TV
Repair Database
|
Ferguson |
TX |
No audio LED alight. |
Change C1107 by IC1101 from
33pf to a 100pf. |
|
Ferguson |
TX |
No sound & mute light
on slightly. |
Check D116/D115. |
|
Ferguson |
TX |
Sound - volume will not
adjust right down. |
Change R943 from 470R
to 100R & R941
from 3k3 to 6k8 |
|
Ferguson |
TX10 |
½" wide black line
across the picture. |
IC TDA2576A |
|
Ferguson |
TX10 |
205v rail low - white
screen & flyback lines. |
C726 ( 22u f ) o/c
205v rail low. |
|
Ferguson |
TX10 |
As set warms up picture
narrows & trips. |
D831 ( BY226 )
D743 in later models |
|
Ferguson |
TX10 |
Bar graph display at switch
on - intermittent |
D1441 out of tolerance. |
|
Ferguson |
TX10 |
Beam current - Poor beam
current. |
Change R732 from 330k to
180k. |
|
Ferguson |
TX10 |
Bent verticals on high
contrast. |
Add underboard link between
earth end of C742/C745. |
|
Ferguson |
TX10 |
Black bars on L/H side -
striations. |
Poor earth C Reg. |
|
Ferguson |
TX10 |
Black horizontal lines
across screen. |
C776 ( 100nf ) o/c. |
|
Ferguson |
TX10 |
Blank raster - no sound |
S/c in sigs module - module
replaced |
|
Ferguson |
TX10 |
Blowing - TR801
( BC547 ) transistor. |
Focus unit caused fault. |
|
Ferguson |
TX10 |
Blowing BU208. |
Arcing bt solder spills on
line scan yoke tagboard. |
|
Ferguson |
TX10 |
Bouncing/pulling |
C35 1µ in IF unit |
|
Ferguson |
TX10 |
bright lines at bottom of
pic |
TDA3654 fop chip |
|
Ferguson |
TX10 |
Bright raster with fb lines |
All crt cathodes at 20v;
R728 10k o/c; C732 s/c -40v smoothing |
|
Ferguson |
TX10 |
Brightness - low - rest ok. |
12v rail low C606 , RV601 ,
C604 , L604 , IC601 CRT Base (
white ) |
|
Ferguson |
TX10 |
Brightness - low. |
Check A1 preset may be
arcing to ground , R832 ( 150k ) o/c. |
|
Ferguson |
TX10 |
Brightness - low. |
D657 LED &/or one of
o/p transistors on CRT base or Base |
|
Ferguson |
TX10 |
Burglar alarm fuse blown. |
Replace 63Ma to 200Ma. |
|
Ferguson |
TX10 |
Burn on CRT. |
R834 ( 1M8 ) o/c ,
A1 pot earthing resistor. |
|
Ferguson |
TX10 |
Centre of screen has poor
interlace. |
C776 o/c. |
|
Ferguson |
TX10 |
Channel - 1 memory lost at
switch on. |
D345 leaky. |
|
Ferguson |
TX10 |
Channel - change random -
tripping. |
R810 ( 150k ) o/c. |
|
Ferguson |
TX10 |
Channel - changing channels
- Int. |
Focus unit - faulty
insulation. |
|
Ferguson |
TX10 |
Channel - intermittent
changing. |
Focus control arcing. |
|
Ferguson |
TX10 |
Channel - selection faulty. |
C930 & C931. |
|
Ferguson |
TX10 |
Colour - flickering. |
R627. |
|
Ferguson |
TX10 |
Continuous tripping |
TDA3652 field o/p chip was
the cause |
|
Ferguson |
TX10 |
Contrast - low contrast. |
732 150-180. |
|
Ferguson |
TX10 |
Dark lines at top of
picture. |
R16 ( 680R ) |
|
Ferguson |
TX10 |
Dark picture - int. |
Check first anode preset
slider control. |
|
Ferguson |
TX10 |
Dark picture. |
Drys on RGB transistors on
CRT base , R832 ( 150k ) o/c. |
|
Ferguson |
TX10 |
Dead - all HT lines low. |
R813 ( 121k ) |
|
Ferguson |
TX10 |
Dead - blowing BU208. |
Try fitting more mica
washers. |
|
Ferguson |
TX10 |
Dead - blowing chopper
transistor instantly. |
T705. ( by lifting D731 chopper does not blow )
R724 o/c. |
|
Ferguson |
TX10 |
Dead - blowing chopper
transistor. |
D704 , C711 o/c , C712 dry
jointed , drys on T705. |
|
Ferguson |
TX10 |
Dead - blowing fuse. |
Drys on degaussing
thermistor. |
|
Ferguson |
TX10 |
Dead - blowing fusible
resistor. |
Thyristor DA12 , DR03 ,
Thyristor DU04 , TU07. |
|
Ferguson |
TX10 |
Dead - blowing mains fuse
for no reason. |
Check fuse holder for being
loose or charred. |
|
Ferguson |
TX10 |
Dead - blowning chopper
transistor. |
Chopper transistor s/c ,
R724 ( 1.2k ) o/c. |
|
Ferguson |
TX10 |
Dead - fuses & HT Ok -
no chopper drive. |
R722 ( 220R
) |
|
Ferguson |
TX10 |
Dead - intermittent. |
T702 ( int o/c ) no
44v A.C for start up to IC. |
|
Ferguson |
TX10 |
Dead - intermittent. |
Broken print near mains
transformer T710. |
|
Ferguson |
TX10 |
Dead - no 205/150/22/12V
rails. |
Broken print near mains
transformer T710 , R724 ( 1k2
) o/c. |
|
Ferguson |
TX10 |
Dead - occasional blowing
BU208. |
Use two mica washers
back-to-back. |
|
Ferguson |
TX10 |
Dead - T721 burnt up. |
D831 leaky. |
|
Ferguson |
TX10 |
Dead - transistor TR801
( BC547 ) leaky. |
Focus unit caused fault. |
|
Ferguson |
TX10 |
Dead. |
DA12. |
|
Ferguson |
TX10 |
Dispaly - bar graph display
at switch on. |
D1441 out of tolerance. |
|
Ferguson |
TX10 |
East west - no east west
correction. |
RV851/852 work , R864
( 8.2k ) high. |
|
Ferguson |
TX10 |
EHT but no raster. |
LED on CRT base. |
|
Ferguson |
TX10 |
FIELD BOUNCE ,
FIELD ROLL , LINE JITTER |
C35 1mfd ,
SL1432 if PREAMP |
|
Ferguson |
TX10 |
Field bounce at sw on |
TDA1044 |
|
Ferguson |
TX10 |
Field jitter. |
C777 ( 2 , 200u f ) |
|
Ferguson |
TX10 |
Field o/p chip replacement
TDA3254 for TDA3652 |
R771
changed from 6k8 to 3k3; |
|
Ferguson |
TX10 |
Flyback - lines - A1
control inoperative. |
R834 ( 1.8M ) o/c. |
|
Ferguson |
TX10 |
Flyback - lines - on AV
channel. |
R786 ( 470R )
o/c. |
|
Ferguson |
TX10 |
Flyback - lines - white
screen - 205v rail lo |
C726 ( 22u f ) o/c
205v rail low. |
|
Ferguson |
TX10 |
Flyback - lines at top
1" of scan. |
C776 o/c. |
|
Ferguson |
TX10 |
Flyback - lines at top
2" |
R774 ( 620R )
o/c , D771 s/c. |
|
Ferguson |
TX10 |
Flyback - lines on AV
channel only. |
R786 ( 470R )
o/c. |
|
Ferguson |
TX10 |
Flyback - white screen with
flyback lines. |
C726 ( 22u f ) o/c
205v rail low. |
|
Ferguson |
TX10 |
Frame - lines at top of
picture. |
Shorted turns in scan
coils. |
|
Ferguson |
TX10 |
Frame - picture blanked out
bottom 3/4. |
TR771 s/c , R786 o/c. |
|
Ferguson |
TX10 |
Frame - poor interlace in
centre of screen. |
C776 o/c. |
|
Ferguson |
TX10 |
Frame - vertical control up
one end. |
Change R788 from 180k to
220k. |
|
Ferguson |
TX10 |
Frame - verticals bending
at top. |
Change C755 from 22n to
10n. |
|
Ferguson |
TX10 |
Frame bounce - sync jitter
only when cold. |
C35 ( 1u f ) feed
to SL1432 IF pre-amp chip |
|
Ferguson |
TX10 |
Frame collapse in between
tripping. |
DJ on earth connection of
LOPTX |
|
Ferguson |
TX10 |
Frame collapse or foldover. |
C775 , SP6 ceramic. |
|
Ferguson |
TX10 |
Frame cramp at top. |
Check for break in print
from pin 8 of frame IC. |
|
Ferguson |
TX10 |
Frame cramping bottom &
rolls after while. |
C782 leaky. |
|
Ferguson |
TX10 |
Frame cramping with frame
foldover at top. |
C773 o/c. |
|
Ferguson |
TX10 |
Frame flagging on video. |
R756 changed to 6.8k. |
|
Ferguson |
TX10 |
Frame fold over. |
C781 ( 100u f 35v ) |
|
Ferguson |
TX10 |
Frame instability. |
Fit a 240pf between pins 4
& 5 of IC772. Fit 390p @ C778 |
|
Ferguson |
TX10 |
Frame reduced - foldover or
collapse. |
C775 , SP6 ceramic. |
|
Ferguson |
TX10 |
Frame roll - tripping -
wavy vertical lines |
R813 ( 121k ) high. |
|
Ferguson |
TX10 |
Frame roll & tripping -
intermittent. |
Tracking between FB721
& core of chopper TX. |
|
Ferguson |
TX10 |
Frame roll & tripping. |
Ferrite bead FB721 arcing
resolder clear of PCB. |
|
Ferguson |
TX10 |
Frame roll. |
R813 critical value. |
|
Ferguson |
TX10 |
Frame rolls while &
cramping at bottom. |
Cy.2 leaky. |
|
Ferguson |
TX10 |
Grey scale - shifting. |
12v reg IC621. |
|
Ferguson |
TX10 |
Grey scale fault TDA3560. |
Check C616/7/8
( 100nf ) |
|
Ferguson |
TX10 |
Heaters - intermittent. |
Drys on supply pins. |
|
Ferguson |
TX10 |
Horizontal lines across
screen. |
C776 ( 100nf ) o/c.
see black horz. |
|
Ferguson |
TX10 |
Hum & dark pic |
dry joints RGB o/p tr |
|
Ferguson |
TX10 |
Int dark lines on picture. |
Focus control. |
|
Ferguson |
TX10 |
Int operation of remote
control functions. |
Ser HT preset , R813 ( 121k
) , Drys LOPT , Drys remote
PCB , mains switch. |
|
Ferguson |
TX10 |
Interlace poor in centre of
screen. |
C776 o/c. |
|
Ferguson |
TX10 |
Lack of height. |
C781 ( 100u f ) ,
TR771 ( ZTX450K ) |
|
Ferguson |
TX10 |
LEDs on -
bass/treble/balance permantly. |
IC1443. |
|
Ferguson |
TX10 |
Line - castellation &
lack of width , tripping. |
D831 ( BY188Bor BY226 ) o/c. |
|
Ferguson |
TX10 |
Line - cramping - vertical
lines on LH side |
R.G.B leads to CRT base too
close to LOPTX. |
|
Ferguson |
TX10 |
Line - hunting - tripping
after 1 min. |
D831. |
|
Ferguson |
TX10 |
Line - ringing. |
D831 o/c. |
|
Ferguson |
TX10 |
Line - tearing
( slight ) - hum/flashing. |
150v rail min setting R813
( 121R )
goes low. |
|
Ferguson |
TX10 |
Line - tearing. |
T721 in LTB. |
|
Ferguson |
TX10 |
Lines ( dark ) at
top of picture. |
R16 ( 680R ) |
|
Ferguson |
TX10 |
Loss of 1 or more colours. |
IC601 ( TDA3560 ) |
|
Ferguson |
TX10 |
Low frequency hum varying
with video content. |
2 video o/p transistors
leaky. |
|
Ferguson |
TX10 |
Memory - loss of tuning
memory at switch on. |
D345 leaky ,
gunge on PCB around neg pin of B341. |
|
Ferguson |
TX10 |
Memory - no memory on
channel 1. |
Memory battery
( checks ok ) can use pen cell type. |
|
Ferguson |
TX10 |
Memory - not storing. |
Change C367 from 470p to
560p. |
|
Ferguson |
TX10 |
No A1 volts after LOP
transistor change. |
Poor contact on collector
screw. |
|
Ferguson |
TX10 |
No blue in text mode. |
Change colour decoder IC
TDA3560. |
|
Ferguson |
TX10 |
No channel display No. line
or video. |
DJ on IC621. |
|
Ferguson |
TX10 |
No CRT heaters - sound ok. |
C759 blown up , D738 , D735
s/c caused by C758 ( 33uf ) |
|
Ferguson |
TX10 |
No FF/Rew search used with
3V43. |
Replace IC1086 to 066 |
|
Ferguson |
TX10 |
No field sync |
TDA2576A |
|
Ferguson |
TX10 |
No frame. |
C777 ( 100u f ) |
|
Ferguson |
TX10 |
No heaters |
Moving chassis may restore
, dry-joint on transformer T705 |
|
Ferguson |
TX10 |
No heaters - sound &
EHT ok. |
C759 blown up , D738 , D735
s/c caused by C758 ( 33uf ) |
|
Ferguson |
TX10 |
No line - channel display
No or video. |
DJ on IC621. |
|
Ferguson |
TX10 |
No line or channel display
- intermittent. |
DJ on IC621. |
|
Ferguson |
TX10 |
No pic |
When A1 advanced field
collapse noticed - TDA3652 chip faulty |
|
Ferguson |
TX10 |
No picture - no heaters. |
Drys on or around chopper/EHT
transformer T705. |
|
Ferguson |
TX10 |
No Picture - sound &
EHT Ok. |
R832 ( 150k )
o/c , D831 ( green ) at
back , R834 next to A1 control. |
|
Ferguson |
TX10 |
No picture - sound ok. |
D657 ( GL4850 )
LED , TR651/2/4/5. |
|
Ferguson |
TX10 |
No picture & tripping
with sound hum. |
D702 low res
( 15r ) . |
|
Ferguson |
TX10 |
No raster - intermittent. |
Check first anode preset
slider control arcing to ground |
|
Ferguson |
TX10 |
No signal & sound mute
- intermittent. |
C22 ( 330pf ) |
|
Ferguson |
TX10 |
No sound & EHT -
intermittent. |
Drys on IC621
( hair line crack ) around
pin 2. |
|
Ferguson |
TX10 |
No sound. |
R243 or R1243 4.7R
o/c. |
|
Ferguson |
TX10 |
No startup from remote or
normalize on/off. |
TR410 BC237B )
leaky. |
|
Ferguson |
TX10 |
No Teletext. |
Change R1131 to 47k. |
|
Ferguson |
TX10 |
No Teletext. |
IC1033 ( SAA5030 ) due
to focus control flash over. |
|
Ferguson |
TX10 |
NO TEXT ,
JUST SLIGHT SHIFT TO LEFT , OK
ON MIX |
CHECK PL31s EXTRA GREY LEAD |
|
Ferguson |
TX10 |
Non-linear scan. |
T721 in LTB. |
|
Ferguson |
TX10 |
Normalize on/off. |
TR410 BC237B )
leaky. |
|
Ferguson |
TX10 |
Over bright raster/flyback
lines - A1 u/s. |
Low HT on CRT PCB should be
205v - low due to C726 ( 22u f ) |
|
Ferguson |
TX10 |
Picture - lacks lustre. |
12v reg IC621. |
|
Ferguson |
TX10 |
Picture darkens after a
time. |
LED on CRT base , Drys CRT
base , Heater leads. |
|
Ferguson |
TX10 |
Picture fades out. |
Heater wrap-round
connectors. |
|
Ferguson |
TX10 |
Picture fades to severe
noise patterning. |
IC50 SL1430 or SL1432
( fit 220k from pin 1 to chassis ) |
|
Ferguson |
TX10 |
Picture moved 4" to
right. |
R613 ( 10R
) high. |
|
Ferguson |
TX10 |
Poor frame sync - may also
have black band. |
IC TDA2576A. |
|
Ferguson |
TX10 |
Poor line sync. |
IC TDA2576A. |
|
Ferguson |
TX10 |
Poor remote control
operation. |
R503/5 to 680R
, relocate infra red pre-amp behind lens |
|
Ferguson |
TX10 |
Purity bad. |
Dry joints on thermister. |
|
Ferguson |
TX10 |
Random dot pattern. |
Add a 470pf capacitor
across D67/L101. |
|
Ferguson |
TX10 |
Raster - Blue. |
TR651 on CRT base. |
|
Ferguson |
TX10 |
Raster - Green. |
TR652/3 on CRT base. |
|
Ferguson |
TX10 |
Raster - Red. |
TR652/3 on CRT base. |
|
Ferguson |
TX10 |
Raster - shading. |
Change C658 from 1n to 10n. |
|
Ferguson |
TX10 |
Raster - White - then
tripping - sound ok. |
C655 ( 470u f ) s/c. |
|
Ferguson |
TX10 |
Remote control -
intermittent. |
Re-locate infra red pre-amp
behind lens. |
|
Ferguson |
TX10 |
Remote control has random
operations. |
Cracked print around PL16/1 |
|
Ferguson |
TX10 |
Remote control has reduced
range. |
Change all 3 LEDs ,
I/R preamp panel screening. |
|
Ferguson |
TX10 |
Repeated failure of TR701
in PSU. |
R724 ( 1.2k ) |
|
Ferguson |
TX10 |
Screeching from scan coils
- blowing TR831. |
T721 in LTB. |
|
Ferguson |
TX10 |
Setting up E.H.T.control
RZ13 |
Make sure TZ07/8 are BC548B
not A. |
|
Ferguson |
TX10 |
Shutdown - after a few
seconds. |
TR801 , D802. |
|
Ferguson |
TX10 |
Shutdown - after width
reducing & tripping. |
D831 o/c. |
|
Ferguson |
TX10 |
Shutdown - tripping. |
R810 ( 150k ) o/c. |
|
Ferguson |
TX10 |
Sideways jitter on video
playback. |
No AV switching TR113
( BC237 ) B/E o/c or
D117 o/c. |
|
Ferguson |
TX10 |
Sound - buzz
( 300-600hz ) on LH channel. |
C1450 ( 1ouf ) missing. |
|
Ferguson |
TX10 |
Sound - buzz on sound with
stereo VHS. |
Tabs in contact with metal
chassis. |
|
Ferguson |
TX10 |
Sound - buzz on sound. |
Screening foil not earthed
on stereo panel. |
|
Ferguson |
TX10 |
Sound - buzz on sound. |
PL9 ( tone ) pin 1
& 2 reversed , TR651/2/4/5 on CRT base. |
|
Ferguson |
TX10 |
Sound - caption buzz. |
Adj L531
( later L561 ) |
|
Ferguson |
TX10 |
Sound - crackling with
volume turned down |
IC621 ( LM340T ) 12v
reg. |
|
Ferguson |
TX10 |
Sound - distorted - at low
volume. |
Change C1264 from 22u f to
1000u f. |
|
Ferguson |
TX10 |
Sound - distorted - IC hot. |
C570 ( 100n ) or
C571 ( 100n )
o/c. |
|
Ferguson |
TX10 |
Sound - EHT & tuning -
intermittent. |
Dry joints/break in print
on IC621. |
|
Ferguson |
TX10 |
Sound - faults -
intermittent. |
Dry-joints around T705 |
|
Ferguson |
TX10 |
Sound - high pitched buzz
on AV channel. |
All 6103 in stock same
fault. |
|
Ferguson |
TX10 |
Sound - hum - no picture
& tripping. |
D702 low res
( 15r ) . |
|
Ferguson |
TX10 |
Sound - hum on sound - may
be intermittent. |
DJ on 12v reg on IF panel. |
|
Ferguson |
TX10 |
Sound - hum when connected
to stereo video. |
Refit aerial socket
( turn through 180 deg ) |
|
Ferguson |
TX10 |
Sound - hum. |
Drys on RGB transistors on
CRT base. |
|
Ferguson |
TX10 |
Sound - low on off air. |
IC561 ( TDA1236 ) ,
C582 ( 6n8 ) |
|
Ferguson |
TX10 |
Sound - mute -
intermittent. |
Add a 6k8 capacitor from
base to emitter of TR408. |
|
Ferguson |
TX10 |
Sound - mute & no
signal - intermittent. |
C22 ( 330pf ) |
|
Ferguson |
TX10 |
Sound - normalise volume
setting rises. |
Change D101 to silicon type
ie PH425. |
|
Ferguson |
TX10 |
Sound - off tune when loud
music is on. |
IL01 ( LM341 ) 12v
reg. |
|
Ferguson |
TX10 |
Sound - on vision
( 100hz ) |
Change C729 from 220n to
100n. |
|
Ferguson |
TX10 |
Sound - poor sound. |
Change C536 from 4n7 to
6n8. |
|
Ferguson |
TX10 |
Sound - poor tone control. |
Change C544 from 68n to
22n. |
|
Ferguson |
TX10 |
Sound - vision buzz. |
O/P TR654/5/6 on CRT base. |
|
Ferguson |
TX10 |
Sound - volume & colour
varies. |
DJ on pin 1 of LOPTX. |
|
Ferguson |
TX10 |
Sound - weak. |
12v reg IC621. |
|
Ferguson |
TX10 |
Sound hum - flashing with
slight line tearing |
150v rail min setting R813
( 121R ) goes low. |
|
Ferguson |
TX10 |
Sound on vis |
audio cable to spkrs
wrongly routed under chassis |
|
Ferguson |
TX10 |
Sound-hum low freq varying
with video content |
2 video o/p transistors
leaky. |
|
Ferguson |
TX10 |
Spooks effect. |
Poorly dressed video o/p
leads. |
|
Ferguson |
TX10 |
Standby - at switch on. |
C137 ( 470nf ) s/c. |
|
Ferguson |
TX10 |
Standby - coming out of
standby. |
Remove C406
( C106 ) print side
between pins 19/12. |
|
Ferguson |
TX10 |
Standby - faults -
intermittent. |
Dry-joints around T705 |
|
Ferguson |
TX10 |
Standby - going into
standby at switch on. |
C137 ( 470nf ) s/c. |
|
Ferguson |
TX10 |
Standby - going into
standby. |
DJ on pin 1 of LOPTX. |
|
Ferguson |
TX10 |
Standby - intermittent. |
Drys on T705. |
|
Ferguson |
TX10 |
Standby - light still on
after switch on. |
C6 ( 2u 2f ) |
|
Ferguson |
TX10 |
Striation on R/H side of
screen. |
C727 o/c. |
|
Ferguson |
TX10 |
Stuck in standby. |
R724 ( 1.2k ) |
|
Ferguson |
TX10 |
Switch's to s/by & out
but dead. |
R724 1.2k o/c , TR801
( BC547 ) 12v reg. |
|
Ferguson |
TX10 |
Sync - line oscillator
running at wrong speed |
R744 ( 30K1 ) high. |
|
Ferguson |
TX10 |
Sync - line speed
incorrect. |
R802 ( 5 6k ) high
or o/c. |
|
Ferguson |
TX10 |
Sync - loss of sync. |
Poor contact at pin 3 of
socket SK19A. |
|
Ferguson |
TX10 |
Sync - poor line lock at
switch on. |
Change C742
( 220u f ) , C745 ( 100u
f ) |
|
Ferguson |
TX10 |
Sync - poor line lock at
switch on. |
Change C742 from 220u f to
100u f &C745 from 100u f to 220u f |
|
Ferguson |
TX10 |
Sync - poor line sync &
low brightness. |
C749 ( 4n7 ) o/c. |
|
Ferguson |
TX10 |
Sync - poor line sync on
pre-recorded tapes. |
TR345 ( BC237 ) |
|
Ferguson |
TX10 |
Sync - poor sync after 1
hour. |
R601 high , IC33
( SAA5030 ) IC1033 |
|
Ferguson |
TX10 |
Teletext - interference
pattern on teletext. |
Change C415 from 100n to 1u
f. |
|
Ferguson |
TX10 |
Teletext lines at top of
picture on video ch. |
TR771 ( ZTX450K ) o/c. |
|
Ferguson |
TX10 |
Tripping |
CHECK L-O-TRANS AND LOPTY |
|
Ferguson |
TX10 |
Tripping - & frame
collapse in between trips |
DJ on earth connection of
LOPTX |
|
Ferguson |
TX10 |
Tripping - after 1 min -
line hunting. |
D831. |
|
Ferguson |
TX10 |
Tripping - after 10-20 mins. |
Fault caused by fitting
K526/5518T in TR831. |
|
Ferguson |
TX10 |
Tripping - comes on if
set-ht is reduced. |
C711 , C712. |
|
Ferguson |
TX10 |
Tripping - from cold &
chopper transistor hot |
R704 ( 27R , 1W )
gone high. |
|
Ferguson |
TX10 |
Tripping - hum - flashing
with line tear. |
150v rail min setting R813
( 121R )
goes low. |
|
Ferguson |
TX10 |
Tripping - intermittent. |
Insulation breakdown
between line OP transistor. |
|
Ferguson |
TX10 |
Tripping - intermittent. |
R813 critical value. |
|
Ferguson |
TX10 |
Tripping - most common
thing. |
TR831 ( BU208A ) ,
R613 ( 10ohm ) flat w/w |
|
Ferguson |
TX10 |
Tripping - on channel
change. |
D801 ( 6.2v zenor ) ,
R810 ( 150k )
o/c. |
|
Ferguson |
TX10 |
Tripping - on peak whites. |
Change R706 from 100k to
22k. |
|
Ferguson |
TX10 |
Tripping - replacement
LOPTx cures fault but only for a short while before it dies |
D831 BY255 was knocking out
loptx NOTE loptx is small tfmr - NOT
EHT tfmr |
|
Ferguson |
TX10 |
Tripping - resistor R722
getting hot. |
IC801. |
|
Ferguson |
TX10 |
Tripping - stops if
disconect scan coils. |
D832 test by replacment. |
|
Ferguson |
TX10 |
Tripping - stops when
disconect focus unit. |
DJ on earth CRT base. |
|
Ferguson |
TX10 |
Tripping - stops when PL4
is unplugged. |
T721 LOPTX has shorted
turns. |
|
Ferguson |
TX10 |
Tripping - then dead - no
205/150/22/12V Rail |
R724 ( 1k2 ) o/c ,
R613 ( 10R ) flat w/w 12volt Reg feed. |
|
Ferguson |
TX10 |
Tripping - wavy vertical
lines - field roll. |
R813 ( 121k ) high. |
|
Ferguson |
TX10 |
Tripping - width decreases. |
D831 ( B7188 ) high. |
|
Ferguson |
TX10 |
Tripping - with field roll
- intermittent. |
Tracking between FB721
& core of chopper TX. |
|
Ferguson |
TX10 |
Tripping - with sound hum -
no picture. |
D702 low res
( 15r ) . |
|
Ferguson |
TX10 |
Tripping - with white
raster. |
C655 ( 470u f ) s/c. |
|
Ferguson |
TX10 |
Tripping esp at sw on |
focu |
