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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 209
NikkaiTLG99Blank raster without soundTDA4501 faulty - Pin 19 should be 4.7v. If 0v vid mute is on - check feed res and cap14-09-04
NikkaiTLG99DeadCheck R109 180R ?w o/c, Q117 2SC1573A o/c, rem st/by trfmr, R104 5R 1w hi res14-09-04

NikkaiTLG99Hard to start up from st/byC101 100µ 400v, Z1 CSB455E, IC3 Upd 1937C14-09-04
NikkaiTLG99Height reducedcheck if 12v supply is low, R104 3R3 1w hi res14-09-04
NikkaiTLG99Hor dark lines near centre of screenC116 0µ47 50v14-09-04
NikkaiTLG99No col, field foldover & pic shift - all intWire link between R218 & pin 27 of IC101 (loss of sandcastle pulse)14-09-04
NikkaiTLG99No signals/tuningTuner VT pin ov tuning volts; R1010 470k on front tuning panel hi res14-09-04
NikkaiTLG99No sigs or chan displayEM112 mains start up tfmr o/c pri14-09-04
NikkaiTLG99Sound weak & distR153 o/c14-09-04
NikkaiTLG99Weak , distorted sound.R153 was open-circuit there was no bias voltage at the base of Q103 , the lower transistor in the class A push-pull output sta14-09-04
NikkaiTLG99 TLG99Dead.R109 ( 180ohm , 0.5W ) o/c , Q117 ( 2SC1573A ) npn o/c , Standby Tx pri o/c , R10414-09-04
NikkaiTLG99 TLG99No frame.R104 ( 5ohm , 1W )14-09-04
NikkaiTLG99/141& TLG88/140TrippingCheck st/by trfmr for o/c pri14-09-04
PhilipsG9Frame collapse.Drys on left hand side of convergence panel.14-09-04
PhilipsG90bright raster - poor field lin163v line low at 90v - R3570 8R2 o/c14-09-04
PhilipsG90Continuous page header display in subtitleChange text IC to type MAB8461P/W196 part No4822 209 6247914-09-04
PhilipsG90CONTRAST CONTROL LIMITEDC2560 ( 33nf ) LEAKY PIN 7 , LOPT.14-09-04
PhilipsG90Dead chopper transistor s/c.Also change CNX83A optocoupler part No.4822 130 8203414-09-04
PhilipsG90Dead.Check for drys on chip diodes.14-09-04
PhilipsG90field collapseD6465 sm14-09-04
PhilipsG90Frame collapse.Wickman fuse to o/p transis o/c , R3503/07 , R3501 390k o/c.14-09-04
PhilipsG90Int loss of tuningX2402 eeprom chip14-09-04

PhilipsG90No blue.D6416 ( BAS32 ) leaky.14-09-04
PhilipsG90NO LINE OSCIF VOLTAGE ON PIN 16 TDA2579 IF NOT 9v CHECK ACROSS D6455 5v6 ZENER IF OK HERE REPLACE T7455 IF NOT REPLACE ZENER14-09-04
PhilipsG90no start up - trippingD6611, 6613, 6614 BAS3214-09-04
PhilipsG90off with s/by led flashinght low & pulsing - R3632 15k in prot cct u/s - C2630 & R3668 also possible14-09-04
PhilipsG90Picture too bigReplace T7652 & CNX83 opto14-09-04
PhilipsG90SET WORKS BUT NO TEXT AND F7 DISPLAYED ON SCREENNO RESET PULSE TO IC7800 CHECK TR7846 AND C2843 220uF14-09-04
PhilipsG90snowy piccheck pin 6 tuner. If absent check R3001 15R14-09-04
PhilipsG90TrippingR3668 sm 150R14-09-04
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