PHILIPS - 32PF 5320/28 (Service Mode, Error Codes & Fault Finding] Cont:- Philips 32PF 5320 Service Mode, Error Codes & Fault Finding [Cont:] NO PICTURE, BLANK SCREEN WITH CORRECT SOUND OUTPUT. Check whether the user menu is visible. If the user menu is OK, activate teletext mode. If teletext is OK, the problem is in the ADC [B18]&[Columbus 3D combfilter [B19], if present [depending on model]. If the user menu is not visible, check the LCD panel back light is ON. If the back light is OFF, the problem is in the power supply board or LCD panel. Also check pin 12 (Lamp_ON_OFF) of 1J02. It should be high, during normal operation. Fault finding purposes, it is important know the following:- In Pixels Plus and Digital Crystal Clear models, which have an ADC [Analogue to Digital Converter] (B18), and Columbus 3D comb filter (B19), the digital input of the scaler is used for digital video path (Hercules output), whereas the analogue RGB output , a...
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