Beko V30 Service Bulletin page 20

No picture
Raster OK
Check video out signal at pin 38 of IC101
YES
Only white raster visible on screen
NO
There are flyback lines on the screen
NO
There are black drops on the screen.
NO
No picture. There is a Red, Green or Blue raster
on the screen.
PICTURE AND COLOUR DEFECTS
NO
YES
YES
YES
NO
Check the tuner pin voltages. Check the
voltage 3.6-4.6 V at pin 18, 19 of IC101.
Check and replace F101, IC101.
Check CVBS signal with an oscilloscope. The
video signal goes through R103, T104, R154,
F104, T105, C150 to pin 40 of IC101
Check Hor. Flyback signal at pin 31 of IC101.
Check and replace C129 which is connected
to pin 11 of IC101.
Check and replace C139
Check and replace R167, R206, R118, R136,
R137, R135, IC101.