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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
TX9
Hi HT 135v instead of 115v
C147 470µ fallen in value
14-09-04
Ferguson
TX9
HT - 115v rail high & will not reduce.
C147 ( 470uf ) in 18v supply done down in value.
14-09-04
Ferguson
TX9
HTs high from chopper Tx.
R170 ( 15k ) high.
14-09-04
Ferguson
TX9
Hum from set.
Mains transformer - remount on grommets.
14-09-04
Ferguson
TX9
Incorrect line frequency.
IC TDA9503 TB generator IC54.
14-09-04
Ferguson
TX9
Int colour.
RV67 delay line balance control o/c.
14-09-04
Ferguson
TX9
Int goes to st/by, int vol/txt
Dry joints mains tfmr st/by panel
14-09-04
Ferguson
TX9
Lack of height
R287 1R2 hi res
14-09-04
Ferguson
TX9
LACK OF HEIGHT-WIDTH
CHECK R186 ( 12K )
14-09-04
Ferguson
TX9
Line collapse - fade off
TR68 ( T9051V ) Line transistor.
14-09-04
Ferguson
TX9
Line collapse - intermittent.
TR68 ( T9051V ) line transistor.
14-09-04
Ferguson
TX9
Line drift.
Locks on AV butt , D916 ( F425 ) on remote PCB.
14-09-04
Ferguson
TX9
Line drift.
D916 ( F425 ) leaky.
14-09-04
Ferguson
TX9
Line freq way off
line hold pot 1k
14-09-04
Ferguson
TX9
Line lock lost at sw on & chan change from no sigs
Connecting 12v to pin 9 plug 5 cures (take supply from Plug 5/5) Also check D117 on remote pcb of Txt sets or D916 on U725 module on r/c only sets. Causes low volts at pin 9 of IC54 line gen chip
14-09-04
Ferguson
TX9
Line output transister blowing at switch on.
L o/c print on L65 pin 1.
14-09-04
Ferguson
TX9
Line pairing top & bottom.
C212 ( 100nf ) o/c.
14-09-04
Ferguson
TX9
Lines black across screen.
C212 ( 100nf ) o/c.
14-09-04
Ferguson
TX9
No chroma.
C56 o/c ( voltage on pin 2 of IC52 slightl low )
14-09-04
Ferguson
TX9
No col
TDA3560 chip faulty
14-09-04
Ferguson
TX9
NO COLOUR
CHECK RV67 PRESET ( 470R )
14-09-04
Ferguson
TX9
No colour & low brightness
TDA3560 chip faulty
14-09-04
Ferguson
TX9
No colour after 1/2 hour.
Control RV67 high or o/c track in chroma delay line cct.
14-09-04
Ferguson
TX9
No colour.
Delay line velel control ( 470R ) .
14-09-04
Ferguson
TX9
No field sync - rolling pic
low sync pulses to pin 8 of fop chip - R275 8k2 hi res -next to PL14 scan coils plug
14-09-04
Ferguson
TX9
No focus.
Focus spark gap may have gone S/C.
14-09-04
Ferguson
TX9
No pic - no A1 volts
R232 1k o/c
14-09-04
Ferguson
TX9
No pic - sound ok
R232 1k o/c
14-09-04
Ferguson
TX9
No picture - blanked out on teletext.
R260 high.
14-09-04
Ferguson
TX9
No picture - sound Ok.
No 115v rail drys on L104.
14-09-04
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Last SM download : DYNACORD PM2600
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