Author Topic: kv-21gdr2 wont function (Read 488 times)

mcleod · « **Reply #20 on:** May 31, 2012, 10:59:17 PM »

Quote from: tomee on May 31, 2012, 10:25:07 PM

mga master my oscilation na sya pero bumasak un oscilation pati un 24v at 9v galing sa 78M09A JRC pero hang qo na un 9v dun s jungle bagsak pa din pati papunta tuner bagsak padin pero pag hang qoh un 78M09A ok un oscilition pati u 24v pero wla 9v ..mga master nu kaya sira nito help u naman aq galing kc ibang pagawaan reply

test mo yang 78M09A mo input / output. suggestion lang sis, baka gusto mo palitan mga ecaps sa vertical section pati yung xx uf / 250 V. check mo din yung mga ic's mo may proper voltage supply base sa datasheet na i-gogoogle mo. check resistors and ecaps sa abl section.

Philippine Electronics Forum · « **Reply #20 on:** May 31, 2012, 10:59:17 PM »

enriz622 · « **Reply #21 on:** June 01, 2012, 10:04:14 AM »

Check r048 sis parang 180k ata

Philippine Electronics Forum · « **Reply #21 on:** June 01, 2012, 10:04:14 AM »

tomee · « **Reply #22 on:** June 01, 2012, 07:09:35 PM »

nakaincounter knb ng sira ganito master bumabagsak un 24v

Philippine Electronics Forum · « **Reply #22 on:** June 01, 2012, 07:09:35 PM »

enriz622 · « **Reply #23 on:** June 01, 2012, 08:46:38 PM »

24v yung supply ba ng vertical yan

Philippine Electronics Forum · « **Reply #23 on:** June 01, 2012, 08:46:38 PM »

enriz622 · « **Reply #24 on:** June 01, 2012, 08:59:25 PM »

direct sub mo nga ito sis 78M09A at check mo din ito L78LR05 5V regulator

Philippine Electronics Forum · « **Reply #24 on:** June 01, 2012, 08:59:25 PM »

tomee · « **Reply #25 on:** June 02, 2012, 07:51:00 AM »

24v direct galing flyback supply din ng vertical ic..

tomee · « **Reply #26 on:** June 02, 2012, 03:48:37 PM »

master STR S6307 gamit ng model nito yan kasi un REg IC nya master..

tomee · « **Reply #27 on:** June 06, 2012, 11:01:18 PM »

master bumabagsak un oscilation ng 24v,8v,12v ok stable nman un b+ nya model kv-21gdr2 nu kaya cra nito???

mcleod · « **Reply #28 on:** June 07, 2012, 08:21:39 PM »

check mo abl line mo, resistors and capacitors. try mo adjust screen and focus mo kung may effect or pa-test mo na fbt kung wala kang pang -test. consider mo rin yung STRS6307 google mo datasheet, observe pin outs and voltages. baka di na ito nag - reregulate(unahin mo na ito).

Philippine Electronics Forum · « **Reply #28 on:** June 07, 2012, 08:21:39 PM »

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