hitachi Repair Tips




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Results 930
MakeModel Ch.SymptomProblem SolutionSolutionBy:
HitachiG8Q
Outline & shimmersIC201 in IF panel
HitachiG8Q
off - ht presentno line drive - IC701 pin 10 only 4v (12v) C933 2200µ also C932 470µ 16v & C934 220µ 16v
HitachiG8Q
offNo volts pin 7 IC901 TH902 o/c & ZD901 s/c
HitachiG8Q
No tuningR1534 39k hi res
HitachiG8Q
No text - VERY weak text in mix + poor osdTDA3562A us
HitachiG8Q
No textCheck programming
HitachiG8Q
No syncQ2110 BC548B on txt panel
HitachiG8Q
No startup - sounds like faulty BU.C85 s/c.
HitachiG8Q
No start up - st/by onlyR903 82k o/c
HitachiG8Q
No sound/pic - psu working okNo 12v supply as reg was u/s
HitachiG8Q
No sound/pic - blank raster when A1 increasedDry joint connection to sleeved wire that links 8v supply to IC001 5v reg
HitachiG8Q
NO SOUND PICTURE GOES WHITEIC952 12v REG US
HitachiG8Q
NO SOUND OP STAGE OKD401 IN IF CAN OC
HitachiG8Q
NO SOUND INT GOES TO STBYIC1501 MICRO u/s.
HitachiG8Q
No soundD701 1N4148 & TDA2579 timebase chip
HitachiG8Q
NO SOUNDD701 ( 1N4148 ) , TDA2579.
HitachiG8Q
No raster - field collapseCheck pin 9 IC601 if low (should be 9v) check R715 1R for o/c
HitachiG8Q
No OSDR008 470k o/c or dry jointed
HitachiG8Q
No or only part of display showsCheck IC1501 SAA1293H by subst - if only part of display showing check R15060R1513 100R
HitachiG8Q
no eht & 12vsupply only 5vC933 2200µ 25v leaky