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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: 6
Hitachi
C1714T
Pic size decreases with brightness
HT low - CNX82A opto coupler IC901 s/c pri
14-09-04
Hitachi
C1714T
St/by only
Dis supply to fop chip to check if this is cause - if then ok apart from field collapse, check fop chip TA8427k & D702
14-09-04
Hitachi
C1714T etc
Field o/p chip repeatedly fails
Replace ic 601. get two 33v Zener diodes and connect them in series ( BZX79C33V) connect the anode to pin 1 of ic601 cathode to pin 2 of ic 601. Fit 10nF 50v capacitor across the frame scan plug E701 on print side of the plug. If the ic still blows after this mod. a new CRT is required. The tube is flashing over. This applies to all sizes of 14T/TE range of sets
14-09-04
Hitachi
C1714TE (A15 chassis)
No Txt & delay in returning to st/by
Check 5v supply pin 44 micro - if low ZD4001 5v1 zener is sus
14-09-04
Hitachi
C1714TE (A15 chassis)
To acess service menu
press the following buttons on the remote: 4 4 STATUS MUTE TV in that order and fairly quickly. The service menu is displayed. Check that BYTE 1 = 7D; BYTE 2 = 20 These are two hex digits - to exit menu press st/by
14-09-04
Hitachi
C1719T
Dead
C906 4µ7 250v, ZD903 P6KE130 & check R902/3 82k & C908 33µ
14-09-04
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