| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | NP6C | Startup - no startup. | R733 o/c.C910 startup con. | 14-09-04 |
| Hitachi | NP6C | Sync - Line frequency varies. | TR702. | 14-09-04 |
| Hitachi | NP80 | FIELD COLLAPSE | D601 ON PIN 9 IC701 S/C | 14-09-04 |
| Hitachi | NP81 | Frame - bounce on ch change or picture change | C610 ( 220u f 50v ) | 14-09-04 |
| Hitachi | NP81 | NO PICTURE , POWER SUPPLY SCREAMING , LINE TEARING A | C906 O.C. 220mfd , 400v | 14-09-04 |
| Hitachi | NP81 | POOR FIELD LIN | C614 2u2 TANTALUM | 14-09-04 |
| Hitachi | NP81 | TB700 P.SUPP TRANSISTORS S.C. RB713 o/c | REPLACE ALONG WITH C712 C726 94.7uF ) | 14-09-04 |
| Hitachi | NP81CQ | Blanking fault. | C715 ( 4.7u f 250v ) | 14-09-04 |
| Hitachi | NP81CQ | Bright pic on lh side | C715 4µ 250v - HT smoother to rgb o/p stages | 14-09-04 |
| Hitachi | NP81CQ | Bright white screen | Check V at K2 on CRT base if low replace C715 ( 4.7uF ) | 14-09-04 |
|
|
| Hitachi | NP81CQ | Dark pic 1st Anode low 200V | C714 ( 0.068uF ) 1KV o/c | 14-09-04 |
| Hitachi | NP81CQ | dead | Mains fuse o/c; pin 6 chopper tfmr burnt, STK411, Q901 2SD787; R904 82K hi res, D901 2v7 zener s/c, D902 33v zener o/c, lop tr s/c, TDA1035S sound chip u/s | 14-09-04 |
| Hitachi | NP81CQ | Dead. | R905 ( 56R 3w ) o/c , R906 ( 82R 2w ) o/c. | 14-09-04 |
| Hitachi | NP81CQ | Field bounce esp on chan change & hi contrast | C601 220µ 50v u/s | 14-09-04 |
| Hitachi | NP81CQ | Flyback lines on picture. | C715 ( 4.7u f 250v ) | 14-09-04 |
| Hitachi | NP81CQ | Frame - foldover at top. | C610 ( 220u f ) | 14-09-04 |
| Hitachi | NP81CQ | Frame - int frame collapse/top cramping | C608 ( 22u f ) | 14-09-04 |
| Hitachi | NP81CQ | HIGH BRILL VERY INT | ZD802 5.1v ZENER ON CRT BASE | 14-09-04 |
| Hitachi | NP81CQ | Hum on picture - varies with picture. | Fit 22k in series with D402 if not fitted. | 14-09-04 |
| Hitachi | NP81CQ | Int colour | delay gate pulse coil L506 faulty | 14-09-04 |
| Hitachi | NP81CQ | Int frame collapse. | Drys R607. | 14-09-04 |
| Hitachi | NP81CQ | No/Int loss of colour. | L506 ( P No 2160831 ) | 14-09-04 |
| Hitachi | NP81CQ | Small faint raster. | C909 ( 220u f 160v ) | 14-09-04 |
| Hitachi | NP81CQ | Spluttering | dry joints loptx earth pin | 14-09-04 |
| Hitachi | NP81CQ | Squeal from chopper Tx at switch on. | C909 ( 220u f 160v ) , Dry R702 , C912 , R905 , R906 | 14-09-04 |
| Hitachi | NP81CQ | Startup - no startup. | DJ on pin 4 of T901. | 14-09-04 |
| Hitachi | NP81CQ | Sync - lack of frame & line sync. | R723 ( 22k ) o/c. | 14-09-04 |
| Hitachi | NP81CQ | Thin white line travels up screen | dry joints M601 field o/p device | 14-09-04 |
| Hitachi | NP81CQ | Whistling - from power supply. | DJs on C912 , R905/6. | 14-09-04 |
| Hitachi | NP81CQ Mk2 | Field lin - cramped at top | C608 22µ 160v | 14-09-04 |