Proview 786PF service manual Bright HOR. LINEH. Trouble Shooting Hints

BRIGHT HOR. LINEH. TROUBLE SHOOTING HINTS

APPEAR ON THE

SCREEN

NO POWER

T501 (7)

160 V ?

Yes

IC501 (7)

＞14 V ? Yes

IC501(6) 14Vp-p ?

Yes

D510 (-)

15.5V ?

CIRCUIT

SHORT

No

No

No

No

CHECK F501,D514 , D515,D516, D517

CHECK

IC501,R539,

D505,ZD551

CHECK

IC501,Q504

CHECK

D510,Q501,

Q508

T501(7) VOLTAGE

AC120V IN 160V

AC220V IN 294V AC230V IN 308V

20