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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: 9
Hitachi
C2
864
TN
Electronic screwdriver set up
Hold the vol + and - buttons and switch on. The set will come up with Factory 05 on screen. On the handset press the two rec keys twice(linked by white line) The set will display the tube menu. The top coloured adjustments correspond to the top coloured keys on the handset , the bottom coloured adjustments correspond to the bottom coloured keys. Push the coloured key on the hand set corresponding to the adjustment, ie VA for vertical Amplitude. VA will be high lit. Now pressing the Vol+ or - on the handset will adjust the value. To store the settings , press diamond shaped key (store) and put set into standby to exit service mode. You do not need to store each adjustment, you can adjust them all and store them once at the end. It is a good idea to jot down all the numerical values for all the adjustments first, so if you make a mess you can put the adjustments back to their original settings.
14-09-04
Hitachi
C2
864
TN
Slow tripping/partial field coll/blank raster/no sound
R609 1R fusible o/c - also replaced TDA8178 Field o/p IC as a precaution
14-09-04
Hitachi
C2
864
TNX
Dead aft EHT rustle & led single blink at sw on
HT checked on dummy load at 170v (149v). Int set HT pot VR930; R509 1R 1/2w safety res by LOPTx o/c; IC800 RGB o/p chip & C821 4µ7 250v faulty also.
14-09-04
Hitachi
C2
864
TNZ
Slow or no start up
C909 470µ 25v
14-09-04
Hitachi
CL2
864
TA
Dead except for flasing red led
D704 BY228 on lop sub panel s/c
14-09-04
Hitachi
CL2
864
TA
Hum on sound with pic instability
Replace C916, C942 & C957 in psu
14-09-04
Hitachi
CL2
864
TA
PSU tripping - went off with a bang
Overload on LOP caused by IC800 TEA5101A RGB o/p chip s/c
14-09-04
Nokia
Monoplus 5
864
Lack of width with HT set correct at 109v
Coil LK11 in series with scan coils shorted turns
14-09-04
Nokia
Monoplus 5
864
To set HT & other menu driven functs
s/c test point XF01 to chassis, enter service mode by pressing Mute, M & TV on handset. Move up/down menus, use vol up/down to change settings. Measure HT at test point X003
14-09-04
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