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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
Make
Model
Problem
Solution
Date
Found: 1771
Ferguson
TX90
Height excessive - no line sync.
D137 ( 68v ) zener leaky.
14-09-04
Ferguson
TX90
Height variations - frame bounce.
D137 ( 68v ) zener leaky.
14-09-04
Ferguson
TX90
Hum bar - no sweep tuning.
D908 s/c , R969 o/c , TR916 , TR917 s/c , R966 o/c.
14-09-04
Ferguson
TX90
Hum bar on picture - HT low.
L120 s/c , TR107 ( BD839 ) o/c.
14-09-04
Ferguson
TX90
Int dead
Mains tfmr int o/c pri winding
14-09-04
Ferguson
TX90
Int fuse blowing.
Mod uprate fuse from 1A to 1.6A
14-09-04
Ferguson
TX90
Int loss of sound & picture.
LOPTX
14-09-04
Ferguson
TX90
Int sync
C124 2n7; C129 68nf
14-09-04
Ferguson
TX90
Int tuner drift, hum on pic, field roll
int continuity of track near hole by 12v reg
14-09-04
Ferguson
TX90
Intermittent sound mute & no channel change.
C908n ( 10nf ) leaky.
14-09-04
Ferguson
TX90
Intermittent up/down operation - sound muted.
C908 ( 10nf ) leaky.
14-09-04
Ferguson
TX90
Lack of height
Hi res resistors in chain to tr104 base - replaced all 4 with a 22k
14-09-04
Ferguson
TX90
Lack of height
R203 behind heatsink 33R o/c
14-09-04
Ferguson
TX90
Lack of height may be intermittent.
R187 ( 6.2k ) goes high in cct when warm.
14-09-04
Ferguson
TX90
Lack of height.
D106 leaky.
14-09-04
Ferguson
TX90
Line collapse - Int.
Cracked print around T103.
14-09-04
Ferguson
TX90
Line collapse intermitt - line transistor o/c
Check for cracked print around T103.
14-09-04
Ferguson
TX90
Line collapse line transistor blown.
C211 base TR113 to +12v if 220nf fit 22nf.
14-09-04
Ferguson
TX90
Line collapse line transistor blown.
Check D113 if 1N4007GP change to OGF72 from ferguson.
14-09-04
Ferguson
TX90
Line foldover in centre; ringing & goes off tune
Tr113 line driver tr
14-09-04
Ferguson
TX90
Line jitter at low signal levels.
C194 change to 4n7f with parallel 680pf.
14-09-04
Ferguson
TX90
Line modulated at mains frequency.
Check for cracked print on earthy end of scan coils.
14-09-04
Ferguson
TX90
LOOKS LIKE FIELD FAULT BUT IS ON TEXT BOARD
27Mhz CRYSTAL
14-09-04
Ferguson
TX90
LOPT TX & TR s/c
Replace D109 ( BYD33 ) & TR107 ( BD839 )
14-09-04
Ferguson
TX90
Loss of CRT heaters.
LOPTX
14-09-04
Ferguson
TX90
Loss of EHT or focus supply.
LOPTX
14-09-04
Ferguson
TX90
Loss of focus or EHT.
LOPTX
14-09-04
Ferguson
TX90
Loss of picture or loss of bright/contrast.
R231 o/c.
14-09-04
Ferguson
TX90
Loss of sync - intermittent.
C129 ( 68nf ) int o/c , C124 ( 2n7 ) leaky when warm.
14-09-04
Ferguson
TX90
Loud whine & picture frilled 120v rail 115v.
TR108 ( BC338C ) o/c , R267 ( 12k ) gone high.
14-09-04
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Last SM download : Philips CDR760 SM 4635679849
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