have an old
portable TV upstairs I could use - no composite input
but I do have an RF modulator I bought years ago.
Perhaps that will work. And the VT420 I had in mind
needs to be repaired anyway since it screeches at me
when I turn it on, so perhaps that's not the best
approach. Thanks for the advice.

Regards,

Dave

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