Philips H8 - NO PICTURE Troubleshooting

NO PICTURE
IS OSD (ON
SCREEN DISPLAY)
PRESENT?
SELECT AUX 1 IN THE
MENU AND INSERT A
SIGNAL INTO THAT
INPUT.
IS A PICTURE
PRESENT ON THE
TV SCREEN?
YES
SELECT THE TUNER
INPUT AND SUB AN IF
SIGNAL ON PIN 68 OF
0226.
IS A PICTURE
PRESENT ON
SCREEN?
YES
IS APPROX 33
VOLTS PRESENT
ON PIN 9 OF THE
TUNER?
YES
CHECK 3409 AND 6481.
NO
IS 5 VOLTS DC
PRESENT ON PIN 6
OF THE TUNER?
YES
CHECK 5261 AND
RELATED
CONNECTIONS.
NO
IS CLOCK AND DATA
PRESENT ON PINS 4 AND
5 OF THE TUNER?
YES
REPLACE THE TUNER.
YES
CHECK CIRCUIT
BOARD
CONNECTIONS.
NO
IS A NEGATIVE GOING PULSE
PRESENT ON PINS 7, 8, AND 9 OF
7830? THIS PULSE SHOULD BE 100
VOLTS P-P OR GREATER.
NO
IS A 2 VOLT P-P OR GREATER
PULSE PRESENT ON PINS 1, 2,
AND 3 OF 7830?
NO
CHANGE THE SMALL
SIGNAL BOARD (SSB).
NO
CHECK 7830 AND
RELATED
COMPONENTS.
YES
IS A POSITIVE GOING
PULSE PRESENT ON
PIN 5 OF 7830?
YES
REPLACE THE SMALL
SIGNAL BOARD (SSB).
YES
IC 7830 OR THE CRT IS
THE PROBLEM.
NO
DOES THE SET HAVE A
PIP (PICTURE IN PICTURE)
PANEL?
NO
CHANGE THE SMALL
SIGNAL BOARD (SSB).
NO
IS THE YUV
SIGNAL PRESENT
ON 0205, PINS 1, 3,
AND 4?
YES
CHANGE THE SMALL
SIGNAL BOARD (SSB).
NO
IS THE YUV
SIGNAL PRESENT
ON 0205, PINS 6, 8,
AND 9?
YES
REPLACE THE SMALL
SIGNAL BOARD (SSB).
YES
IS THE SET AN
XXPT91 MODEL?
NO
CHECK 7803 ON THE
PIP/DOUBLE WINDOW
PANEL.
YES
CHECK 7919 ON THE
PIP MODULE.
NO
DOES THE SET
HAVE A SECOND
TUNER?
NO
REPLACE THE SMALL
SIGNAL PANEL (SSB).
NO
IS COMPOSITE
VIDEO PRESENT
ON 0272, PIN 3?
YES
REPLACE THE SMALL
SIGNAL BOARD (SSB).
NO
IS COMPOSITE
VIDEO PRESENT
ON 0272, PIN1?
YES
CHANGE THE SMALL
SIGNAL BOARD (SSB).
YES
IS THE SET AN
XXPT91 MODEL?
CHECK 7916 AND 7910
ON THE PIP MODULE.
NO
CHECK 7402 AND 7403
ON THE DOUBLE
WINDOW PANEL.
YES
NO
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