| Make | Model | Problem | Solution | Date |
| | | |
| Found: 206
|
| Fidelity | ZX4000 | Int loss of picture - sound mutes. | C31 ( 2.7nf ) | 14-09-04 |
| Fidelity | ZX4000 | Int relay trips releasing mains switch. | C87 ( 100u f 250v ) | 14-09-04 |
| Fidelity | ZX4000 | int tuning/no sigs esp low freqs | Tuning volts wont fall below 5.4v; R157 2M2 o/c | 14-09-04 |
| Fidelity | ZX4000 | Intermittent picture. | DJ on brightness control. | 14-09-04 |
| Fidelity | ZX4000 | Lack of height. | PR17 ( 220R ) high. | 14-09-04 |
| Fidelity | ZX4000 | Lack of width. | C87 ( 100u f 250v ) | 14-09-04 |
| Fidelity | ZX4000 | Memory - will not store channels. | R514 should be 2.7k , R315-9 should be 1.8k see mag. | 14-09-04 |
| Fidelity | ZX4000 | No colour | IC3 ( TDA3330 ) | 14-09-04 |
| Fidelity | ZX4000 | No colour. | Tuner! | 14-09-04 |
| Fidelity | ZX4000 | No contrast. | R113 ( 100k ) o/c , check R111 ( 100k ) &R106 ( 10k ) , cct shows 1 R106 ( 110k ) | 14-09-04 |
|
|
| Fidelity | ZX4000 | No frame. | IC TDA3651. | 14-09-04 |
| Fidelity | ZX4000 | No picture - no A1 supply. | C201 s/c. | 14-09-04 |
| Fidelity | ZX4000 | No visible raster - EHT & heaters Ok A1 at 12 | C201 ( 10nf 2Kv ) leaky on CRT base. | 14-09-04 |
| Fidelity | ZX4000 | Not storing stations. | Store button o/c may be int. | 14-09-04 |
| Fidelity | ZX4000 | Peak white. | IC3 faulty. | 14-09-04 |
| Fidelity | ZX4000 | Picture break up with corrugated verticals. | C87 ( 100u f 250v ) | 14-09-04 |
| Fidelity | ZX4000 | Picture rolling. | Slightly adjust L4 ( video detector coil ) | 14-09-04 |
| Fidelity | ZX4000 | PICTURE TOO BRIGHT + FLYBACK LINES ON SCREEN | TRY R57 10R OR C100 4u7 350v | 14-09-04 |
| Fidelity | ZX4000 | Shutdown - no sound or picture after 10 mins | C31 ( 2.7nf ) connected bt pin 23 of IC2 & chassis. | 14-09-04 |
| Fidelity | ZX4000 | Sound intermittent. | DJ on volume control. | 14-09-04 |
| Fidelity | ZX4000 | Sound mutes - int no picture. | C31 ( 2.7nf ) | 14-09-04 |
| Fidelity | ZX4000 | St/by only | BUT56A chopper tr s/c, 1.6A fuse o/c - dry joints C28 yellow cap by lopt | 14-09-04 |
| Fidelity | ZX4000 | Stuck on channel 1. | C221 ( 10nf ) | 14-09-04 |
| Fidelity | ZX4000 | SWITCHES OFF INT | 12v REG INT OC REPLACE LM317T | 14-09-04 |
| Fidelity | ZX4000 | Tuner - drift. | IC201 ( M490B1 or M490BB1 ) | 14-09-04 |
| Fidelity | ZX4000 | Tuner drift. | IC1 ( SL1431 ) , ZD2 ( BZYC5V1 ) adj AFC coil after fitting. | 14-09-04 |
| Fidelity | ZX4000 | Tuner drift. | Slightly adjust L4 ( video detector coil ) | 14-09-04 |
| Fidelity | ZX4000 | Tuning - low gain. | SWARF IF filter , Tuner. | 14-09-04 |
| Fidelity | ZX4000 | Tuning - no tuning. | Crack in print between TAA550 & pin 11 of SL470. | 14-09-04 |
| Fidelity | ZX4000 | Tuning - will not store. | IC TAA550 33v regulator goes leaky. | 14-09-04 |