Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0240

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                                    TV Products                                                      CSV-1
                                   Service Bulletin
                                    Sony Service Company - Technical Services
                                    A Division of Sony Electronics Inc.
                                    Sony Drive, Park Ridge, New Jersey 07656


Model:      KV-20M10/20S10/20S11                                            No.    240
            KV-20TS32/20V50

Subject: Unstable Picture, No Picture, Poor Focus, or                       Date: February 1, 1995
            Brightness Change


Symptom:
  (37)          Due to G2 leakage on the CRT, part number 8-738-768-05, the picture may become
                unstable. The picture might disappear, have poor focus, or brightness levels may
                vary.



Solution:       The following steps are recommended to alleviate the problem.

                1.    Mark both G2 (Screen) and G3 (Focus) pot's initial position.

                2.    Set G2 (Screen) fully Counter Clockwise.

                3.    Set G3 (Focus) fully Clockwise, so that the voltage potential between G2 and
                      G3 is the greatest. You might see some light arcing in the gun.

                4.    Reset G2 and G3 to their initial position.


       Perform the G2 (Screen) and G3 (Focus) adjustments according to the
       instructions in the Service Adjustment section of the Service Manual.


                      Models                   Applicable Serial Numbers

                      KV-20TS32                8,100,001- And Beyond

                      KV-20V50                  8,100,001- And Beyond

                      KV-20M10                  From the Beginning

                      KV-20S10                  From the Beginning

                      KV-20S11                  From the Beginning




Reference: FPRP                                                                                  PRINTED IN USA
Autoflagged - NO
                                                PRINTED ON RECYCLED PAPER

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