TV
Repair Database
|
ITT |
30 |
Focus - control aching. |
Change CRT base not just
the control - it will do again. |
| ITT |
3493 |
No R/C, sound or col |
SAA1251 R/C dec chip |
|
ITT |
3538 |
St/by only - HT low at 40v |
LOPT (FAT3806 or HR6057) |
| ITT |
3621 |
Noise on pic then E/W dist & narrow |
T541 BC637 & R539 1k faulty due to overheating
& dry joints C521 |
|
ITT |
7180 |
Hiss only from left speaker |
IC3201 APU2470 on audio/scart
pcb u/s |
|
ITT |
7180 |
No sound - just buzz |
ADC2310 audio proc chip
IC3101 |
|
ITT |
Digi 3 |
The picture looks cloudy. |
Frame IC TDA2170 ,
plus change 100uf C402 or C602 by it. |
|
ITT |
Digi 3 |
There were three
alternative fault symptoms with t |
A cracked joint at one of
the Primary winding pins of the standby transformer produced the no go
problems. The sync problems |
|
ITT |
Digi-3 |
Blank raster - no sound. |
IC MDA2061
( Sel3776 52 07 ) on
front unit. |
|
ITT |
Digi-3 |
Colour - flickering. |
IC650 ( VCU2100 ) |
|
ITT |
Digi-3 |
Dead - blowing fuses. |
Frame IC s/c IC401
( TDA217p ) |
|
ITT |
Digi-3 |
Dead. |
Replace T716 , T711 , T726. |
|
ITT |
Digi-3 |
Dead. |
Replace D795
( MR856 ) s/c. |
|
ITT |
Digi-3 |
Grey scale flickering. |
Replace IC620
( DPU2540 ) on digital module. |
|
ITT |
Digi-3 |
No picture or sound - LED
not working. |
DJ on IC771. |
|
ITT |
Digi-3 |
No raster - EHT ok. |
R534 ( 560k ) o/c ,
VCU2100A chip. |
|
ITT |
Digi-3 |
No remote functions -
picture jumpin |
Replace IC640
( TPU2732 ) on digital module. |
|
ITT |
Digi-3 |
No sound |
Replace IC02
( MOA2061 ) on remote panel. |
|
ITT |
Digi-3 |
No sound. |
IC MDA2061
( Sel3776 52 07 ) on
front unit. |
|
ITT |
Digi-3 |
No text or remote functions
- picture jumping |
Replace IC640
( TPU2732 ) on digital module. |
|
ITT |
Digi-3 |
Picture jumping - no text
or remote func. |
Replace IC640
( TPU2732 ) on digital module. |
|
ITT |
Digi-3 |
Sound - mutes using stanby
but set stays on. |
Relay sticking. |
|
ITT |
Digi-3 |
Sound reduce part down then
thud to low sound |
IC MDA2061
( Sel3776 52 07 ) on
front unit |
|
ITT |
Digi-3 |
Spook on picture. |
IC1402 E-prom sel 3776
5207. |
|
ITT |
Digi-3 |
Teletext - shimmering -
picture ok. |
Replace IC640
( CPU2732 ) on digital board. |
|
ITT |
PICO S3 |
DEAD IF SCAN COILS
DISCONNECTED TRIES TO RUN |
WIDTH CCT ON SCAN COILS SC |
|
ITT |
PICO S3 |
STBY LED FLICKERS BUT DEAD
. PIN 4 LOPTX REMOVED P |
LOPTX US |
|
ITT |
110 Digi-3 |
Dead - blowing line
transistor. |
C714 int o/c. |
|
ITT |
1611 |
Dead - int. |
Dirty contacts on on/off
switch relay. |
|
ITT |
1660 |
No colour. |
C721 ( 100u f ) o/c. |
|
ITT |
2705 |
Tripping. |
BU208. |
|
ITT |
3425 80R |
Standby - going into
standby. |
IC1404 5 volt Reg. |
|
ITT |
3426 Comp B |
No colour. |
C891 s/c ,
IC800. |
|
ITT |
3447 Digi-3 |
No picture - sound &
EHT ok. |
D771 s/c , R771 o/c. |
|
ITT |
3447 Digi-3 |
No sound & blank raster
- stuck in AV mode. |
IC1401 pin 25 latched high. |
|
ITT |
3493 CVC1200 |
No sound - colour or
remote. |
IC SAA1251 Remote decoder
IC. |
|
ITT |
3493 CVC1200 |
No startup or light on in
standby but still o |
Check for shorted out relay
pins , Tx 4511 3109 faulty. |
|
ITT |
3493 CVC1200 |
Remote control inoperative |
IC SAA1251 |
|
ITT |
3732 CVC825P |
Frame - Hight & width
low. |
145v rail down - R651
( 120k ) high. |
|
ITT |
3732 CVC825P |
Width & hight low. |
145v rail down - R651
( 120k ) high. |
|
ITT |
3896 Digi-3 |
Dead. |
Replace D795 & T742
plus fuse. |
|
ITT |
3896 Digi-3 |
Flyback lines & white
raster. |
Replace D541 & R541. |
|
ITT |
3896 Digi-3 |
Frame reduced after 1 or 2
hours. |
Replace IC791. |
|
ITT |
3896 Digi-3 |
Lines flashing on picture. |
Replace IC1403
( MEA2901 ) on control panel. |
|
ITT |
3896 Digi-3 |
Lines on picture. |
Resolder DJ on frame IC
( IC401 ) |
|
ITT |
3896 Digi-3 |
No sound |
IC670 pin 11 low - C676
s/c. |
|
ITT |
3896 Digi-3 |
Raster - white with flyback
lines. |
Replace D541 & R541. |
|
ITT |
3896 Digi-3 |
Sound - hum or buzz if
using via "0" on scart |
MOD. required
( screening to cover the digital mod ) |
|
ITT |
3896 Digi-3 |
Teletext - flashing on 9's
ect. |
Replace IC640
( TPU2732 ) |
|
ITT |
3896 Digi-3 |
Teletext - no teletext. |
Replace IC02. |
|
ITT |
3896 Digi-3 |
Teletext - picture 2"
to left on teletext. |
Replace IC02. |
|
ITT |
3896 Digi-3 |
Tripping. |
Faulty sound IC5
( TDA2040 ) . |
|
ITT |
3896 Digi-3 |
Tuning - not storing. |
Replace IC1403
( MEA2901 ) on control panel. |
|
ITT |
4835 |
Standby - going into
standby int. |
HT preset incorectly
adjusted. |
|
ITT |
5861 |
Tripping. |
BU208. |
|
ITT |
80-90 deg CVC823 |
No results - PSU heavily
loaded. |
C1021 ( 270pf ) |
|
ITT |
80-90 deg CVC823 |
Slight hum bar & touchy
tuning. |
Cracked print at 90v supply
res capacitor C516 ( 10uf ) |
|
ITT |
80-90 deg CVC824 |
Screen flashing white - PSU
trips momentarily |
CRT. |
|
ITT |
80R |
Black streaking &
random channel change. |
Spark gap on crt base
panel. |
|
ITT |
80R |
Colour - flashing on &
off. |
Check C721
( 100u f ) |
|
ITT |
80R |
CUTS OUT AFTER 30mins
( INT!!!
) |
D772 IN POWER SUPPLY |
|
ITT |
80R |
Dead |
D733 145v RECTIFIER SC +
C734 10uF 450v OC |
|
ITT |
80R |
Dead - blowing BU at switch
on. |
C701 or track dry on T702. |
|
ITT |
80R |
Dead - comes on after
switching off. |
R405 ( 820k ) o/c. |
|
ITT |
80R |
Dead - destroys IC401 at sw
on |
C406 100µ 25v |
|
ITT |
80R |
Dead - intermittent. |
Dirty contacts on relay
operated on/off switch. |
|
ITT |
80R |
Dead. |
R422 ( 820k ) ,
R643 ( 1m )
, R405/R632 ( 820k ) |
|
ITT |
80R |
Flagging & intermittent
colour on ch 8. |
C721. |
|
ITT |
80R |
Frame foldover. |
C42 ) ( 220u f ) |
|
ITT |
80R |
INT GOES TO STBY |
CHANGE C703 , 713 TO 10uF
CONNECT 1R8 0.25W RESISTOR IN SERIES WITH D712 |
|
ITT |
80R |
Line tear and / or
striations on high scenes. |
Add 4.7k across winding of
TR712 ( R722/TR712 ) &
chassis. |
|
ITT |
80R |
PICTURE TOO WIDE |
TR563 BD135 |
|
ITT |
80R |
POWER SUPPLY WHISTLING
VOLTAGES LOW |
PULSE TRANSFORMER Tr712 |
|
ITT |
80R |
Raster - white line down
centre & blank ras. |
C606 ( 2200u f ) o/c. |
|
ITT |
80R |
SET SHUTS OFF
RUNS WITH 15k ACROSS TP 701 +
702 |
C703 1000uF 40v |
|
ITT |
80R |
Sound - has noise in
background. |
IC202 ( TDA1701 ) |
|
ITT |
80R |
Standby - light on - no
startup. |
D721/3 o/c , R716 high ,
check C703 little ( 10uf , 50v ) ,
D732/3. |
|
ITT |
80R |
Standby - permanently in
standby. |
T713 , fuse F651 o/c. |
|
ITT |
80R 110° |
Int no startup. |
C703 & C713
( 10u f , 50v ) little blue ones by BU heat sink. |
|
ITT |
80R 110° |
Standby - light on - no
startup. |
D721/3 o/c , R716 high ,
check C703 little ( 10uf , 50v ) ,
D732/3. |
|
ITT |
80R-90° |
Cuts out after 1/2 hour -
Ok if switched on. |
D772 ( 1N4148 )
in HT ajustment cct. |
|
ITT |
90 |
Dead. |
R405 ( 820k ) o/c |
|
ITT |
C14 Pica 1A |
No startup - Chattering
noise. |
D658 ( ZPY12 )
s/c set will work without it , BYZ88 no good. |
|
ITT |
C5122 Core 110 |
Flashing pic & no
tuning on highest chans |
33v Tuning reg |
|
ITT |
CB9604 CVC40 |
Flyback lines - A1 control
not working. |
R46/48 ( 820k )
on main PCB o/c. |
|
ITT |
CB9604 CVC40 |
No frame. |
T7 ( BC527 ) on
CMF40. |
|
ITT |
CD652 CVC25/3 |
Channels - stuck on channel
1. |
C5 leaky. |
| ITT |
Chassis 80R110 |
Set switches to Stby after running for a while. |
Change D761 13V zener.Seems to be OK with a Vom. |
| ITT |
Chassis 80R110 |
Set switches to Stby after running for a while. |
Change D761 13V zener.Seems to be OK with a Vom. |
|
ITT |
CMC301 |
No tuning. |
T1414 leaky. |
|
ITT |
CMC301 |
Standby - Intermittent
switching to S/B |
C1419 ( 2.7pf ) leaky. |
|
ITT |
CMC60 |
Tuning - drift. |
R68 ( 2.2k ) o/c. |
|
ITT |
CMR800 CMR800 |
Weak / distorted sound. |
C228 ( 100uf , 16v ) in
CMR IF. |
|
ITT |
CMR800/3 CMR800/3 |
No Sound. |
Check pin 11/12/9 for
11.5v. If missing IC202 TDA1035T. |
|
ITT |
CMR800/3 CMR800/3 |
Weak Field sync. |
If ok on weak signal Change
C209 ( 100uF ) |
|
ITT |
Compact 80 |
dead |
LOP Tr BU208A leaky - check
C713 4µ7 63v |
|
ITT |
Compact 80 |
Int goes into / won't come
out of st/by |
Dry joints 5v reg on R/C
panel |
|
ITT |
Compact 80 |
Int goes into st/by aft 1
min |
Disabling electronic fuse
gets tv going; Replace both tr's in electronic fuse (701/702 - BC238B) |
|
ITT |
Compact 80 |
Lines at bottom of pic with
whistling/vibration from chopper tfmr |
C713 4µ7 63v |
|
ITT |
Compact 80 |
No sound or chan display-
blank raster |
All secondary supplies
slightly low; no 12v to control panel. IC521 12v reg on back of CMR800 |
|
ITT |
Compact 80 |
Pulling pic |
C212 10µ cap in CMR800
(near top of can) |
|
ITT |
Compact 80 |
Pulling/bouncing pic |
2 x 10µ & 1 x 100µ
caps in CMR803 middle sect |
|
ITT |
Compact 80 |
Ringing on verticals |
C733 10µ 160v |
|
ITT |
Compact 80 |
Spots on pic |
Comes & goes when focus
pot tapped - pot faulty |
|
ITT |
Compact 80 |
St/by only |
C703 10µ 50v |
|
ITT |
Compact 80 |
St/by only |
OK on dummy load with scan
coils removed - CRT soft |
| ITT |
Compact 80R |
Dead |
C701, D712 & D714 |
| ITT |
Compact 80R |
Dead with electronic fuse tripped |
C703 or s/c LOPTx or s/c on LOP supply lines |
| ITT |
Compact 80R |
No pic - no scastle pulse at decoder |
T401 BC238B |
|
ITT |
Compact B |
Partial field collapse |
TDA3654 field chip |
|
ITT |
Compact B 110 |
Poor sync/sound mute |
4µ7 in if can |
|
ITT |
Compact B 110 |
Video pulling/overshoot |
C1009 & C1044 10µ 50v
on crt base |
|
ITT |
Compact D2 |
Buzz on sound |
C242 0µ47 & C244 47µ
in IF can |
|
ITT |
Core |
LOP tr int blows |
Caused by arcing from scan
coil plug |
|
ITT |
Core 110deg |
Dead - st/by LED gives 1
quick flash at sw on |
LOPTx - code TFHR6175 CPC |
|
ITT |
Core 110deg |
Int off - HT 145v (95v)
24v=14v; 16v ok |
C723 2n2 4kv was not
soldered in properly |
|
ITT |
Core 110deg |
No front panel controls -
R/C ok |
T1454 BC328 leaky |
|
ITT |
Core 110deg |
Pic pulling esp at top |
C527 100µ 35v, C522 100µ
25v |
|
ITT |
Core 2 110deg |
Small pic with ballooning |
R536 33k in anti breathing
cct o/c |
|
ITT |
Core 2 90deg |
Wont turn on from st/by -
ok from switch |
D702 11v zener leaky in st/by
supply |
|
ITT |
CP2352 |
Tuning - drifting of tune
after 15 mins. |
IC1403 SAA1174 on CMC301. |
|
ITT |
CP3106 Pico S |
Frame - reduced. |
If IC401 pin 9 down to 19v
suspect LOPTX. |
|
ITT |
CP3128 CORE 2 |
SET GOES INTO STBY BUT
WON'T COME OUT |
CHECK D702 11v ZENER
, R655 2k7
, R701 THERMISTOR |
|
ITT |
CP332 CVC40 |
Dead - Intermittent shut
down. |
BU208A loose bolt. |
|
ITT |
CP332 CVC40 |
Frame collapse. |
R2003 ( 1k ) field
hold control o/c. |
|
ITT |
CS0614 CVC823P |
No sound or picture - stuck
on channel 1. |
IC on front unit SAA1251. |
|
ITT |
CS0624/1/T CVC824 |
No sound or picture - seems
like tripler. |
D513 ( RGP30M )
behind angled heat sink R/H side PCB. |
|
ITT |
CT1600 CVC824 |
122v rail going low. |
Change T617
( BC238 ) |
|
ITT |
CT1600 CVC824 |
Bars on saturated colours. |
C312 ( 2.2uf ) o/c. |
|
ITT |
CT1600 CVC824 |
Dark lines on colour. |
C312 ( 2.2uf ) o/c. |
|
ITT |
CT23304 Trimline |
Low gain. |
S/C in tuner IF unit. |
|
ITT |
CT23304 Trimline |
No colour |
IC870 ( TDA3561 ) |
|
ITT |
CT23304 Trimline |
Sound - low. |
Resolder DJ in audio stage. |
|
ITT |
CT2500 CVC1150 |
Dead. |
TR716 , 715 , D685 s/c ,
caused by TR731 ( BC328-52 )
s/c , D714 |
|
ITT |
CT2512 CVC1200 |
No EHT. |
TR741 ( BC328 ) right
hand side of chassis. |
|
ITT |
CT2512 CVC1200 |
No go Standby LED on. |
R744 o/c right hand side of
chassis. |
|
ITT |
CT2600 CVC1210 |
Dead - with ticking noise. |
BU208A , T562 ( BD135 )
, R503 ( 100ohm ) if
LOPTX hot change it. |
|
ITT |
CT2712 CVC1200 |
White raster with flyback
lines. |
Diodes by BU208 go s/c , a
Ristor burnt up ( use BY133 ) |
|
ITT |
CT2712 CVC1203 |
Dead. |
MR diode s/c , may have
taken tripler. |
|
ITT |
CT2712 CVC1203 |
No Frame - resistor R522
burnt up. |
R522 is a 0.47R
, D523 ( BA158 )
, TBA2653A |
|
ITT |
CT2712 CVC1203 |
No tuner voltage. |
R522 is a 0.47R
, D523
( BA158 ) ,
TBA2653A |
|
ITT |
CT3306 Mono A |
No sync. |
C609 ( 100pf ) ceramic
off pin 7 TDA2579 |
|
ITT |
CT3315 Pico S |
Dark picture. |
270k resistor in 1st anode
supply. |
|
ITT |
CT3325 Pico S |
No colour after few hours. |
T1410 in tuner control unit
( IFB351 ) |
|
ITT |
CT3326 |
AFTER 10 MINS CHANNEL
DISPLAY FLASHES AND SET GOE |
IC1405 5v REG INT OC
( MAY CAUSE TUNING
INFO TO BE LOST ) |
|
ITT |
CT3326 Mono B |
Dead - 115v at BU508D
collector. |
Try LOPTX see Tv mag. |
|
ITT |
CT3326 Mono B |
Startup - no startup - int. |
C701 , C707 ( 2.2u f ) |
|
ITT |
CT3414 |
Line ringing |
C724 18000pf u/s |
|
ITT |
CT3425 80R |
Flyback - white screen
& flyback lines. |
A1 control cracked , R544
( 820k ) |
|
ITT |
CT3425 80R |
Standby - going into
standby. |
IC1404 5 volt Reg. |
|
ITT |
CT3425 80R 110° |
Standby - intermittent
going to standby. |
Power Tx on main PCB by
loptx. |
|
ITT |
CT3435 |
St/by only |
LOPTx - LOT192 Grandata u/s |
|
ITT |
CT3436 Trimline |
Brightness at maximum. |
T1412 ( BC546 ) |
|
ITT |
CT3437 Comp B |
No startup just a low
single thud. |
LOPTX D050/37 TFAT 3806 |
| ITT |
CT3537 |
Int dead |
IC405 5v reg |
|
ITT |
CT3725/1 80R |
Stuck in standby - with a
noise from LTB. |
D732 ( BY500-400 ) s/c
can use a RGP30 |
|
ITT |
CT3835 |
NO PICTURE RASTER OK |
T401 BC548 OC
( NO SANDCASTLE PULSES
) |
|
ITT |
CT3835 Comp 80 |
Going into standby after a
few minutes. |
C703 ( 10u f , 50v ) little
blue one. |
|
ITT |
CT600 80R |
Line pulling or jitter
intermittent. |
Pk on video button - check
VCR switch for grease on pins |
|
ITT |
CT600 CVC823 |
Line pulling - two or three
times a second. |
VCR switch on PB unit. |
|
ITT |
CTV1204 CVC1204 |
Dead. |
Blows BU508 at switch on ,
check C701 for s/c. |
