2 ) the external imbalance correction circuit filter capacitor C135, C136;

3 ) clock circuit Y2 16.9344M crystal , C147, C148;

4 ) spindle drive filter capacitor C160.

( C) " three noes " Fault

1 ) Four-terminal regulator chip power board PQ05 and decoder board 3.3V regulator chip ;

2) CL8830A, 27MHZ crystal

3 ) reset circuit Q2, C118;

(D ) to read VCD discs , but do not read SVCD discs

1) Q4 9014 transistor ;

2) C164, C165 variable values.

( Five ) audio glitches

1 ) Audio D / A converter 6631 ;

2)-12V three terminal regulator IC.

(F ) the power doors

1) C183, C184, C186. ( Decoding board and function board connector side )

2 ) functional board IC PT6311

(Vii ) the display is not bright, red filament

1)-23V voltage is not normal .

2) PT6311 or 66880 damage.

(H ) No game features

1) The game interface board socket Weld.

2 ) decoder board and game interface board cable loose.

 

Sixth, the experience section

1, using the SONY + C-CUBE program machines , CL8830A bad ratio to more than 40% , while the " no output " fault them , it is more than 80 % of all CL8830A bad , so repairs before removing IC technology must be place. Demolition , it is recommended to use about 700W hot air gun , when installed suggested 40W soldering iron, soldering iron must be grounded , I found that most of the iron is leakage , so the voltage before using your block measuring about . In addition , many people ignore the impact of iron caused by high temperatures , as long as technology Haojiu Xing , the actual temperature is too high will result when you drag soldering IC, the last few feet are always connected to welding, drag is not open As for the quality of solder Needless to say , the poor simply can not drag soldering solder .

 9   Home Previous 5 6 7 8 9 Next Last