| Make | Model | Problem | Solution | Date |
| | | |
| Found: 206
|
| Fidelity | ZX3000 | Remote inoperative - no channel change. | Stereo balance switch leaky. | 14-09-04 |
| Fidelity | ZX3000 | RINGING ON VERTICALS | C100 33u 250v | 14-09-04 |
| Fidelity | ZX3000 | Rolling. | 220k preset frame control PR9 , R25 ( 470k ) goes high. | 14-09-04 |
| Fidelity | ZX3000 | Sound - distorted when hot. | IC TDA8190. | 14-09-04 |
| Fidelity | ZX3000 | Sound - distorted. | IC7 ( TDA3810 ) on audio board. | 14-09-04 |
| Fidelity | ZX3000 | TAKES UP TO 1hr TO COME ON FAINT PULSES CAN BE HEARD | R82 , 83 10k D7 OR C87 100uF 25v | 14-09-04 |
| Fidelity | ZX3000 | Tripping - dead. | D13 s/c. | 14-09-04 |
| Fidelity | ZX3000 | Tripping - when changing channels. | Change C818 to between 2n2 & 1n5. | 14-09-04 |
| Fidelity | ZX3000 | Tuning - problems with tuning. | Change C1 ( 100n ) checks ok on meter - off tuner unit. | 14-09-04 |
| Fidelity | ZX3000 | TV DEAD NO LINE DRIVE | TDA8180 US | 14-09-04 |
|
|
| Fidelity | ZX4000 | Blank raster with flyback lines. | IC3 ( TDA3330 ) | 14-09-04 |
| 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 | 14-09-04 |
| Fidelity | ZX4000 | Channels - stuck on channel 1. | IC ML923 selector IC , C221 ( 0.01uf ) leaky. | 14-09-04 |
| Fidelity | ZX4000 | dead | R110 2R2 o/c, BU508A s/c, due to R119 150k o/c also change R118 120k | 14-09-04 |
| Fidelity | ZX4000 | dead | HT at chopper - R120 330K o/c, C97 1µ leaky; D24 HT rect BY299 s/c | 14-09-04 |
| Fidelity | ZX4000 | dead | 1.6A fuse o/c; BU508 chopper tr s/c; R309 150k o/c; also replaced R311 120k | 14-09-04 |
| Fidelity | ZX4000 | Dead - fuse F1 blown. | C81 ( 150u f 385v ) s/c. | 14-09-04 |
| Fidelity | ZX4000 | dead - tripping | C122 10n dry joint & arcing. Blew BU508D lop tr | 14-09-04 |
| Fidelity | ZX4000 | DEAD PIN 9 TDA4600 PULSING | SHORT ON CHOPPER TX SECONDARY USUALLY D21 | 14-09-04 |
| Fidelity | ZX4000 | Dead. | R98 o/c. | 14-09-04 |
| Fidelity | ZX4000 | Dead. | D21 ( BY299 ) s/c. | 14-09-04 |
| Fidelity | ZX4000 | Dead. | R84 ( 15k ) o/c , C87 ( 47uf or 100uf 250v ) low. | 14-09-04 |
| Fidelity | ZX4000 | Dead. | D21 ( BY299 ) s/c. | 14-09-04 |
| Fidelity | ZX4000 | Distorted sound. | Speaker. | 14-09-04 |
| Fidelity | ZX4000 | Excess Green | TDA3330 | 14-09-04 |
| Fidelity | ZX4000 | Excess red pic | Judicious adj of A1 control cured it | 14-09-04 |
| Fidelity | ZX4000 | Frame - cogging. | C101 ( 100uf , 250v ) o/c. | 14-09-04 |
| Fidelity | ZX4000 | Frame - verticals corrugated. | C87 ( 100u f , 250v ) | 14-09-04 |
| Fidelity | ZX4000 | Hard to tune in stations. | Slightly adjust L4 ( video detector coil ) | 14-09-04 |
| Fidelity | ZX4000 | Int fails to come on. | R84 ( 15k 5w ) high , Drys on TR2 ( BU508A ) | 14-09-04 |