Philips 3a repair tips free download

File name 3a_repair_tips.pdf

Funkcijske No function, after being switched onFault 1: The last position has been stored after switch off. Faults that can occur: The appliance has been switched off with the remote control and afterwards the mains plug has been pulled out of the socket. Now the TV can only be switched on with the remote control (or it goes to standby). the appliance goes to stand-by. No function, the power supply gurgles and whistles. Fault 1 The audio module has a short, therefore the power supply is intermittent. No function. Fault 1: Capacitor 2609 (8200pF/1500V) is defective. Fault 2: Power supply goes to protection mode. Check if power supply or loading is defective. Replace loading with a 220V (100W) lamp. If power supply ok then change C2609. Fault 3: Check if service no. starts with AG01. Appliance is set to protective mode. Check fuse T1638. Fault 4: Check if 300V present. If no 140V then check R3681 (6K8). Fault 5: + 140V is not present. Replace TS7687 (BUT12A; 4822 130 43919). Also replace TS7674 (BC337; 4822 130 40855), TS7685 (BC547; 4822 130 44257), TS7686 (BC369; 5322 130 44593). Standby LED and Crispening LED both flash. Fault 6: Capacitor 2612 (360nF/250V) S/C. Fault 7: Line BU is defective. Fault 8: Check circuits 7200 and 7210 (TDA1514) if R3200 and R3201 on audio module are warm. Note: With the old 3A chassis line time base does not start if sound module has been removed. With some models video switches off if sound module has been removed. Fault 9 : Replace IC (TDA1514) on audio module. Occasionally does not start up. Fault 1 Replace diodes 6616, 6677 and 6672. When the appliance is set to stand-by after playing for about 3 hours, it switches on and off continuously and the red and green LED's also. Fault 1 Check T7731, T7743 and T7742. The appliance automatically switches to EXT2. Fault 1: C2835 (4.7nF) is defective. The capacitor is positioned on the front operation board in the TV. The appliance is in safety mode. Fault 1: C2610 (180nf) has a short circuit, amplifier TDA1514. At start up the appliance goes into safety mode. Fault 1: D2609 has a short circuit (8.2nf) and D6609 is leaky. No sound. No picture. Blocked commands. May be intermittent. Fault 1: Check the power supply of the IC and F1642. The TV works intermittently. Fault 1: Resolder connector P05 on the display board/control board (module 1008). Poor locking in audio search. Fault 1: Remove module 1012. Change IC7038. Spontaneous operation (after a few weeks) in the wrong option mode (white picture, no teletext, no VHS). Fault 1: Replace zener diodes 6933 and 6934 on the SSP module. Appliance sometimes does not start, often only starts the second time around. Everything is fine from stand- by. Fault 1: Check resistors R3658 and 3659. After operating normally for a short time the TV goes from "Reception" to "Search". Fault 1: Check the IF module. Starts up after minimum 30 secs of the CRT lighting up. Fault 1: Check C2638 (10mf) that filters the 200V coming from t