Philips SERVICE TIPS ANUBIS A free download

File name SERVICE TIPS ANUBIS A.PDF

PICTURE Picture distortion on teletext (right side, bottom of picture). Fault 1: Different contrast and brightness with teletext than with normal picture. Fit a 1N4148 diode on the TXT interface panel in series with R3786, cathode to R3786, anode to 6170. Fit a 100K resistor between PIN20 IC7700 (SAA5246) on the TXT panel and PIN17 of IC7280 (TDA3504) on the monocarrier. Picture and sound are ok. Flyback raster at the top of the screen. Fault 1: Check sandcastle on pin 6 of TDA3504. Erasing of raster is done on the inside of the TDA3504. After a power supply fault, the TV searches but there is no picture. No varicap voltage. Fault 1: In the power supply first of all check: the +13V on 2443 (220