[TechAssist] Mitsubsihi VS45605 Vertical Distortion : VZ7 Chassis

  • From: "Shoreline Electronics" <jstielau@xxxxxxxx>
  • To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 28 Oct 2003 15:57:24 -0500

Make : Mitsubishi
Model : VS45605    VZ7 Chassis
Problem : Intermittently vertical deflection develops distorted horizontal
lines throughout pic.....looks like picture is trying to collapse/squash
with what we have called "line paring" occurring.

Not really heat sensitive or vibration sensitive....just seems to happen !

Scoping the vertical output we can see distortion on the ramp part of the
wave when it occurs.  60hz pulse input looks clean. B+ to the IC is OK

While I wait for the LA7845 IC to arrive...as we suspect its bad , was
curious if others have had this problem on this chassis?

=================================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
(860)399-1861
(860)664-3535 FAX
jstielau@xxxxxxxx
=================================

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