| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | G7P Mk2 | off | R901 6R8 5W o/c BUT12AF chopper tr s/c ZD903 180v over volts diode ZD903s/c | 14-09-04 |
| Hitachi | G7P Mk2 | off with smoke | C919 4n7 1kv & C928 2n2 1kv cracked cases | 14-09-04 |
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| Hitachi | G7P Mk2 | Pic blanks out int or goes bright & trips | C711 47µ 200v dry jointed by LOPTx | 14-09-04 |
| Hitachi | G7P Mk2 | Reverts to st/by aft few mins | HT gone high as C906 4µ7 250v is faulty | 14-09-04 |
| Hitachi | G7P Mk2 | Snowy raster & no controls work | pin 15 IC101 micro high -caused by faulty IC601 AN5521 FOP chip | 14-09-04 |
| Hitachi | G7P Mk2 | Trips at sw on | C737 100µ in trip cct o/c | 14-09-04 |
| Hitachi | G7P Mk2 | Tuning drift & nothing tuneable above Ch36 | Only 7v across 33v zener. IC101 HD401304R12S faulty | 14-09-04 |
| Hitachi | G7P Mk2 | Won't start up again aft being switched off | R913 100R in base of chopper tr o/c | 14-09-04 |
| Hitachi | G7P MkII CPT2508 | Dead - LOPTr blows | IC701 TDA2579 | 14-09-04 |
| Hitachi | G7P MkII CPT2508 | Pic pulls to right when heated | Q905 connection to pcb suspect - resolder | 14-09-04 |
| Hitachi | G7P2 | WONT START | CHECK - R931 ( 150K ) , R932 ( 120K ) , R919 AND R920 ( 100K ) CONNECTED IN PAIRS TO TDA4601 | 14-09-04 |
| Hitachi | G7PII | Dead | C919 4n7 1kv had split - replacement was 2n2 | 14-09-04 |
| Hitachi | G7PII | Dead | R931 150k o/c; IC901 internal s/c; 2 diodes on print side s/c (between chassis & Q901 base) - 1N4148 & 6v2 zener; BUT11AF o/c base | 14-09-04 |
| Hitachi | G7PII | dead | ZD903 130v zener s/c; replace R909 39k, R912 47k, R902/3 82k, C906 4µ7, Q905 BF423 | 14-09-04 |
| Hitachi | G7PII | dead | 82k start up resistors o/c & hi res | 14-09-04 |
| Hitachi | G7PII | dead - gives a rush of noise thr' spkr initially | C914 10µ 50v, C910 33µ 10v, C929 1µ 50v, C915 100µ 10v, C917 4µ7 50v all 105 deg | 14-09-04 |
| Hitachi | G7PII | field collapse | R719 2R2 safety res o/c - no other fault found | 14-09-04 |
| Hitachi | G7PII | int field collapse | 9v supply to field chip drops to zero, IC703 MC7809 faulty or dy jointed | 14-09-04 |
| Hitachi | G7PII | Int off | R919/920 100k also check R932 150k | 14-09-04 |
| Hitachi | G7PII | int start up | start up volts pin 9 IC901 only 2v - check/replace resistor chain R939,940,941,942,902,903 & C914 2µ2 | 14-09-04 |
| Hitachi | G7PII | No start up | Pin 9 IC901 low at 5v (9v) - C914 10µ 50v faulty | 14-09-04 |
| Hitachi | G7PII | No start up - comes on briefly then trips | R909 39k hi res | 14-09-04 |
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| Hitachi | G7PII | slow start up | R909/2/3 all ok but C906 4µ7 250v hi esr & C905 100µ 160v | 14-09-04 |
| Hitachi | G7PII | St/by only | C906 4µ7 250v, ZD903 130v zener s/c & R909 39k as a precaution | 14-09-04 |
| Hitachi | G7PII | St/by only - trips at sw on | HT = 130v (110v) R909 39k risen in value and adj HT pot | 14-09-04 |
| Hitachi | G7PII | St/by only - trips at sw on | IC703 reg dry joints | 14-09-04 |
| Hitachi | G7PMk2 CPT2808 | To bypass Txt panel when a fault here is suspected of causing pic fault | Shorting pins 2 & 3 of the 5 pin connector (E001) on the main board. This links the video in to the sync out lines, thus restoring normal picture and sound. | 14-09-04 |
| Hitachi | G7PS | low ht 40v & Q903 chopper overheating | D905 s/c | 14-09-04 |
| Hitachi | G7PS | PSU blow up | Reason could be - T901 dry joints on pcb & wrapped end | 14-09-04 |
| Hitachi | G7PS | R763 burns up at sw on | R760, 761, 762 & 766 all o/c & R763 3k3 replaced | 14-09-04 |