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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: 242
Amstrad
3021
Bright pic with fb lines
R111 220k on crt base
14-09-04
Amstrad
3021N
Dead
Q1 BUZ90A s/c, F01 2A o/c, R1 270k 1w o/c, R5 680k also replaced
14-09-04
Amstrad
3121N 11AK12
St/by only - psu o/ps present except 12 & 8v
IC301 (CTV352/V1.4) and IC302 (ST24C02AB1).
14-09-04
Amstrad
3128N
Dead
C599 2,200pf s/c, Q101 BUZ90AF s/c, R101 5R6 5w o/c
14-09-04
Amstrad
3128N
Hor black lines thro' pic
C454 10µ 25v o/c
14-09-04
Amstrad
3128NF
Int pic break up
Line dr Tr replaced & increase feed res from 1 to 2k
14-09-04
Amstrad
CT3028
No signals or tuning volts
R124 15k o/c
14-09-04
Amstrad
CTV1000
Blank white raster , sound control o/c
Q7601 ( 25C1675 ) , C7901 ( 240pf ) S/C tune/f
14-09-04
Amstrad
CTV1000
Line collapse
Dry joints line lin coil L7702
14-09-04
Amstrad
CTV1000
Line hold drifts int.
Dry on line hold control
14-09-04
Amstrad
CTV1000
Raster - blank - sound Ok.
Q7601 ( 2SC1675 ) C7901 ( 240PF ) S/C
14-09-04
Amstrad
CTV12
Weak/no sound
R151 39k near lh edge of pcb o/c
14-09-04
Amstrad
CTV1400
Buzzing - intermittent.
Adjustable capacitor on sound IF subpanel.
14-09-04
Amstrad
CTV1400
Col flickers/fback lines
F o/p tr Q702 coll only 32v (62v) - C739 100µ o/c
14-09-04
Amstrad
CTV1400
Dead
Fusible R529 0R68 1w Pt no 242741
14-09-04
Amstrad
CTV1400
Dead - int
Crack in print between pin 6 LOPTX and R749
14-09-04
Amstrad
CTV1400
Dead - int dead.
Drys around STK.
14-09-04
Amstrad
CTV1400
Dead - int.
Line transistor Q705 collector connection o/c.
14-09-04
Amstrad
CTV1400
dead except for slight buzz
HT ok but not reaching lop tr - break in print between lopt pin 11 & lop tr
14-09-04
Amstrad
CTV1400
Dead lop tr s/c
Dry joints line dr tfmr T701
14-09-04
Amstrad
CTV1400
Dead with whine from psu
dry joints line dr tfmr
14-09-04
Amstrad
CTV1400
Flyback lines & colour flickering
C739 ( 100u f ) o/c
14-09-04
Amstrad
CTV1400
Flyback/Txt lines at top of screen
C739 100µ 50v hi esr
14-09-04
Amstrad
CTV1400
int dead
dry joints lop tr (look ok by sight)
14-09-04
Amstrad
CTV1400
Int Dead
IC502 STR451 gets hot - T501 chopper tfmr faulty
14-09-04
Amstrad
CTV1400
Int line sync on chan change
D715 & D704 faulty
14-09-04
Amstrad
CTV1400
Int pic - once a week touch
Int A1 due to LOPTx faulty
14-09-04
Amstrad
CTV1400
Int sound level & buzz
Adj cap on sound if sub panel
14-09-04
Amstrad
CTV1400
Loses Line Sync during Channel Change
D715 & D704
14-09-04
Amstrad
CTV1400
No line sync during channel change.
Replace zeners D715 & D704.
14-09-04
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