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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: 9
Amstrad
3128NF
Int pic break up
Line dr Tr replaced & increase feed res from 1 to 2k
14-09-04
Amstrad
CTV
3128NF
CTV3228NF
Field collapse
C578 470pF leaky (behind FOP chip)
14-09-04
Amstrad
CTV
3128NF
CTV3228NF
Field collapse with narrow display & no sound
The +8v supply pin 10 ICI101 missing but present on pin 36 - L300 10µH o/c
14-09-04
Fidelity
3128NF
Int blows mains fuse at sw on
change the degaussing thermistor to type 96209 as the original is designed for continental 220volt supplies
14-09-04
Fidelity
3128NF
Int pic break up
Line dr Tr replaced & increase feed res from 1 to 2k
14-09-04
Fidelity
3128NF
Repeatedly blows LOPTr
line driver tr Q580 (2SC1573), R608 1K R6102R2 & R609 from1K to 2K 5 watt.
14-09-04
Fidelity
CTV
3128NF
Dead
R609 (Change to 2k 5w), C620, Q580 & Q602
14-09-04
Fidelity
CTV
3128NF
Field collapse
Check R614 fusible - if OK check R340 3M3 for o/c connected to pin 43 IC101 vid proc chip (under screening can)
14-09-04
Fidelity
CTV
3128NF
Mains fuse blown for no apparent reason
Check positor is Philips type 96209 not black one
14-09-04
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