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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: 112
NikkaiTLG1433 TLG1433No sound or raster. HT high at 160v ( normal 112v )8.2v zener in PSU leaky , R417 ( 2k ) & R302 ( 6k8 ) o/c14-09-04
NikkaiTLG1433 TLG1433No sound.R650 ( 22k ) high.14-09-04

NikkaiTLG14RField bounceR137 10k 2w dry joint14-09-04
NikkaiTLG2000Black hor line drifts down pic on AVQ220 JC501P s/c on small rear pcb (BC546 used in lieu)14-09-04
NikkaiTLG2195Tuning range limitedZD101 33v zener faulty14-09-04
NikkaiTLG2501E-W distR154 o/c, L103 defective, also check TDA8145 EW cotrol chip & RV105 100k pot14-09-04
NikkaiTLG88No col/lines/jumping - worse on bright picC109 47µ 16v14-09-04
NikkaiTLG88/89Blank raster - like in AV mode - may be intL105 in video o/p was int14-09-04
NikkaiTLG88/89No pic or eht - sound okLow line drive to Q111 LOPTr base; line dr trfmr EM115 pri winding hi res (should be 50R)14-09-04
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
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