hitachi Repair Tips
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Results 930
Results 930
Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
---|---|---|---|---|---|
Hitachi | G7PS2 | BRIGHT WHITE THEN FIELD COLLAPSE | CHECK Q801 SC | ||
Hitachi | G7PS Mk2 | Field collapse 1cm high | IC703 AN7809 9v reg leaky | ||
Hitachi | G7PS C2119T | St/by only | R903 82k by chopper tr hi res, or IC601 LA7836 fop chip | ||
Hitachi | G7PS C2114T | Stuck in st/by | HT ok at 112v - cause was FOP chip TDA8274K | ||
Hitachi | G7PS C2114T | Sound absent & streaky white lines on pic when cold | C955 47µ 25v in 15v smoothing supply | ||
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 | ||
Hitachi | G7PS C21119T | Field collapse int | D601 1N4002 flyback boost diode going int o/c | ||
Hitachi | G7PS | Striations on lh side - ok from scart | L101 choke in 12v supply faulty | ||
Hitachi | G7PS | R763 burns up at sw on | R760, 761, 762 & 766 all o/c & R763 3k3 replaced | ||
Hitachi | G7PS | PSU blow up | Reason could be - T901 dry joints on pcb & wrapped end | ||
Hitachi | G7PS | low ht 40v & Q903 chopper overheating | D905 s/c | ||
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. | ||
Hitachi | G7PII | St/by only - trips at sw on | IC703 reg dry joints | ||
Hitachi | G7PII | St/by only - trips at sw on | HT = 130v (110v) R909 39k risen in value and adj HT pot | ||
Hitachi | G7PII | St/by only | C906 4µ7 250v, ZD903 130v zener s/c & R909 39k as a precaution | ||
Hitachi | G7PII | slow start up | R909/2/3 all ok but C906 4µ7 250v hi esr & C905 100µ 160v | ||
Hitachi | G7PII | No start up - comes on briefly then trips | R909 39k hi res | ||
Hitachi | G7PII | No start up | Pin 9 IC901 low at 5v (9v) - C914 10µ 50v faulty | ||
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 | ||
Hitachi | G7PII | Int off | R919/920 100k also check R932 150k |