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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: 68
Amstrad
CTV
160
0
Field collapse
R709 22k o/c
14-09-04
Amstrad
CTV
160
0
Field collapse
Dry joint pin12 LA7800 timebase chip (12v supply)
14-09-04
Amstrad
CTV
160
0
Frame - no field scan.
R709 ( 22k ) in series with field hold control o/c.
14-09-04
Bush
2
160
NTX
Dead
UC3844 in psu, LOPTr MJF18204 s/c (used BUT12A in lieu)
14-09-04
Bush
2
160
NTX G1000
Bright raster with sound
No HT to RGBs - R315 10R pin 9 LOPTx o/c
14-09-04
Decca
160
Blank raster with flyback lines - sound Ok.
R410 ( 10R ) o/c.
14-09-04
Decca
160
Colour int.
IC TDA3565 decoder IC
14-09-04
Decca
160
Cone shaped raster.
LOPTX.
14-09-04
Decca
160
Dark band 1-2" across centre of screen.
C303 ( 220nf )
14-09-04
Decca
160
dead
HT at chopper tr coll L802 o/c
14-09-04
Decca
160
Dead
loptr s/c, R507/508 12k o/c
14-09-04
Decca
160
Dead - blow up due to excess HT
Loptr BU508 & TDA3651 Fop chip s/c - D808 in set ht leaky
14-09-04
Decca
160
Dead - fuse blown.
Posistor , 1.25amp.
14-09-04
Decca
160
Dead - fuse blown.
Chopper Tx ( R4051 ) s/c , D812 ( BY396 ) s/c , R802 ( 3.3R 4W ) o/c.
14-09-04
Decca
160
DEAD , PSUPP TICKING
R8050 OC. 100k
14-09-04
Decca
160
Dead H.T. ok but 11.5V to signal circuit missing
Check Q501 & R508 ( 10K )
14-09-04
Decca
160
Dead line TR s/c R411 burnt up Field ic may also
D808 in Set H.T. 117V o/c
14-09-04
Decca
160
DEAD WITH HT. BUT NO LINE DRIVE
Check drive at base Line out TR Chck for 12V Q503 & R508 ( 12K ) O/C.
14-09-04
Decca
160
Dead.
L802.
14-09-04
Decca
160
field collapse
TDA3651 field chip u/s
14-09-04
Decca
160
Field collapse
TDA3651 s/c (TDA3653 does);R411 10R o/c
14-09-04
Decca
160
Field collapse
R301 560k hi res
14-09-04
Decca
160
FIELD COLLAPSE
R301 560k ON PIN 1 TDA4503
14-09-04
Decca
160
field collapse
TDA3561 (TDA3563 works) u/s & R411 10R safety res
14-09-04
Decca
160
Frame cramp at bottom until set is warm.
IC TDA4503.
14-09-04
Decca
160
Int cutting out.
Drys on Q801.
14-09-04
Decca
160
int dead
dry joints Q801 emitter
14-09-04
Decca
160
Int signals
R007 3k9
14-09-04
Decca
160
Line Collapse
C406 0µ39(20"), 0µ33(16") 250v scan coupling cap
14-09-04
Decca
160
Loss of line lock when hot.
C113 ( 2 , 700pF )
14-09-04
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