TV
Repair Database
|
Amstrad |
3021N |
Dead |
Q1 BUZ90A s/c, F01 2A o/c,
R1 270k 1w o/c, R5 680k also replaced |
|
Amstrad |
3121N 11AK12 |
St/by only - psu o/ps
present except 12 & 8v |
IC301 (CTV352/V1.4) and
IC302 (ST24C02AB1). |
|
Amstrad |
3128N |
Dead |
C599 2,200pf s/c, Q101
BUZ90AF s/c, R101 5R6 5w o/c |
|
Amstrad |
3128N |
Hor black lines thro' pic |
C454 10µ 25v o/c |
|
Amstrad |
CTV1000 |
Blank white raster , sound
control o/c |
Q7601 ( 25C1675 )
, C7901 ( 240pf ) S/C
tune/f |
|
Amstrad |
CTV1000 |
Line collapse |
Dry joints line lin coil
L7702 |
|
Amstrad |
CTV1000 |
Line hold drifts int. |
Dry on line hold control |
|
Amstrad |
CTV1000 |
Raster - blank - sound Ok. |
Q7601 ( 2SC1675 )
C7901 ( 240PF ) S/C |
|
Amstrad |
CTV12 |
Weak/no sound |
R151 39k near lh edge of
pcb o/c |
|
Amstrad |
CTV1400 |
Buzzing - intermittent. |
Adjustable capacitor on
sound IF subpanel. |
|
Amstrad |
CTV1400 |
Col flickers/fback lines |
F o/p tr Q702 coll only 32v
(62v) - C739 100µ o/c |
|
Amstrad |
CTV1400 |
Dead |
Fusible R529 0R68 1w Pt no
242741 |
|
Amstrad |
CTV1400 |
Dead - int |
Crack in print between pin
6 LOPTX and R749 |
|
Amstrad |
CTV1400 |
Dead - int dead. |
Drys around STK. |
|
Amstrad |
CTV1400 |
Dead - int. |
Line transistor Q705
collector connection o/c. |
|
Amstrad |
CTV1400 |
dead except for slight buzz |
HT ok but not reaching lop
tr - break in print between lopt pin 11 & lop tr |
|
Amstrad |
CTV1400 |
Dead lop tr s/c |
Dry joints line dr tfmr
T701 |
|
Amstrad |
CTV1400 |
Dead with whine from psu |
dry joints line dr tfmr |
|
Amstrad |
CTV1400 |
Flyback lines & colour
flickering |
C739 ( 100u f ) o/c |
|
Amstrad |
CTV1400 |
Flyback/Txt lines at top of
screen |
C739 100µ 50v hi esr |
|
Amstrad |
CTV1400 |
int dead |
dry joints lop tr (look ok
by sight) |
|
Amstrad |
CTV1400 |
Int Dead |
IC502 STR451 gets hot -
T501 chopper tfmr faulty |
|
Amstrad |
CTV1400 |
Int line sync on chan
change |
D715 & D704 faulty |
|
Amstrad |
CTV1400 |
Int pic - once a week touch |
Int A1 due to LOPTx faulty |
|
Amstrad |
CTV1400 |
Int sound level & buzz |
Adj cap on sound if sub
panel |
|
Amstrad |
CTV1400 |
Loses Line Sync during
Channel Change |
D715 & D704 |
|
Amstrad |
CTV1400 |
No line sync during channel
change. |
Replace zeners D715 &
D704. |
|
Amstrad |
CTV1400 |
Sound going low - int. |
Adjustable capacitor on
sound IF subpanel. |
|
Amstrad |
CTV1400 |
Weak contrast |
R410 120k at pin 2 lopt |
|
Amstrad |
CTV1400 (new) |
Cogged pic |
C517 33µ 160v between
chopper & lop tfmrs |
|
Amstrad |
CTV1400T |
Dead after C508 47µ &
C509 10µ went o/c in PSU |
Q504
2SC5287; Q503 BC547B; Q502 BC557B; R529 2R2 3W; now tripping - Q507
BUT11AF s/c; Q402 BU2508DF |
|
Amstrad |
CTV1401 |
Buzz on sound/caption buzz |
adj if o/p coil in tuner or
replace tuner |
|
Amstrad |
CTV1401 |
Dist sound |
R356 10k o/c |
|
Amstrad |
CTV1401 |
Interference bands across
screen - affects other tvs in w/s |
Mains sw |
|
Amstrad |
CTV1401 |
Tuning - drift. |
Tuner unit. |
|
Amstrad |
CTV1401 |
Weak & distorted sound. |
R356 ( 10k ) o/c |
|
Amstrad |
CTV1409 |
Frame jitter. |
R427 ( 220k )
replace with 180k |
|
Amstrad |
CTV1410 |
Dead |
R302 6k8 o/c |
|
Amstrad |
CTV1410 |
Dead |
o/c relay contacts RLY901 |
|
Amstrad |
CTV1410 |
Dead - chopper tr 2SD1545
blown |
Check Q902 2SB774, ZD902
9v1 zener |
|
Amstrad |
CTV1410 |
Field roll on bright scenes |
C304 2µ2 |
|
Amstrad |
CTV1410 |
Height reduced |
R302 6k8 hi res |
|
Amstrad |
CTV1410 |
Int field collapse |
C404 0.022µ |
|
Amstrad |
CTV1410 |
Int frame collapse. |
Change C401 ( 1nf )
, C403 ( .1uf ) , C404 ( 0.022uf ) ,
C405 ( 1nf ) |
|
Amstrad |
CTV1410 |
Low emission tube symptom |
R650 & R651 4k7 hi res |
|
Amstrad |
CTV1410 |
No chan store |
No -30v to eeprom - C602
10nF |
|
Amstrad |
CTV1410 |
No colour on picture - OSD
colours Ok. |
C322 ( 22nf )
low. |
|
Amstrad |
CTV1410 |
No or int no frame scan. |
C403/4/5. |
|
Amstrad |
CTV1410 |
No pic - faint raster when
A1s advanced |
No scastle pulses pin 17
IC301 - R316 12k o/c |
|
Amstrad |
CTV1410 |
No sound or raster. |
ZD301 ( 9.1zener ) s/c. |
|
Amstrad |
CTV1410 |
Vol at max, osd perm on, no
tuning |
MN1220 EEPROM - use Alba
version (cheaper) |
|
Amstrad |
CTV1410Onwa |
Field cramp atbottom |
R408 18k o/c |
|
Amstrad |
CTV1600 |
Field collapse |
R709 22k o/c |
|
Amstrad |
CTV1600 |
Field collapse |
Dry joint pin12 LA7800
timebase chip (12v supply) |
|
Amstrad |
CTV1600 |
Frame - no field scan. |
R709 ( 22k )
in series with field hold control o/c. |
|
Amstrad |
CTV200 |
No sound or picture |
R726 ( 1ohm , 1W ) O/C |
|
Amstrad |
CTV2000 |
Dead |
Check C509 for o/c Or R726
( 1k ) o/c |
|
Amstrad |
CTV2000 |
Distorted sound. |
R313 high in value. |
|
Amstrad |
CTV2000 |
Field collapse |
Check V at pin 9 TDA3652
( 28V ) & V
at pins 12 & 15 LA7800 .If no 12V at pin 12 R840
( 10ohm ) 2Watt o/c |
|
Amstrad |
CTV2000 |
Field top foldover |
C720 4µ7 160v |
|
Amstrad |
CTV2000 |
Int going off. |
LOPTX arcing. |
|
Amstrad |
CTV2000 |
Reduced height/foldover |
C720 4µ 160v o/c |
|
Amstrad |
CTV2110 |
Dead - psu failure |
Apparently
C410 was fitted the wrong way in some sets causing R 418
& R419 to overheat
which causes the power supply to fail and heat damage to the PCB |
|
Amstrad |
CTV2110 |
Dead - psu working |
IC302 AN5601 jungle chip
s/c at supply pin. When replaced, sparks from crack in print under lopt-
repair & new AN5601 chip |
|
Amstrad |
CTV2110 |
Field collapse |
ZD403 12v zener s/c &
R435 5R6 o/c |
|
Amstrad |
CTV2110 |
HT reg poor |
C409 & C410 47µ |
|
Amstrad |
CTV2110 |
No sound |
R368 2k2, D302/303 in sound
mute cct damaged by arcing under lopt |
|
Amstrad |
CTV2110 |
No sync |
R395 82k connected to pin
30 of AN5601K jungle chip |
|
Amstrad |
CTV2110 |
pic. varying in size or
dead (may be intermittent) |
it is a common fault with
DJ's on Q406, however, it didn't
survive in my case. So Q406 2SC2335 s/c and DJ, Q405 2SA1013 s/c, R421 1.5
kOhm 0.25W o/c. |
|
Amstrad |
CTV2110 |
Stuck in standby. |
ZD403 S.C. - R435 OC. FIELD
STAGE ALSO CHECK C409 AND C410. 12v ZENER ,
5.6ohm , 47mfd |
|
Amstrad |
CTV2200 |
After few hours top of pic
compresses |
C812 ( 0.018uF ) 160V
( in feedback TDA3652
& LA7800 ) |
|
Amstrad |
CTV2200 |
Blows line dr & o/p tr |
dry joints line dr tfmr |
|
Amstrad |
CTV2200 |
Dead |
Dry joint On L503 ,
Q503 , D806 o/c |
|
Amstrad |
CTV2200 |
Dead |
D806 s/c |
|
Amstrad |
CTV2200 |
Dead - blowing line o/p
transistor. |
Change C845 ( 4.7u f )
, C853/4 ( 1u f )
, C815 ( 0.01u f ) ,
C862 if on. |
|
Amstrad |
CTV2200 |
Dead - blown fuse. |
R814 ( 27ohm ) line
o/p & chopper transistor , C845 (
4.7uf ) |
|
Amstrad |
CTV2200 |
Dead - blown fuse. |
Line o/p Q802 , Chopper
Q802 , R501 , F502 fuse. |
|
Amstrad |
CTV2200 |
Dead - chopper tr s/c |
R814 27R 20w o/c due to
C845 4µ 250v s/c |
|
Amstrad |
CTV2200 |
Dead - int. |
Drys on T801 , T803 &
coil L503. |
|
Amstrad |
CTV2200 |
Dead No obvious S/C no StBy
light |
Check 12V reg IC103 &
C524 ( 470uF ) |
|
Amstrad |
CTV2200 |
Dead. |
R501 ( 5.6ohm 5W ) o/c. |
|
Amstrad |
CTV2200 |
Dead. |
R814 ( 27ohm , 20w ) ,
fuse , chopper tran , C845 4.7uf |
|
Amstrad |
CTV2200 |
Dead. |
Q501 , Q802 , Q503 caused
by drys on transformer T801. |
|
Amstrad |
CTV2200 |
Distorted sound |
R313 100R |
|
Amstrad |
CTV2200 |
Field collapse |
C828 100µ 35v & check
IC801 |
|
Amstrad |
CTV2200 |
Field collapse |
R838 10R safety res o/c |
|
Amstrad |
CTV2200 |
Field cramp at top |
C812 18n 160v |
|
Amstrad |
CTV2200 |
Field jitter pic rolls int |
Replace C814
( 470uF ) 35V |
|
Amstrad |
CTV2200 |
Field jitter/rolling |
C814 470µ 35v |
|
Amstrad |
CTV2200 |
Frame collapse |
D809 O/C
( DFA056 ) , IC801 ( TDA356 )
TDA3652 |
|
Amstrad |
CTV2200 |
Frame jitter or roll on
channel change. |
Set Vertical hold to centre |
|
Amstrad |
CTV2200 |
Frame Jitter Or Rolling On
Channel Change |
Adjust Vertical Hold
Control To Centre Of Track |
|
Amstrad |
CTV2200 |
Int trip off & shut
down |
Loptx arcing (seen in dark) |
|
Amstrad |
CTV2200 |
Low & distorted sound |
R313 ( 100ohm ) o/c. |
|
Amstrad |
CTV2200 |
Self destructs |
Caused by dry joints line
dr tfmr T801 (Blows Q501, Q802, Q503) |
|
Amstrad |
CTV2200 |
Tripping. |
C845 ( 4.7u f , 250v ) s/c. |
|
Amstrad |
CTV2210 |
dead |
Q501 chopper tr s/c, C853 1µ
160v blown up, No line osc - LA7800 chip faulty |
|
Amstrad |
CTV2210 |
Dead - blown fuse. |
R814 ( 27ohm ) line
o/p & chopper transistor , C845 (
4.7uf ) |
|
Amstrad |
CTV2210 |
dead - whistles at sw on
then trips |
HT low at 100v then trips -
ok on dummy load, D806 on lopt sec s/c used RGP10M |
|
Amstrad |
CTV2210 |
Dead. |
R814 ( 27ohm , 20w ) ,
fuse , chopper tran , C845 4.7uf |
|
Amstrad |
CTV2210 |
Dead. |
R501 ( 5.6ohm 5W ) o/c. |
|
Amstrad |
CTV2210 |
Dist sound |
R313 Q301 feed res o/c |
|
Amstrad |
CTV2210 |
Low & distorted sound. |
R313 ( 100ohm ) o/c. |
|
Amstrad |
CTV2210 |
Set Stuck in StBy will
start but goes into StBy |
Check ZD403 in field stage
R435 ( 5.6ohm )
C409 & C410 |
|
Amstrad |
CTV2210 |
Tripping. |
C845 ( 4.7u f , 250v ) s/c. |
|
Amstrad |
CTV250 |
Bright raster with fb lines |
TEA5101A driver on crt base
failed & feed res |
|
Amstrad |
CTV250 |
dim red raster |
TDA3301B decoder chip u/s |
|
Amstrad |
CTV250 |
int off |
dry joints chopper tfmr |
|
Amstrad |
CTV250 |
No contrast |
Tr102 BC558 leaky c-e |
|
Amstrad |
CTV250 |
No secondary supplies |
Replaced C418 100µ 25v,
C489 100µ 40v, C425 1µ 400v, positor PTC401, R422 5R6 1w o/c, and
chopper tfmr |
|
Amstrad |
CTV250/280 |
E/W int |
dry joints CH351 choke
feeding pin 5 IC351 TDA8145 |
|
Amstrad |
CTV280 |
No sound |
T281 on nicam pcb |
|
Amstrad |
CTV280N |
Lack of width with no
control |
R423 2k2 o/c - connected to width pot |
|
Amstrad |
CTV280N |
Small pic varies in size
with scene changes |
C926 22µ 160v; C424 22µ
160v; near loptx hi esr |
|
Amstrad |
CTV3012 |
Int line - line drive low in fault condition |
R601 4k7 hi res (12k) |
|
Amstrad |
CTV3021N |
Dead - chopper Tr s/c &
fuse o/c |
R4 270k o/c & TDA4605-3
(must have "3" suffix) |
|
Amstrad |
CTV3028 |
Dead |
Mains bridge rect s/c &
fuse o/c - fit 2n2 1kv caps across rects to prevent re-ocurrence |
|
Amstrad |
CTV3028N |
Dead - 2A fuse o/c; BUZ90AF
chopper s/c |
R108 270k o/c & LOP tr
for tripping |
|
Amstrad |
CTV3028N |
No tuning |
R124 15k 1w o/c near
chopper tfmr under tube |
|
Amstrad |
CTV3032N |
Manual tuning |
press
1 - press TV- press menu and hold it, the first menu is for sound keep the
button pressed and the
OVERVIEW menu appears
then release and press menu again this will give you a tuning menu,
select the preset number then- with the cursor keys move down to
tune and when you get the station you want move down to store then press
vol + the word stored appears and then press TV |
|
Amstrad |
CTV3128 |
Field scan only 2 ins plus
no sigs |
R124 15k 1w o/c - supplies
tuning & pin 43 TDA8361 jungle chip |
|
Amstrad |
CTV3128N |
Field collapse, narrow
& no sound |
No 8v to pin 10 IC1101
TDA8361A IF/col/tbase chip. L300 1µ3 coil o/c |
|
Amstrad |
CTV3128N |
Tripping quietly - s/c
across LOP |
C599 2n2 2kv disc ceramic
s/c |
|
Amstrad |
STV20 |
No startup - relay
chattering. |
R1997 ( 3.3MR )
gone high. |
|
Amstrad |
STV20 |
St/by only |
R1997 2M2 o/c |
|
Amstrad |
STV20 |
Whistle from psu |
STK73907 IC1901 |
|
Amstrad |
STV2100N |
Red tint varies |
Black conductive gunge near
dec chip - scrape away all gunge |
|
Amstrad |
TVR1 |
DARK PIC |
R1640 220K |
|
Amstrad |
TVR1 |
Dead fuse Ok - relay
clicks. |
C1509 ( 3 , 300pf 1KV )
, R1502 ( 27ohm5w ) o/c , C1507 ( 1uf50v ) |
|
Amstrad |
TVR1 |
dead with burning smell |
C1509 3,300pf burnt |
|
Amstrad |
TVR1 |
Dead. |
R1410 ( 4.7ohm 2w ) left
of LOPTX o/c. |
|
Amstrad |
TVR1 |
Goes dead aft short time |
D1507 ,
C1511 100mfd ,
160v |
|
Amstrad |
TVR1 |
Goes off with whine if sw
on from warm |
D1507 & C1511 100µ
160v |
|
Amstrad |
TVR1 |
Long time to come on |
C1507 0µ22 |
|
Amstrad |
TVR1 |
No frame. |
D1404 ( PR156 )
, R1415 ( 2.2R ) |
|
Amstrad |
TVR1 |
No Tv function. |
C1507 ( 0.22uf 50V )
, D1507 ( B7299 ) s/c
, R1503/4 ( 270k ) high
or o/c. |
|
Amstrad |
TVR1 |
Pic pulses small when brill
advanced |
HT in sympathy with pic
size IC1501 STK7348 |
|
Amstrad |
TVR1 |
Startup - slow. |
C1507 ( .22uf ) in
PSU , may check ok. |
|
Amstrad |
TVR1 |
Takes up to 15 minutes to
start. |
R1504 ( 270k )
gone high. |
|
Amstrad |
TVR1 |
Uncontrollable sound. |
IC AN5265. |
|
Amstrad |
TVR2 |
Dead |
R1501 8R2 5W surge lim o/c |
|
Amstrad |
TVR2 |
Dead |
D1606 FR304 across lop s/c |
|
Amstrad |
TVR2 |
Dead - No 5v Supply |
IC402 - 5v Reg |
|
Amstrad |
TVR2 |
Dead Start's Up After About
One Hour |
C1507 ( 0.47uf ) -
Change to 1uf |
|
Amstrad |
TVR2 |
Dead. |
R1501 8.2R
5W o/c |
|
Amstrad |
TVR2 |
Dead. |
D1606 type FR304 s/c. |
|
Amstrad |
TVR2 |
Int then perm dead |
T401 line dr tfmr pri going
o/c |
|
Amstrad |
TVR2 |
Long time to come on |
C1507 0µ47 faulty - fit 1µ |
|
Amstrad |
TVR2 |
Long time to come on (˝hr) |
C1517 low cap |
|
Amstrad |
TVR2 |
No sound |
IC1301 pin 4 0v (5-7v)
C1137 47µ s/c |
|
Amstrad |
TVR2 |
Ragged verts |
CC1409 1nf 2kv o/c |
|
Amstrad |
TVR2 |
STK7348 has extremely short
life |
C1509 3300pf 1kv in snubber
network |
|
Amstrad |
TVR2 |
TV sect dead |
C1507 1µ |
|
Amstrad |
TVR2 |
Dead |
Check C1507 , C1511 , C1514
& D1506 For s/c |
|
Amstrad |
TVR2 |
Dead |
Check Bridge Rectfifer
& 10R Series Resitor |
|
Amstrad |
TVR2 |
DEAD OR INT DEAD |
C1507 1uF 50v |
|
Amstrad |
TVR2 |
Dead. |
Check if mains relay is
being energised if not - fuse , C1507
( 1uf ) |
|
Amstrad |
TVR2 |
Loss of one colour. |
IC ( uPC1420 ) |
|
Amstrad |
TVR2 |
No colour |
IC ( uPC1420 ) |
|
Amstrad |
TVR2 |
OSG - no on-screen
graphics. |
14DN379/MN14831 IC. |
|
Amstrad |
TVR2 |
Startup - Slow. |
C1507 ( 0.47uf ) change
to 1uf. |
|
Amstrad |
TVR2 |
Startup - Tv section will
not switch on. |
C1507 ( 1uf ) |
|
Amstrad |
TVR2 |
Tunes Ok - but does not
store data |
IC MN1225 |
|
Amstrad |
TVR2 |
Tuning - will not store. |
IC MN1200 RAM IC. |
|
Amstrad |
TVR2 |
Tuning - will not tune in. |
14DN379/MN14831 IC. |
|
Amstrad |
TVR2 |
Will only play at switch
on. |
Check the repeat switch at
rear of set is off. |
|
Amstrad |
TVR2/3 |
Dead |
If relay clicks check 10R
7w res in series with bridge rect |
|
Amstrad |
TVR2/3 |
Dead |
STK7348 IC301 s/c between
pins 8 & 10 |
|
Amstrad |
TVR2/3 |
No tune store |
MN1220 RAM -
14DN379/MN14831 chip |
|
Amstrad |
TVR3 |
Colour drops out |
IC10 UPC1420 |
|
Amstrad |
TVR3 |
Colour fades off |
µPC1420CA IC10 |
|
Amstrad |
TVR3 |
corrugated pics |
C91 22µ 16v |
|
Amstrad |
TVR3 |
Dead |
D306 SC |
|
Amstrad |
TVR3 |
Dead |
Check D306 : IC301 : C310 :
R301 : C307 |
|
Amstrad |
TVR3 |
Dead |
D306 FR304 120v rect s/c |
|
Amstrad |
TVR3 |
Dead |
C310 3300pf 1kv split, 4A
fuse o/c STK7348, C307 1µ 50v, C314 470µ 16v |
|
Amstrad |
TVR3 |
Dead except for whistle |
C310 IN POWER SUPPLY 3.3nF
2kv |
|
Amstrad |
TVR3 |
dead with power to vcr |
C310 3300pf 1Kv
burnt |
|
Amstrad |
TVR3 |
Dead. |
D306 ( FR304 )
s/c 120v feed to TB. |
|
Amstrad |
TVR3 |
Dead. |
W/W resistor o/c by STK if
blows change STK7348 |
|
Amstrad |
TVR3 |
Dead. |
Check IC301 & R301 For
o/c |
|
Amstrad |
TVR3 |
Dead. |
C307 ( 1uf , 50v ) |
|
Amstrad |
TVR3 |
Dead. |
Check Bridge Rectifier And
10 Ohm Series resistor |
|
Amstrad |
TVR3 |
Int dead |
D21 9v1 ZENER |
|
Amstrad |
TVR3 |
Lack of G |
G o/p tr u/s though checked
ok on meter |
|
Amstrad |
TVR3 |
Line disturbance on dark
scenes |
STK7348 IC301 |
|
Amstrad |
TVR3 |
Long time to come on |
C307 1µ 50v faulty |
|
Amstrad |
TVR3 |
No colour after a long
time. |
IC10 ( u PC1420CA ) 48pin. |
|
Amstrad |
TVR3 |
No tuning |
No 12v at tuner pin BU -
IC2 LA7913 band sw chip |
|
Amstrad |
TVR3 |
OSG - no on-screen
graphics. |
14DN379/MN14831 IC. |
|
Amstrad |
TVR3 |
Pic varies in size with
brightness when heated |
STK7348 & R301 curr lim
Res - fails again when replaced - a design fault? Make sure heat sink is
adequate |
|
Amstrad |
TVR3 |
Screeming |
C310 3300pf 1Kv disc cap |
|
Amstrad |
TVR3 |
Set goes dead when sw
on/off when heated |
Design fault suspected |
|
Amstrad |
TVR3 |
Slow start |
C307 1µ 50v |
|
Amstrad |
TVR3 |
Tunes Ok - but does not
store data |
IC MN1225 |
|
Amstrad |
TVR3 |
Tuning - will not store. |
14DN379/MN14831 IC. |
|
Amstrad |
TVR3 |
Tuning - will not tune in. |
14DN379/MN14831 IC. |
|
Amstrad |
WSTV3032N |
Accessing service mode |
Enter code 089 |
|
Amstrad |
WSTV3032N |
Removing child lock |
