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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 12
Hitachi
G8Q/P
Dead with "--" in display with motorboating sound
Q1510 BC548B s/c on the Microprocessor sub-board
14-09-04
Hitachi
G8Q/P
Goes to st/by at sw on, will come on with R/C but with blank raster only
SDA line low. 5V regulator L7805 o/c on the text board and QF001 ICP N15 o/c near tuner.
14-09-04
Hitachi
G8Q/P
No pic - sound ok - line tearing before loss of pic
C933 2200µ 25v in 12v supply - also check C932 470µ 16v
14-09-04
Hitachi
G8Q/P
No pic or sound, blank raster with corrupted OSD
C932 1000µ 16v in 8v supply o/c
14-09-04
Hitachi
G8Q/P
St/by only - HT high at 200v
R941 100k o/c
14-09-04
Hitachi
G8Q/P
Txt - unable to return to pic without mains reset, blank screen etc
C932 470µ 16v had caused L932/R931 in 12v rail to fail due to ripple on 12v line - can damage TDA2579A & chips on Txt panel also
14-09-04
Hitachi
G8QP
Complete failure
Check for cracks in print around Chopper TX
14-09-04
Hitachi
G8QP
DEAD , ONLY HT ( 110v ) BOTH 8v AND 12v LINES LOW
CHECK C933 2200mfd ON 12v
14-09-04
Hitachi
G8QP
HIGH BRILL AT SWITCH ON MAY RECOVER WHEN WARM
C 720 4.7mfd 250v
14-09-04
Hitachi
G8QP
LINE ACROSS SCREEN
R715 ( 1R0 ) HIGH
14-09-04
Hitachi
G8QP
SOUND NO PICTURE , NO LINE DRIVE AT PIN 11 TDA 257
TDA2579 US
14-09-04
Hitachi
G8QP C2558TN
Dead - fuse o/c
C915 1n5 2kv in psu s/c
14-09-04
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