Revisiones Claves Para TV PLASMAS.

March 19, 2019 | Author: kalentoneschat | Category: N/A
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CLAVES, RECURSOS, DIAGNOSTICOS PARA TELEVISORES PLASMAS....

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Revisiones Claves para PLASMAS

Como chequear voltajes de fuente?

Como chequear voltajes de YSUS?

Como chequear voltajes de ZSUS?

COF #ev$s$on (CHIPde ON COF FI!"

Estas resistencias controlan la forma de onda que alimenta a los COF. u valor de!e ser de "#.$ % "#.& O'ms .

Estos IC toman la forma de onda que viene de las X B/D para mandarlas al panel de forma controlada cundo este encendido o apagado. 96 pines por IC son controlados.

#ev$s$on de Fle%$&les de Panel

Medición Normal 0.65V -

#ev$s$on de ,ufer en Y- .#I+/

Empleando el modo de test de Diodo en el multimetro( puede revisar los pines de cortos ) valores anormales

0 Hor$4ontal l$nes $ssues  *o+ to anal),e 'ori,ontal line s'ort *o+ to anal),e 'ori,ontal line s'ort-

It could ha55en that the o5en hor$4ontal l$ne $s caused &6 defect$ve scan IC $n the Y dr$ve &oard

ome times output pins of scan ICs in  drive !ecome s'orted

C'ec0 output pins condition in  drive ICs using t'e o'm 1eter. 2lace negative tip on ground pin of IC and t'en pass t'e positive tip across all t'e output pins at t'e connector. 'orted output pin +ill s'o+ lo+ impedance in meter.

0 Hor$4ontal l$nes $ssues  *o+ to anal),e 'ori,ontal !ar *o+ to anal),e 'ori,ontal !ar-

C'ec0 scan ICs output pins condition !) 3sing t'e procedure in t'e previous page. C'ec0 for missing components on  drive !oard.

C'ec0 for !ro0en or damaged Components in  drive !oard.

Soldadura

Driver cloc0 line at X Driver Board is designed to operate in 4 and B group ▶ 'ort circuit at cloc0 line of Drive IC ▶ If pro!lem at input stage( several lines are defected at one point ▶ 5eplace t'e X Board of defected point

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