Beko V30 Service Bulletin page 18

No operation
Stand-by Voltages OK
Check 4.2 VDC at pin 6 of IC101
YES
Switch on the TV set. Check voltage 0.05 V pin
6 of IC101 and 0.28 V at R439
YES
Check and replace IC101
Stand-by Voltages are
abnormal
Check the standby voltage (it should be
14.7V). This voltage is 20V-50V.
NO
Standby voltage is around 160 V instead of
POWER SUPPLY DEFECTS (II)
POWER SUPPLY DEFECTS (III)
14.7V
NO
Check connection to R409 and R641
NO
Check the voltage 3.3 V
at pins 59, 66 of IC101 and pin 8 of IC402
YES
Check and replace R617, R641, R626, T603,
ZD603, T604, T605, T607, C621, C623
YES
Check the voltage 4 VDC at the cathode of
D615. Check and replace T605 and PH601