HITACHI NP81 Repair Tips
Search: NP81 HITACHI
Results 28
Results 28
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Hitachi | NP81CQ Mk2 | Flyback lines at top | C715 4µ7 250v | ||
| Hitachi | NP81CQ Mk2 | Field lin - cramped at top | C608 22µ 160v | ||
| Hitachi | NP81CQ | Whistling - from power supply. | DJs on C912 , R905/6. | ||
| Hitachi | NP81CQ | Thin white line travels up screen | dry joints M601 field o/p device | ||
| Hitachi | NP81CQ | Sync - lack of frame & line sync. | R723 ( 22k ) o/c. | ||
| Hitachi | NP81CQ | Startup - no startup. | DJ on pin 4 of T901. | ||
| Hitachi | NP81CQ | Squeal from chopper Tx at switch on. | C909 ( 220u f 160v ) , Dry R702 , C912 , R905 , R906 | ||
| Hitachi | NP81CQ | Spluttering | dry joints loptx earth pin | ||
| Hitachi | NP81CQ | Small faint raster. | C909 ( 220u f 160v ) | ||
| Hitachi | NP81CQ | No/Int loss of colour. | L506 ( P No 2160831 ) | ||
| Hitachi | NP81CQ | Int frame collapse. | Drys R607. | ||
| Hitachi | NP81CQ | Int colour | delay gate pulse coil L506 faulty | ||
| Hitachi | NP81CQ | Hum on picture - varies with picture. | Fit 22k in series with D402 if not fitted. | ||
| Hitachi | NP81CQ | HIGH BRILL VERY INT | ZD802 5.1v ZENER ON CRT BASE | ||
| Hitachi | NP81CQ | Frame - int frame collapse/top cramping | C608 ( 22u f ) | ||
| Hitachi | NP81CQ | Frame - foldover at top. | C610 ( 220u f ) | ||
| Hitachi | NP81CQ | Flyback lines on picture. | C715 ( 4.7u f 250v ) | ||
| Hitachi | NP81CQ | Field bounce esp on chan change & hi contrast | C601 220µ 50v u/s | ||
| Hitachi | NP81CQ | Dead. | R905 ( 56R 3w ) o/c , R906 ( 82R 2w ) o/c. | ||
| 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 |