Dicas Reparação PHILIPS





Pesquisa: PHILIPS

Resultados 13482

MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
PhilipsG110Width at max or int (after LOPTx replacement)R3525 10k width pot o/c
PhilipsG110White area visible on right side of screen in EXT1 mode of BL sets.Remove the resistors 3462 and 3464. Add a potentiometer of 47K (4822 100 11371) on the position of R3461.
PhilipsG110When Chopper or LOP Trs goes s/cCheck C2546 8n2 2kv
PhilipsG110Very low contrast.Check DC voltage on pin 7 of IC7350. If this voltage does not rise above 1.7 volts suspect a fault in the BCL line. Check/replace T7351 - BC848B (5322 130 41982). Check/replace T7413 on the picture tube PCB (BC856B; 4822 130 60373).
PhilipsG110Vertical shift incorrect, after replacing a 28" BL-CRT.Mount in parallel of R3512 a resistor of 2K2 (4822 116 52256) or 2K7 (4822 116 52263).
PhilipsG110Vertical bars on channel 2 and 4.For sets equiped with a .4 picture tube panel, on channel 2 and 4 there are vertical bars (spook) visible at the left side of the picture. To solve this problem remove on the picture tube panel capacitors 2417, 2418, 2419 and replace jumper 9302 by a cap
PhilipsG110txt waves about at topC2829 47µ on txt pcb
PhilipsG110Txt unlocked - appears over pic intdry joints txt pcb - sm cap in this instance
PhilipsG110Tuning unstableVoltage on pin 11 U 1000 (Tuner) fixed Replace U 1000 (UV 816; 4822 210 10365)
PhilipsG110Transistor 7625 (BUT18AF) lasts longerAdd two diodes BYD73B (4822 130 60778) between base and emitter of 7625 (anodes towards base). Check the 7654 is BC817 and not BC847.
PhilipsG110To disable control cct if set tripss/c pins 1 & 2 of opto coupler & run set on reduced mains (about 90v ac) to check psu; cause of tripping was D6657 LI-C20 diode in sound prot line leaky
PhilipsG110Ticking soundOn some receivers it may be possible to hear a ticking noise in the background when the receiver is in external AV mode. In cases of specific complaint, the phenomena can be reduced by modifying the NICAM panel as follows: 1. Remove chip resistors R3044
PhilipsG110Text does't functionReplace U 1003 (4822 212 23371) non TOP Replace U 1003 (4822 212 23519) TOP
PhilipsG110sync fault - loses line lockTr7364 BC858 o/c due to s/c o/p print to screening can on txt pcb
PhilipsG110StriationsUnder certain picture conditions, vertical striations may be seen at the left side of the picture on some receivers only. Sets mostly affected are those fitted with a .4 version of the CRT base panel. The symptoms can be greatly reduced or cured complet



Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

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