Re: Tempest twisting images...

Tempest twisting images...John
I had some strange image problems with bad Deflection transistor sockets, check they are good.
Cheers
Simon
  ----- Original Message -----
  From: John Robertson
  To: vectorlist@vectorlist.org
  Sent: Monday, June 12, 2006 8:39 PM
  Subject: VECTOR: Tempest twisting images...

  Ok, I'm lazy enough, but has anyone seen a situation with a Tempest monitor where the picture twists (+ Y axis) upon the display of the TEMPEST name for a second? Rather interesting distortion, I originally thought it was Q606 (2N3716) that was having life issues, but no, replacing it didn't change this distortion, then I tried the driver - MPUSU57 - again not the problem.

  Understand that I've re-capped the HV (stable voltages) and installed the LV2000 kit - stable +/- B voltages. Grounds are excellent, tried jumper wires to double check. Game seems happy otherwise, no smoke...connectors all inspected and solder built up on the monitor driver board pins as usual.

  There is also a twisting wave that appears in the picture on various levels - only during play, not in the attract mode - curiouser and curiouser.

  I thought it had to do with the speakers as it seemed to be most prominent when the sounds were very active (lots of shots, explosions), so I unplugged the speakers - no change.

  Yeah, pictures will be nice, but I'm off the warehouse right now to deal with other issues. Perhaps I can get them tomorrow and post them somewhere.

  Archives have nothing under twist or distortion that I can find relating to this...closest I found was "Tempest Boardset Barreling" by Dave Langley back a few years.

  John :-#(#

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