Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
---|---|---|---|---|---|
Sony | BE1 | pic washed out & flaring | R852 overheating (1K0) & D852 leaky | ||
Sony | BE1 | No sync when cold | IC02 SAA5231-V6 vid proc chip faulty | ||
Sony | BE1 | No sync - sometimes intermittent | repair print to collector of Q02 on txt pcb | ||
Sony | BE1 | LOW WIDTH | L804 O.C. | ||
Sony | BE1 | LINES OF RED , BLUE , GREEN AT TOP OF SCREEN | IC501 ( FIELD OUTPUT DRY ) u/s R801 ( 1K ) | ||
Sony | BE1 | Lack of width & E/W dist | L804 2.7mH o/c - couples E/W drive to diode mod | ||
Sony | BE1 | Iont sound & vis - goes black with lines | Dry joints in VIF can | ||
Sony | BE1 | Int loss of sync | No vid from txt pcb to sync sep pin 5 IC551. 12v supply on txt pcb only 5v due to Q02 o/p (sm) 2SC2873-Y faulty | ||
Sony | BE1 | Int goes to lines / loss of sound | Dry joints T01 & T02 in IF can | ||
Sony | BE1 | Hooking at top of pic with buzzing from lop stage | line dr pulse at pin 8 of TDA2579A IC551 affected when fault present - chip faulty | ||
Sony | BE1 | Field collapse | IC501 µPC1488H faulty - supply from LOPTx high - dry joint on loptx esp pin 11 (chassis) | ||
Sony | BE1 | Field collapse | Replace fop chip with a µPC1488H (orig LA7830) & check cct prot | ||
Sony | BE1 | Field collapse | Check R801 ( 0.47R ) & PS501 if both o/c IC501 ( uPC1488 ) u/s if ok check for D/J around ic | ||
Sony | BE1 | E/W & Width problems | C808 47nf 250v | ||
Sony | BE1 | Dead. | BU506 , D611 , R606 ( 68R ) |