Fidelity
| 3128NF
| Int blows mains fuse at sw on
| change the degaussing thermistor to type 96209 as the original is designed for continental 220volt supplies
|
Fidelity
| C14M06
| Int field collapse
| D25 1N4002 pin 6 IC10 TDA3653 int o/c
|
Fidelity
| C59C27 K
| Thick black horizontal bars from cold.
| C574 ( 100u f , 40v ) next to frame IC.
|
Fidelity
| CTM2000R
| Loss of sync when heated
| C100 33µ 250v HT res cap (HT still measured ok at 119v)
|
Fidelity
| CTM2000T
| Tripping
| 10nf lop tuning cap burn up & BU508A lop tr leaky
|
Fidelity
| CTV140
| Dead - possible faint ticking heard
| Check pin 9 TDA4600 - if pulsing up/down check for s/c on chopper sec - D21 (BY299 or RGP30) often cause
|
Fidelity
| CTV140
| Dead aft 10 mins
| Line freq increases due to C31 2n7 u/s
|
Fidelity
| CTV140
| Excess brill with f/b lines
| Check R57 10R in dec chip supply & C100 4µ 350v in 160v RGB stage
|
Fidelity
| CTV1400
| Weak contrast
| R106 10k or 110k o/c- also check R113/111 100k if fitted
|
Fidelity
| CTV1405R
| Dead
| D21 BY299 s/c & loadsa dry joints in PSU
|
Fidelity
| CTV1405R
| Tuning erratic with buzz on sound
| AFT coil replaced
|
Fidelity
| CTV1406
| Dead
| HT = 130v at LOPtr - 0R68 safety res in series with line dr tr o/c & tr s/c
|
Fidelity
| CTV1406
| Drifts off tune
| isolation diode slider no.5 tuning preset leaky
|
Fidelity
| CTV140R
| Dead - chopper & LOPTr s/c
| On/Off sw been arcing & burnt
|
Fidelity
| CTV14R
| Signals int & no chan 3
| ML923 tuning chip & tuner
|
Fidelity
| CTV14S
| No sound
| No volts pin 14 TDA3190 - D25 dry joint
|
Fidelity
| CTV20T
| No sound
| No volts at pin 13 IC3 TDA8190 - R59 100k in series with vol cont hi res
|
Fidelity
| CTV3014F
| Dead - chopper tr BUZ91A s/c & 2A fuse o/c
| R4 270k o/c, TDA4605-3 replaced (use correct type)
|
Fidelity
| CTV3128NF
| Field collapse
| Check R614 fusible - if OK check R340 3M3 for o/c connected to pin 43 IC101 vid proc chip (under screening can)
|
Fidelity
| CTV3228
| Line collapse
| C620 0µ47 250v scan coupling cap o/c & check R711 3R3 on E-W pcb
|
Fidelity
| CTV3228
| Tuning appears same on each station
| Check IC302 memory chip for dry joints
|
Fidelity
| CTV3228NF
| Dead - fuse blown
| PTC thermistor int - when tapped resistance varies - replace with type 96209 30R version
|
Fidelity
| CTV3228NF
| Dead, pulsing
| LOPTr Q602 BU2525AF s/c due to R608 dry joints
|
Fidelity
| CTV3228NF
| Line Collapse
| R711 3R3 o/c, TDA8145 & C620 0µ47 250v o/c & check for dry joints
|
Fidelity
| CTV3228NF
| No pic - line collapse when it went off
| C620 0µ47 250v by scn coils plug o/c - maybe caused by dry joint - also check TDA8145 & R711 3R3 on e-w panel
|
Fidelity
| CTV3228NF
| No pic - sound ok
| R618 100k 1w hi res, C600 1µ 0µ47 250v leaky & C620 0µ47 250v low cap
|
Fidelity
| CTV920
| Dead apart from buzz & low HT volts
| C171 3300pf 2Kv burnt & split
|
Fidelity
| CTV920
| Low HT or no HT .HT may drop to 0v if line stage dissconnected and replaced by dummy load ( lamp ) .
| C169 1uF 50v OC , STK7348 may be OC .
|
Fidelity
| CTV920
| Poor cold start up
| XC169 1µ 50v
|
Fidelity
| F14
| Int start up
| Chopper BU508A dry joints & R84 15k 5w hi res
|
Fidelity
| F14
| No signals/search
| Check switches on back of set not stuck down
|
Fidelity
| LC169
| No sound/sync
| R109E - part of chain of 10 x 5k6 res o/c
|
Fidelity
| WSTV7028NF AK19
| Lack of width & striation on lh side
| C630 430nf 250v o/c in lop E/W mod area
|
Fidelity
| ZX1410
| Dead
| D21 SC BY299
|
Fidelity
| ZX1410
| POOR CONTRAST , CONTROL DOES VERY LITTLE
| C96 0.1uF 50v ( BETWEEN HEATSINK AND LOPT )
|
Fidelity
| ZX1410
| Weak contrast with no control
| C96 0µ1 50v in beam lim
|
Fidelity
| ZX1415
| Dead - BUT11A s/c.
| Replace IC8 ( UC3844N ) , check R110 , R115.
|
Fidelity
| ZX1415
| Dead - fuse Ok.
| Drys or broken print at TR4.
|
Fidelity
| ZX1415
| Int frame collapse
| D25 INT OC
|
Fidelity
| ZX1415
| No sound or raster - Ht Ok.
| TR5 ( BC558 )
|
Fidelity
| ZX1415
| Will not store channels.
| Select channel number with remote after pressing store button.
|
Fidelity
| ZX2000
| Channels - will not go to ch 3.
| IC ML923 tuning chip.
|
Fidelity
| ZX2000
| Dark picture.
| C412 ( 100pf ) leaky.
|
Fidelity
| ZX2000
| dead
| Pulsing 7v at ZD5 12v zener; R801 18k 8w o/c
|
Fidelity
| ZX2000
| Dead - blowing chopper transistor.
| R826 ( 39R ) goes high.
|
Fidelity
| ZX2000
| Dead - fuse's ok.
| Droper R801 ( 18k ) o/c , chopper transistor , D24 ( RGP15J )
|
Fidelity
| ZX2000
| Dead - tripping.
| IC TDA2581.
|
Fidelity
| ZX2000
| Frame - foldover & lack of height.
| C706.
|
Fidelity
| ZX2000
| Frame collapse.
| IC9 ( TDA1170S )
|
Fidelity
| ZX2000
| Intermittent no signals.
| Leak from R121 lower leg touching print.
|
Fidelity
| ZX2000
| No colour
| IC6 ( TDA1365 )
|
Fidelity
| ZX2000
| No pic - sound ok
| Ai volts low - 10n 2kv decoupler leaky
|
Fidelity
| ZX2000
| Striations & fback lines
| RGB supply cap 4µ7 350v o/c
|
Fidelity
| ZX2000
| Striations over screen.
| C903 ( 4u7f ) o/c.
|
Fidelity
| ZX2000
| Tripping - dead.
| IC TDA2581.
|
Fidelity
| ZX3000
| Alternate channels missing i.e all odd.
| IC1 ( M104B1 ) .
|
Fidelity
| ZX3000
| Blank raster.
| IC4 ( TDA8180 )
|
Fidelity
| ZX3000
| Blank raster.
| IC TDA3562A.
|
Fidelity
| ZX3000
| Blows chopper tr BU426A
| R91 270k to pin 4 of TDA4600 hi res. Also check TDA4600 chip, D9, R90, C93
|
Fidelity
| ZX3000
| Bright raster.
| IC TDA1365.
|
Fidelity
| ZX3000
| Channel - no change - no remote operation.
| Stereo balance switch leaky.
|
Fidelity
| ZX3000
| Channels - int manual channel change
| DJ on front panel switch.
|
Fidelity
| ZX3000
| Cogging -serrated verts- may be intermittent.
| C100 ( 33uf , 250v ) may read Ok.
|
Fidelity
| ZX3000
| Dead - 2amp fuse & BU508 blown.
| Bridge rectifierD19 leaky
|
Fidelity
| ZX3000
| Dead - blowing BU508.
| C91 ( 1u f )
|
Fidelity
| ZX3000
| Dead - F2 blown.
| BU208 , D9 , R90 , C93 ( the cause ) R91 goes high.
|
Fidelity
| ZX3000
| dead - whines at sw on
| low HT at lop tr. - tr leaky BU508A - C106 dry joint caused fault
|
Fidelity
| ZX3000
| Dead Tv section.
| IC TDA8180 timebase generator.
|
Fidelity
| ZX3000
| dead with cracks from lopt
| loptx faulty
|
Fidelity
| ZX3000
| Dead.
| D34 s/c , R828 o/c.
|
Fidelity
| ZX3000
| Dead.
| R84 ( 68R ) o/c , L2 o/c.
|
Fidelity
| ZX3000
| Dead.
| BU426 , BU500 s/c , 2R2 o/c , TDA4600 u/s , check 220uf , 305v o/c
|
Fidelity
| ZX3000
| Dead.
| TR3 ( BU508A ) chopper leaky , check TDA4600 & C93.
|
Fidelity
| ZX3000
| Display stuck on one number.
| IC1 ( M104B1 ) .
|
Fidelity
| ZX3000
| Excess blue
| Tr6 BC558 leaky
|
Fidelity
| ZX3000
| Excess Red
| 100k in red chan risen to 260k
|
Fidelity
| ZX3000
| FIELD JITTER FROM COLD
| TDA1170S IC4
|
Fidelity
| ZX3000
| FIELD ROLL
| PR9 220k PRESET OC OR R25 HIGH
|
Fidelity
| ZX3000
| FIELD STRETCHED
| C59 1000uF 14" 2200uF 20"
|
Fidelity
| ZX3000
| Frame - no frame hold.
| 12 volt regulator only giving 10.8v.
|
Fidelity
| ZX3000
| Frame - reduced.
| C91 ( 1u f ) , HT preset control.
|
Fidelity
| ZX3000
| Frame - rolling - may be intermittent.
| IC TDA8180 loose in its holder.
|
Fidelity
| ZX3000
| Frame collapse - sound Ok.
| IC TDA2270 IC4.
|
Fidelity
| ZX3000
| Frame collapse then blows LOP transistor.
| IC TDA2578A.
|
Fidelity
| ZX3000
| Goes Bright White / Red / Yellow & off int
| Dry joints CRT heaters on CRT base pcb
|
Fidelity
| ZX3000
| Grey raster.
| IC5 ( TEA1014 )
|
Fidelity
| ZX3000
| High Ht rail.
| C91 ( 1uf )
|
Fidelity
| ZX3000
| Line tearing.
| C100 ( 33u f , 250v ) HT reservoir cap.
|
Fidelity
| ZX3000
| No picture.
| IC TDA3562A check 10m A1 bleed resistor.
|
Fidelity
| ZX3000
| No sound.
| R59 100k in series with vol slider gone high 2meg?
|
Fidelity
| ZX3000
| No video - sound ok.
| IC ( TDA3562A ) , IC5 ( TEA1014 )
|
Fidelity
| ZX3000
| PIC TOO WIDE + VERTICAL BANDS ON SCREEN
| R101 DRY OR OC
|
Fidelity
| ZX3000
| POOR STARTING
| C89 100u 25v
|
Fidelity
| ZX3000
| Presets sensitive.
| L1 readjusted.
|
Fidelity
| ZX3000
| Pulsing/rolling on high brightness
| HT was set at 138v instead of 150v (22" version)
|
Fidelity
| ZX3000
| Remote inoperative - no channel change.
| Stereo balance switch leaky.
|
Fidelity
| ZX3000
| RINGING ON VERTICALS
| C100 33u 250v
|
Fidelity
| ZX3000
| Rolling.
| 220k preset frame control PR9 , R25 ( 470k ) goes high.
|
Fidelity
| ZX3000
| Sound - distorted when hot.
| IC TDA8190.
|
Fidelity
| ZX3000
| Sound - distorted.
| IC7 ( TDA3810 ) on audio board.
|
Fidelity
| ZX3000
| TAKES UP TO 1hr TO COME ON FAINT PULSES CAN BE HEARD
| R82 , 83 10k D7 OR C87 100uF 25v
|
Fidelity
| ZX3000
| Tripping - dead.
| D13 s/c.
|
Fidelity
| ZX3000
| Tripping - when changing channels.
| Change C818 to between 2n2 & 1n5.
|
Fidelity
| ZX3000
| Tuning - problems with tuning.
| Change C1 ( 100n ) checks ok on meter - off tuner unit.
|
Fidelity
| ZX3000
| TV DEAD NO LINE DRIVE
| TDA8180 US
|
Fidelity
| ZX4000
| Blank raster with flyback lines.
| IC3 ( TDA3330 )
|
Fidelity
| ZX4000
| Caption buzz with very low sound
| Adj I/c sound coil L5 to elliminate buzz, adj L4 vid det & L7 sound trap to elliminate patt
|
Fidelity
| ZX4000
| Channels - stuck on channel 1.
| IC ML923 selector IC , C221 ( 0.01uf ) leaky.
|
Fidelity
| ZX4000
| dead
| R110 2R2 o/c, BU508A s/c, due to R119 150k o/c also change R118 120k
|
Fidelity
| ZX4000
| dead
| HT at chopper - R120 330K o/c, C97 1µ leaky; D24 HT rect BY299 s/c
|
Fidelity
| ZX4000
| dead
| 1.6A fuse o/c; BU508 chopper tr s/c; R309 150k o/c; also replaced R311 120k
|
Fidelity
| ZX4000
| Dead - fuse F1 blown.
| C81 ( 150u f 385v ) s/c.
|
Fidelity
| ZX4000
| dead - tripping
| C122 10n dry joint & arcing. Blew BU508D lop tr
|
Fidelity
| ZX4000
| DEAD PIN 9 TDA4600 PULSING
| SHORT ON CHOPPER TX SECONDARY USUALLY D21
|
Fidelity
| ZX4000
| Dead.
| R98 o/c.
|
Fidelity
| ZX4000
| Dead.
| D21 ( BY299 ) s/c.
|
Fidelity
| ZX4000
| Dead.
| R84 ( 15k ) o/c , C87 ( 47uf or 100uf 250v ) low.
|
Fidelity
| ZX4000
| Dead.
| D21 ( BY299 ) s/c.
|
Fidelity
| ZX4000
| Distorted sound.
| Speaker.
|
Fidelity
| ZX4000
| Excess Green
| TDA3330
|
Fidelity
| ZX4000
| Excess red pic
| Judicious adj of A1 control cured it
|
Fidelity
| ZX4000
| Frame - cogging.
| C101 ( 100uf , 250v ) o/c.
|
Fidelity
| ZX4000
| Frame - verticals corrugated.
| C87 ( 100u f , 250v )
|
Fidelity
| ZX4000
| Hard to tune in stations.
| Slightly adjust L4 ( video detector coil )
|
Fidelity
| ZX4000
| Int fails to come on.
| R84 ( 15k 5w ) high , Drys on TR2 ( BU508A )
|
Fidelity
| ZX4000
| Int loss of picture - sound mutes.
| C31 ( 2.7nf )
|
Fidelity
| ZX4000
| Int relay trips releasing mains switch.
| C87 ( 100u f 250v )
|
Fidelity
| ZX4000
| int tuning/no sigs esp low freqs
| Tuning volts wont fall below 5.4v; R157 2M2 o/c
|
Fidelity
| ZX4000
| Intermittent picture.
| DJ on brightness control.
|
Fidelity
| ZX4000
| Lack of height.
| PR17 ( 220R ) high.
|
Fidelity
| ZX4000
| Lack of width.
| C87 ( 100u f 250v )
|
Fidelity
| ZX4000
| Memory - will not store channels.
| R514 should be 2.7k , R315-9 should be 1.8k see mag.
|
Fidelity
| ZX4000
| No colour
| IC3 ( TDA3330 )
|
Fidelity
| ZX4000
| No colour.
| Tuner!
|
Fidelity
| ZX4000
| No contrast.
| R113 ( 100k ) o/c , check R111 ( 100k ) &R106 ( 10k ) , cct shows 1 R106 ( 110k )
|
Fidelity
| ZX4000
| No frame.
| IC TDA3651.
|
Fidelity
| ZX4000
| No picture - no A1 supply.
| C201 s/c.
|
Fidelity
| ZX4000
| No visible raster - EHT & heaters Ok A1 at 12
| C201 ( 10nf 2Kv ) leaky on CRT base.
|
Fidelity
| ZX4000
| Not storing stations.
| Store button o/c may be int.
|
Fidelity
| ZX4000
| Peak white.
| IC3 faulty.
|
Fidelity
| ZX4000
| Picture break up with corrugated verticals.
| C87 ( 100u f 250v )
|
Fidelity
| ZX4000
| Picture rolling.
| Slightly adjust L4 ( video detector coil )
|
Fidelity
| ZX4000
| PICTURE TOO BRIGHT + FLYBACK LINES ON SCREEN
| TRY R57 10R OR C100 4u7 350v
|
Fidelity
| ZX4000
| Shutdown - no sound or picture after 10 mins
| C31 ( 2.7nf ) connected bt pin 23 of IC2 & chassis.
|
Fidelity
| ZX4000
| Sound intermittent.
| DJ on volume control.
|
Fidelity
| ZX4000
| Sound mutes - int no picture.
| C31 ( 2.7nf )
|
Fidelity
| ZX4000
| St/by only
| BUT56A chopper tr s/c, 1.6A fuse o/c - dry joints C28 yellow cap by lopt
|
Fidelity
| ZX4000
| Stuck on channel 1.
| C221 ( 10nf )
|
Fidelity
| ZX4000
| SWITCHES OFF INT
| 12v REG INT OC REPLACE LM317T
|
Fidelity
| ZX4000
| Tuner - drift.
| IC201 ( M490B1 or M490BB1 )
|
Fidelity
| ZX4000
| Tuner drift.
| IC1 ( SL1431 ) , ZD2 ( BZYC5V1 ) adj AFC coil after fitting.
|
Fidelity
| ZX4000
| Tuner drift.
| Slightly adjust L4 ( video detector coil )
|
Fidelity
| ZX4000
| Tuning - low gain.
| SWARF IF filter , Tuner.
|
Fidelity
| ZX4000
| Tuning - no tuning.
| Crack in print between TAA550 & pin 11 of SL470.
|
Fidelity
| ZX4000
| Tuning - will not store.
| IC TAA550 33v regulator goes leaky.
|
Fidelity
| ZX4000
| Tuning drift.
| IC SL471 , Tuner.
|
Fidelity
| ZX4000
| Tuning drifting.
| ZD1 ( TAA550 ) , IC201 ( M490 )
|
Fidelity
| ZX4000
| Tuning memory not storing if switched off.
| IC201 ( M490 )
|
Fidelity
| ZX4000
| Unable to tune in.
| SUF341 tuner.
|
Fidelity
| ZX4000
| White raster - bright.
| IC3 ( TDA3330 )
|
Fidelity
| ZX4000
| Wont store chans tho tunes ok
| ZD1 TAA550 leaky
|
Fidelity
| ZX41010
| Black bars across pic (4)
| C45 10µ 50v
|
Fidelity
| ZX4120
| Dead - int failure of R98 0R68 surge lim
| 16v supply too high - C87 100µ
|
Fidelity
| ZX4200
| Corrugated verticals.
| C87 ( 47uf )
|
Fidelity
| ZX4200
| Dead - with faint ticking.
| D21 ( BY229P ) s/c , may be due to LOPTX being faulty.
|
Fidelity
| ZX4200
| Field stretched at top, ragged verts & hum bar
| C87 47µ 200v
|
Fidelity
| ZX4200
| Int blowing BU508D TR5.
| C84 ( 2.2nf 2Kv )
|
Fidelity
| ZX4200
| Int cutting out.
| C87 ( 47uf ) leaky.
|
Fidelity
| ZX4200
| Lack of contrast.
| R111 ( 100k 1/2w ) RHS of LOPT.
|
Fidelity
| ZX4200
| Lack of width - HT low.
| C87 ( 47uf ) leaky.
|
Fidelity
| ZX4200
| No go - just1 Psst at switch on.
| C93 ( 1uf , 100v ) o/c by TDA4503 IC.
|
Fidelity
| ZX4200
| Small raster.
| Replace C111 with a 47uf 250v )
|
Fidelity
| ZX4200
| Switching off - Tuning drift.
| C87 ( 47u f 250v )
|
Fidelity
| ZX4200
| Tripping.
| TR5 ( BU508D ) s/c.
|
Fidelity
| ZX5000
| Blank raster with lines at top & noises
| C18 HT res cap 220µ 250v
|
Fidelity
| ZX5000
| dead
| BUT56A chopper tr s/c, C28 10n burnt leg, C5 4µ7 replaced, C18 100µ 250v o/c
|
Fidelity
| ZX5000
| Dead - Chopper tr BUT11A s/c
| Replace C5 4µ7 63v, C7 220µ 25v, IC1 UC3844N, IC13 CNY75B opto
|
Fidelity
| ZX5000
| Dead BUT56A s/c.
| R120 ( 3.3ohm ) o/c , R115 ( 0.68ohm ) , C5 ( 4.7uf ) , IC13 ( UC3844 )
|
Fidelity
| ZX5000
| Dead.
| HT low at 30v , C18 ( 100uf 250v )
|
Fidelity
| ZX5000
| NO GREEN AND NO COLOUR UNLESS BRIGHTNESS TURNED UP
| VCU2213 US
|
