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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: 849
Akai
CT2107MS (On
w
a)
Int off with blob in centre of screen
Check for hairline cracks around chopper tfmr pins
14-09-04
Akai
CT2159 On
w
a
Field faulty - int lines at top etc
C417 220mfd 16v, C423 2200mfd 25v, C435 470mfd 16v
14-09-04
Akai
CT2159UT On
w
a
No start up
C910 & C912 47µ
14-09-04
Akita
C
W
1492
Int start up
R802/803 15k hi res
14-09-04
Alba
CTV4855 (On
w
a)
Low sound
C202 220µ decoupling cap AND R421 0R68 in line stage hi res (1R5)
14-09-04
Alba
CTV4855 On
w
a
No sound/pic - blank raster
5v line low at 3.6v - Q619 o/c
14-09-04
Alba
CTV840 On
w
a
Black vert bars with background pic
C420 22µ 160v o/c
14-09-04
Alba
CTV840 On
w
a
No tuning although the set displayed tuning drive
R125 ( 47R ) was opencircuit because C127 ( 470uF 16V ) was short circuit .These components form a filter in the 9.25V supply
14-09-04
Alba
CTV841 On
w
a
St/by only - relay chatters when sw held in
D401
14-09-04
Alba
CTV841 On
w
a
No pic - appears bright when A1 advanced
R430 180k in beam lim o/c
14-09-04
Alba
On
w
a CTV701
No sound/pic just pattern on screen
Video reaching Txt pcb but not leaving it. 5v supply missing - check HT smoothing cap 100µ 160v
14-09-04
Amstrad
CTV1400 (ne
w
)
Cogged pic
C517 33µ 160v between chopper & lop tfmrs
14-09-04
Amstrad
CTV1400 ne
w
Sound low & dist
C751 470µ 35v in o/p to spkr
14-09-04
Amstrad
CTV1410 On
w
a
Dead with HT low at 50v (112v)
No st/by relay, R632 33k pin 36 IC603 o/c
14-09-04
Amstrad
CTV1410 On
w
a
Sw itself back on when in st/by - int
Flexing panel brought fault on - R920 & R302 were physically touching bypassing relay
14-09-04
Amstrad
CTV1410On
w
a
Field cramp atbottom
R408 18k o/c
14-09-04
Amstrad
W
STV3032
Dead - BU2525 LOPTr s/c
When replaced ran hot with smoke from D01 - EW driver chip STV2145 faulty
14-09-04
Amstrad
W
STV3032N
Accessing service mode
Enter code 089
14-09-04
Amstrad
W
STV3032N
Removing child lock
press in this order P+ P- V+ V- with the round central button on the hand set, then press o.k. this has to be done in a quick shot within 4 secs, then the lock will be cleared .
14-09-04
Amstrad
W
STV7328NF 11AK19
Narrow with E-W bowing
R629 10R o/c - check for dry joints on caps
14-09-04
Bush
1407 (On
w
a)
bad audio distortion which at first sounded like a faulty spkr.
Despite replacing this, the audio o/p ic IC201 KA2201 (TBA820M) and variouscaps around it the fault remained. adding a 0.1mfd cap from the o/p of the ic (pin 5) to chassis, this completely cured the fault
14-09-04
Bush
1452 On
w
a
Blank white raster with flyback lines.
L501 o/c.
14-09-04
Bush
1452 On
w
a
Blowing 2SD1554 - HT line varies.
C911 ( 47u f 25v ) leaky.
14-09-04
Bush
1452 On
w
a
Dead.
C909 ( 47u f 50v ) s/c.
14-09-04
Bush
1452 On
w
a
Going into standby.
Q404 ( 2SD1554 ) s/c.
14-09-04
Bush
1452 On
w
a
Height decreases as set warms up.
C911 ( 47u f 50v )
14-09-04
Bush
1452 On
w
a
No frame or line sync.
R619 ( 27ohm ) o/c.
14-09-04
Bush
1452 On
w
a
No sound or raster.
Dry on R913.
14-09-04
Bush
1452 On
w
a
Snowy raster - no tuning.
R646 ( 10k ) o/c.
14-09-04
Bush
1452 On
w
a
Squeal at switch on - then goes to standby.
Q404 ( 2SD1554 ) s/c.
14-09-04
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