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51GT-25 (serv.man5). - Part 4 - Schematic diagrams (21-30) - Sharp TV Service Manual (repair manual). Page 9

Read Sharp 51GT-25 (serv.man5) Service Manual online

29
51GT-25H
TROUBLESHOOTING TABLES.
 
NO VERTICAL SCAN
  Broken
  Normal
Check Q507 and
 R504
  Normal
  Broken
 Check Q5091
 Normal
  ±10 V
 abnormal
 Check Q500, 
D709, C712, 
D710 and 
C713
Check power
supply voltage
 Check  Q503, 
Q505, Q506, 
Q510 and IC501
Is R512 
Broken?
Are R504 or 
R608 
Broken?
 NO PICTURE
     Normal
Open
 Change
   R609
 0V
Check C876, T601
and connection G2
     Normal
    Check CRT
 Check
  R609
 Check 
C867 
voltage
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