| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | G7PS | Striations on lh side - ok from scart | L101 choke in 12v supply faulty | 14-09-04 |
| Hitachi | G7PS C21119T | Field collapse int | D601 1N4002 flyback boost diode going int o/c | 14-09-04 |
| Hitachi | G7PS C2114 | Reverts to st/by when r/c operated after set been on several hours | Also when Chan 8 selected set goes to Ch 9 - IC001 micro TMP series replaced | 14-09-04 |
| Hitachi | G7PS C2114T | Sound absent & streaky white lines on pic when cold | C955 47µ 25v in 15v smoothing supply | 14-09-04 |
| Hitachi | G7PS C2114T | Stuck in st/by | HT ok at 112v - cause was FOP chip TDA8274K | 14-09-04 |
| Hitachi | G7PS C2119T | St/by only | R903 82k by chopper tr hi res, or IC601 LA7836 fop chip | 14-09-04 |
| Hitachi | G7PS Mk2 | Field collapse 1cm high | IC703 AN7809 9v reg leaky | 14-09-04 |
| Hitachi | G7PS2 | BRIGHT WHITE THEN FIELD COLLAPSE | CHECK Q801 SC | 14-09-04 |
| Hitachi | G7PS2 | DEAD , 130v ZENER s.c. | REPLACE R909 39K EVEN IF READS OK. | 14-09-04 |
| Hitachi | G7PS2 | Dead. | 112v rail high R716 ( 51k ) o/c. | 14-09-04 |
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|
| Hitachi | G7PS2 | Fails to start | R902 & R903 ( 82K ) | 14-09-04 |
| Hitachi | G7PS2 | HIGH EHT WITH SET TRIPPING TO SBY INSTANTLY | R909 39K HIGH also replace ZD903 | 14-09-04 |
| Hitachi | G7PS2 | INT DEAD | ZD901 6v8 zener | 14-09-04 |
| Hitachi | G7PS2 | INT DEAD | 39K - 82K POWER SUPP - ALSO D/J on reg 12V (EDGE OF PCB BY LOPT. ) | 14-09-04 |
| Hitachi | G7PS2 | INT. FLAG WAVING AFTER TELETEXT USE | IC2002 ( TEXT PCB ) | 14-09-04 |
| Hitachi | G7PS2 | No OSD set works ok | Replace HD401314RS | 14-09-04 |
| Hitachi | G7PS2 | No signals Tuning bar moves as if tuning but no va | Check R044 ( 12K ) | 14-09-04 |
| Hitachi | G7PS2 | OSD NOT CLEARING | DOO7 HIGH | 14-09-04 |
| Hitachi | G7PS2 | Shuts down aft 20 secs with buzz | In prot mode (shutdown volts at pin 20 TA8690AN) ZD701 3v9 zener leaky | 14-09-04 |
| Hitachi | G7PS2 | STANDBY ONLY | IC703 DRY JOINTS | 14-09-04 |
| Hitachi | G7PS2 | When tried to tune in the correct display appeared | The 33V tuning voltage supply was missing because R044 ( 12k ) was open-circuit. | 14-09-04 |
| Hitachi | G7PSL | Excess bright raster | RGB colls low volts - Q801 BC558B leaky (on main pcb) | 14-09-04 |
| Hitachi | G7PSL | Field chip has short life | Add 2 x 33v zeners in series - cathodes to pin 2 IC601 & anode to chassis - if this has no effect , could be crt flashover | 14-09-04 |
| Hitachi | G7PSL | Field jitter when hot | D601 1N4002 | 14-09-04 |
| Hitachi | G7PSL | Field non lin | C712 2200µ 50v & C606 680µ 16v | 14-09-04 |
| Hitachi | G7PSL | No signals - osd searches | Tuning volts missing VT pin tuner, R044 12k o/c | 14-09-04 |
| Hitachi | G7PSL | NO TUNING - JUST SNOW ( TUNING BAR PRESENT ON SCRE | R044 12k OC. ZD002 ( 33V Zen ) Q003 | 14-09-04 |
| Hitachi | G7PSL | St/by only | Q781 2SD1884 LOPTr, Q903 BUT12AF chopper tr & ZD903 P6KE180A overvolts zener s/c - R760, R761, R762 & R766 2R2 ?w hi res | 14-09-04 |
| Hitachi | G7PSL2 | St/by only | ZD903 130v zener s/c; C906 4µ7 250v hi esr; R901 6R8 5w o/c;Q903 BUT12AF s/c; F901 2.5A o/c - all caused by dry joints T901 | 14-09-04 |
| Hitachi | G7PSMK2 | Dead - HT at 145v. | R909 high. | 14-09-04 |