Author Topic: 21 inch tv black screen sound ok (Read 514 times)

kuya burt · « **on:** June 02, 2012, 05:07:44 PM »

mga master may ginagawa ako 21 inch tv tosunra ang brand ordinary china made po black screen ok naman ang sound at mga control nya like channels volume at tv/av pag tinaasan ko ang screen sa fbt may naaninag na picture pero retrace line po. ano po kaya ang problema nito
sana po maayos ko ito para may pangkape tayo

Philippine Electronics Forum · « **on:** June 02, 2012, 05:07:44 PM »

Min · « **Reply #1 on:** June 02, 2012, 05:21:55 PM »

Check mo muna sis ABL resistor baka open resistance na.

Philippine Electronics Forum · « **Reply #1 on:** June 02, 2012, 05:21:55 PM »

pEN DoTA · « **Reply #2 on:** June 02, 2012, 05:24:41 PM »

look for a cold solder kuya. sa tuner section tingnan mo. ito yung china board di ba? madalas loscon yan.

Philippine Electronics Forum · « **Reply #2 on:** June 02, 2012, 05:24:41 PM »

kuya burt · « **Reply #3 on:** June 02, 2012, 06:56:57 PM »

mga master ok naman ang abl resistor 1.5k at ni resolder ko na ang tuner but still retrace pa rin nag sukat ako r=175v g=175v b=175v b+180v g1=125v pls help me solve this

Philippine Electronics Forum · « **Reply #3 on:** June 02, 2012, 06:56:57 PM »

enriz622 · « **Reply #4 on:** June 02, 2012, 07:57:24 PM »

ang heater mo sis ilang volts

Philippine Electronics Forum · « **Reply #4 on:** June 02, 2012, 07:57:24 PM »

kuya burt · « **Reply #5 on:** June 02, 2012, 11:40:17 PM »

sis master 5v ang heater at correction po ang g2 po 380v

enriz622 · « **Reply #6 on:** June 03, 2012, 04:20:34 AM »

Malinaw ba osd nya sis

kuya burt · « **Reply #7 on:** June 05, 2012, 09:41:04 PM »

mga master mababa po ba ang g2 voltage kung 125v lang ang nasusukat ko atsaka matagal po sya talaga sumindi ang screen pag sumindi naman eh madilim pa rin at pag tinaas naman eh retrace line na parang note book black and white

kerwinz1 · « **Reply #8 on:** June 05, 2012, 09:53:47 PM »

baka makatulong d naman ako expert pero try ito . tingnan mo ang crt connector baka maitim na ang spark gap nya o kaya loss connection ang wire galing fbt..

m@r · « **Reply #9 on:** June 06, 2012, 08:30:15 AM »

pwede rin sa crt at try mo echeck yong ciramic disc cap sa crt... taasan yong screen grid sa fbt...

mcleod · « **Reply #10 on:** June 06, 2012, 10:19:51 AM »

palitan crt / cpt socket but be aware sa pin out dapat sakto as original na nakalagay. check mo chroma ic, google mo datasheet look for R G B pins check mo naka-connect dito. tapos hanapin mo na rin yung "color" pin. check mo din. yung payo ni sis HG: abl line mo check mo.

pEN DoTA · « **Reply #11 on:** June 08, 2012, 07:03:10 PM »

tapos naba to?

kuya burt · « **Reply #12 on:** June 13, 2012, 11:27:26 AM »

ganon pa rin po wala talagang pagbabago eh

centOS · « **Reply #13 on:** June 13, 2012, 02:44:49 PM »

pa subs... magandang experience yan ts madami tayo makuha idea pano mag troubleshoot

(newbie)

NORTH LUZON · « **Reply #14 on:** June 13, 2012, 03:00:19 PM »

eeprom problem

ultrasonic™ · « **Reply #15 on:** June 13, 2012, 03:52:31 PM »

Quote from: LAKAS-CHAMBA amianan on June 13, 2012, 03:00:19 PM

eeprom problem

pwede

pwede din video caps

mcleod · « **Reply #16 on:** June 14, 2012, 08:03:21 AM »

Quote from: kuya burt on June 13, 2012, 11:27:26 AM

ganon pa rin po wala talagang pagbabago eh

nagpalit ka ba ng mga ecaps? lalo na yung xx uf / 250V? nagpalit ka ba ng crt socket? gusto mo ito maayos ng walang gastos? madalas kelangan magpalit ng components para ma-repair.

bluetooth · « **Reply #17 on:** June 14, 2012, 08:26:30 AM »

direct sub ng ecap sa cboard... hula ko caps lng yan..

scop03 · « **Reply #18 on:** June 14, 2012, 11:57:42 AM »

palitan mo na ung advice nila sir, crt socket at 250v/xxmf

TBG · « **Reply #19 on:** June 14, 2012, 01:33:05 PM »

kung hindi sa crt socket,10UF/250 malamang sa tube na yan

Philippine Electronics Forum · « **Reply #19 on:** June 14, 2012, 01:33:05 PM »

Author Topic: 21 inch tv black screen sound ok (Read 514 times)

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