| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | NP84CQ | Channels - screen flashes red , green or blue. | IC501 ( TDA3562A ) reduce R726 to 560R R610 to 8.2k. | 14-09-04 |
| Hitachi | NP84CQ | Dead | R710 OR R713 OC IN LINE DRIVER STAGE | 14-09-04 |
| Hitachi | NP84CQ | Dead | CHECK Q703 , Q702 , Q903 & LOPTY | 14-09-04 |
| Hitachi | NP84CQ | dead | F901 1.6A fuse o/c - no other ff | 14-09-04 |
| Hitachi | NP84CQ | Dead - blown. | Uprate fuse from 1.25a to 1.6amp. | 14-09-04 |
| Hitachi | NP84CQ | dead - ht fuse o/c | when replaced squeals if sw held in - whisker of wire on lopt pin s/c supply | 14-09-04 |
| Hitachi | NP84CQ | Dead - shows "1" in display | Q902 BU806; ZD901BZW03C36; Q1455 BC548B | 14-09-04 |
| Hitachi | NP84CQ | dead - trips once at sw on | HT high at 150v (100v); Q902 BU806 leaky; ZD901 BZW03C36 s/c | 14-09-04 |
| Hitachi | NP84CQ | dead - whines only | ok on dummy load - Loptx Pt no 2434141 | 14-09-04 |
| Hitachi | NP84CQ | Dead StBy LED & channel indicators ok | Check Q1455 ( BC548 ) | 14-09-04 |
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|
| Hitachi | NP84CQ | Dead. | R710 ( 2.7k ) , R713 ( 2.2k ) , | 14-09-04 |
| Hitachi | NP84CQ | excess ht & rolling | R908 22k in error sensing network hi res | 14-09-04 |
| Hitachi | NP84CQ | Field bounce/roll | C603 47µ 160v u/s | 14-09-04 |
| Hitachi | NP84CQ | field collapse | C603 47µ 160v scan coupling cap | 14-09-04 |
| Hitachi | NP84CQ | Frame - memory not storing. | IC201 ( ZTK33B ) | 14-09-04 |
| Hitachi | NP84CQ | Int col | TDA3565 dry joints | 14-09-04 |
| Hitachi | NP84CQ | Int goes into st/by & Ch+/Ch- buttons on tv won't operate correctly | Reprog micro as per instructions | 14-09-04 |
| Hitachi | NP84CQ | Int st/by & chan change no's | No 12v to remote pcb etc. R714 1R fusible in series with pin 2 loptx | 14-09-04 |
| Hitachi | NP84CQ | No col | Replace TDA3565 & adj ref osc | 14-09-04 |
| Hitachi | NP84CQ | No col | Pin 11 IC501 low - C511 2µ2 50v brightness pot decoupler | 14-09-04 |
| Hitachi | NP84CQ | No colour - int. | C507 ( 2.2u f ) , IC TDA3562A. | 14-09-04 |
| Hitachi | NP84CQ | No frame or sound. | R714 ( 1R ) o/c. | 14-09-04 |
| Hitachi | NP84CQ | No sigs - just snow | No 12v to tuner - crack in print by R222 AGC control | 14-09-04 |
| Hitachi | NP84CQ | NO SOUND | TDA4503 | 14-09-04 |
| Hitachi | NP84CQ | Partial field collapse | C603 47µ 150v in field o/p cct | 14-09-04 |
| Hitachi | NP84CQ | Stuck in standby. | R908 22k HIGH | 14-09-04 |
| Hitachi | NP84CQ | Stuck in standby. | 1.6a fuse on L/H side main PCB. | 14-09-04 |
| Hitachi | NP84CQ | The picture would roll. EHT trip thyristor operati | R908 in the regulator circuit had risen in value from 22k .The fault could also occur with Models CPT1444 and CPT1446. | 14-09-04 |
| Hitachi | NP84CQ | Top of the picture blanked out | C905 o/c 100mfd 200v (next to tuner) | 14-09-04 |
| Hitachi | NP84CQ/2 | Channel display no other functions | Replace Q902 | 14-09-04 |