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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: 7
Sharp
8
PSR
Chirps & sw to st/by at sw on
IC801 line osc supply pin low at 3v. R679 100k o/c
14-09-04
Sharp
8
PSR
Int dead then dead
Dry joints & C723 3µ3 non pol cap
14-09-04
Sharp
CV2123H 7
PSR
1
Trips at sw on
Dry joints psu or STR41090 chopper chip - test by powering up with reduced mains - if set does not start the chip is faulty
14-09-04
Sharp
CV2133H 8
PSR
Trips once then dead
C723 3µ3 63v bipolar cap - fitted 2 x 4µ7 63v back to back in lieu
14-09-04
Sharp
CV2133H 8
PSR
watermark effect
C318 220µ 25v LT cap
14-09-04
Sharp
CV3707HD 5
PSR
1
St/by only - psu o/ps correct
No line drive to Q601 as Q605 sw off by micro. By operating switch SI011 set works without man or R/C. Micro IX0714CE faulty
14-09-04
Sharp
CV3707HD 5
PSR
1
STUCK IN STBY NO LINE DRIVE DUE TO Q605 BEING TOL
PRESS SWITCH S1011 IF SET STARTS LOPT STAGE OK .
14-09-04
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