| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | NP83 | Channels - no channel change & blank raster. | Q1454 ( cita Pcb ) | 14-09-04 |
| Hitachi | NP83 | FIELD COLLAPSE FIELD SQUARE WAVE PRESENT AT PIN 4 | C610 220uF 50v | 14-09-04 |
|
|
| Hitachi | NP83 | No sound. | R462 ( 22R ) o/c. | 14-09-04 |
| Hitachi | NP83 | Standby - stuck in standby mode. | R1437 ( 820R ) o/c change to 1w type. | 14-09-04 |
| Hitachi | NP83CGMk2 | Pic pulls to right & int field roll | Try s/c vid in & out conns on txt pcb - if ok fault on txt pcb | 14-09-04 |
| Hitachi | NP83CQ | Bright on LH side of raster | C715 2µ2 250v o/c | 14-09-04 |
| Hitachi | NP83CQ | Channels - no channel change & no raster. | Q1454 ( cita Pcb ) | 14-09-04 |
| Hitachi | NP83CQ | dead | 2A fuse blackened, STR6020 s/c, Loptx s/c windings, 2 x 1R safety re o/c (no 12v or 30v) & TDA3651 field chip u/s | 14-09-04 |
| Hitachi | NP83CQ | dead | won't work on dummy load unless loptx removed - loptx faulty | 14-09-04 |
| Hitachi | NP83CQ | dead | STR6020 s/c; R715 2R2 o/c; 2A fuse o/c; R901 6R 6w o/c; TDA3651 u/s | 14-09-04 |
| Hitachi | NP83CQ | Dead with "1" in display | No B+ volts until loptx removed (130v) - new loptx cured it & HT normal at 110v | 14-09-04 |
| Hitachi | NP83CQ | Field bounce - top inch of pic int disappears | C613 100n across field scan coils | 14-09-04 |
| Hitachi | NP83CQ | FIELD COLLAPSE OR FIELD FLUTTER | C603 1uF TANTALUM | 14-09-04 |
| Hitachi | NP83CQ | Frame - foldover after 10 mins. | C613 ( 100u f ) o/c. | 14-09-04 |
| Hitachi | NP83CQ | Height reduces on warm up | TDA3651A field chip u/s | 14-09-04 |
| Hitachi | NP83CQ | Int/crackly sound | tone control under front flap noisy | 14-09-04 |
| Hitachi | NP83CQ | No cold start | C908 33µ | 14-09-04 |
| Hitachi | NP83CQ | No pic just vert lines | same with txt pcb removed - TDA3561A decoder chip u/s | 14-09-04 |
| Hitachi | NP83CQ | NO PICTURE OR SOUND PSU & Line ok | 12v RAIL LOW R716 OC OR HIGH 2R | 14-09-04 |
| Hitachi | NP83CQ | No raster - sound ok | No lum from IC501, sandcastle pulse low; R720/721 1M hi res | 14-09-04 |
| Hitachi | NP83CQ | No raster - sound ok. | R720 , R721 ( 3.9k ) gone high. | 14-09-04 |
| Hitachi | NP83CQ | No raster & no channel change. | Q1454 ( cita Pcb ) | 14-09-04 |
|
|
| Hitachi | NP83CQ | NO S/V , IN AV MODE | ZD1438 12v ZENER | 14-09-04 |
| Hitachi | NP83CQ | Pic made up of large white dots | IC501 TDA3561A | 14-09-04 |
| Hitachi | NP83CQ | Red raster & white hor lines on txt | TDA3561A u/s | 14-09-04 |
| Hitachi | NP83CQ | Trips into st/by | ok on dummy load - Loptx Pt no 2433752 | 14-09-04 |
| Hitachi | NP83CQ | Weak contrast, no col - sound ok, controls have no effect | IC501 TDA2561A | 14-09-04 |
| Hitachi | NP83CQ | WORKS FOR 2mins THEN CHANNEL DISPLAY GOES OUT , PI | NO 5v PIN 20 MAB8422 5v REG OR BRIDGE RECTIFIER ON CITAC PANEL | 14-09-04 |
| Hitachi | NP84 | Stuck in standby. | DRYS ON CHOPPER TX | 14-09-04 |
| Hitachi | NP84CQ | Bright vertical line. | Zener ZD702 ( 10v , 500mW ) leaky. | 14-09-04 |