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Author Topic: sony kv-21mf1, need schem  (Read 831 times)

Offline envader

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sony kv-21mf1, need schem
« on: May 27, 2011, 08:11:46 PM »
mga master, naguguluhan ako sa design nit0ng unit, kc wlang xformer driver ang hot, shorted ang hot nya, npakataas ng osc s base drive ng hot. K1482 ang xsistor driver, 6vdc ang supply nito s drain at may nka series lng s drain n caps 47uf/160v papunta n sa base ng hot, strf6614 ang reg at cxa2131s ang jungle. Ngaun lng ako nkaincounter nitong wlng hdt ng hot. Bka mer0ng nkaexperience s mga master, share nmn at mapa nito. Tia
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sony kv-21mf1, need schem
« on: May 27, 2011, 08:11:46 PM »

Offline taqui

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Re: sony kv-21mf1, need schem
« Reply #1 on: May 27, 2011, 08:45:52 PM »
anung prob? sira hot?

wait tau ng masters
mag painit ka muna .. kapag nilalamig..

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Re: sony kv-21mf1, need schem
« Reply #1 on: May 27, 2011, 08:45:52 PM »

Offline pete

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Re: sony kv-21mf1, need schem
« Reply #2 on: May 27, 2011, 08:52:09 PM »
you need exact value ng HOT nyan at orig dapat masyadong mataas talaga ang base voltage nyan

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Re: sony kv-21mf1, need schem
« Reply #2 on: May 27, 2011, 08:52:09 PM »

Offline ultrasonic™

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Re: sony kv-21mf1, need schem
« Reply #3 on: May 27, 2011, 09:00:28 PM »

tama tama do-it-youself muna
im always walking on the rain so that no one could see me crying




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Re: sony kv-21mf1, need schem
« Reply #3 on: May 27, 2011, 09:00:28 PM »

Offline pete

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Re: sony kv-21mf1, need schem
« Reply #4 on: May 27, 2011, 09:07:25 PM »
alam ko naman na kayangkaya ng TS yan hehehehe

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Re: sony kv-21mf1, need schem
« Reply #4 on: May 27, 2011, 09:07:25 PM »

Offline danyenz

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Re: sony kv-21mf1, need schem
« Reply #5 on: May 27, 2011, 09:39:29 PM »
mga master, naguguluhan ako sa design nit0ng unit, kc wlang xformer driver ang hot, shorted ang hot nya, npakataas ng osc s base drive ng hot. K1482 ang xsistor driver, 6vdc ang supply nito s drain at may nka series lng s drain n caps 47uf/160v papunta n sa base ng hot, strf6614 ang reg at cxa2131s ang jungle. Ngaun lng ako nkaincounter nitong wlng hdt ng hot. Bka mer0ng nkaexperience s mga master, share nmn at mapa nito. Tia
try mo muna analys circuit, at post ka kung ano problema dimo kaya.....tama sila hot section kya mo yan..bok
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Offline NORTH LUZON

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Re: sony kv-21mf1, need schem
« Reply #6 on: May 27, 2011, 09:55:18 PM »
mga master, naguguluhan ako sa design nit0ng unit, kc wlang xformer driver ang hot, shorted ang hot nya, npakataas ng osc s base drive ng hot. K1482 ang xsistor driver, 6vdc ang supply nito s drain at may nka series lng s drain n caps 47uf/160v papunta n sa base ng hot, strf6614 ang reg at cxa2131s ang jungle. Ngaun lng ako nkaincounter nitong wlng hdt ng hot. Bka mer0ng nkaexperience s mga master, share nmn at mapa nito. Tia

hot lang mostly ang nasisira dyan sis
ung b+ ang dapat sure ka
series muna ng ultrafast semi conductor protection sa flyback to col ng hot para iwas disgrasya sakaling may tama ang liupadlikod mo. resolder mo muna jungle at horiz ckt section then gamit ka 110vac sa input. simpol lang yan sis wag matakot
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Re: sony kv-21mf1, need schem
« Reply #7 on: May 27, 2011, 10:05:01 PM »
 paabang nga po....
"Kumain tayo at uminom,Sapagkat bukay ay mamamatay tayo"  CORINTO 15:32
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Offline envader

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Re: sony kv-21mf1, need schem
« Reply #8 on: May 27, 2011, 10:07:00 PM »
you need exact value ng HOT nyan at orig dapat masyadong mataas talaga ang base voltage nyan
agree ang ts nito, c5388 ang hot na k0ng titingnan sa datasheet ay iba s mga standard hot application, pero mghanap pa muna ako ng exact value, sinubukan ko kc sa ibang value ay parang pimipito ang chopper.
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Offline pete

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Re: sony kv-21mf1, need schem
« Reply #9 on: May 27, 2011, 10:15:05 PM »
kong mapapansin mo nasa 50 ohms ang reading (B red E black) ang normal na HOT pero sa c5388 nasa 200 ohms ang resistance.

nag-iisa nalang sa akin

Offline envader

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Re: sony kv-21mf1, need schem
« Reply #10 on: May 27, 2011, 10:17:36 PM »
135vdc ang b+, n0rmal naman ay0n sa err0r amp se135, simpre kc sa sop kpag sira ang hot ay minsan sa high osc ang salarin kya pg test ko sa base drive ay about 6vac at about 3vdc, kya ngtaka ako n0ng ngcheck ako ng ckt wla palang hdt ang driver, direct 6vdc ang pinanggalingan ng hot driver, mer0n palang gan0n...?
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Offline envader

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Re: sony kv-21mf1, need schem
« Reply #11 on: May 27, 2011, 10:25:44 PM »
kong mapapansin mo nasa 50 ohms ang reading (B red E black) ang normal na HOT pero sa c5388 nasa 200 ohms ang resistance.

nag-iisa nalang sa akin
siguro nga sir, pro ko pa nsubukang itest ang hot na yan. Sa isyung ito ay malamang na hot lng ang salarin, kailangan lng na exact value. Nagising na ako sa katutuhanan, hehe.
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Offline pete

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Re: sony kv-21mf1, need schem
« Reply #12 on: May 27, 2011, 10:30:42 PM »
ok sir update ka nalang

Offline danyenz

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Re: sony kv-21mf1, need schem
« Reply #13 on: May 27, 2011, 10:31:03 PM »
siguro nga sir, pro ko pa nsubukang itest ang hot na yan. Sa isyung ito ay malamang na hot lng ang salarin, kailangan lng na exact value. Nagising na ako sa katutuhanan, hehe.
ganyan din design ng ibang crt monitor bok
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Offline envader

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Re: sony kv-21mf1, need schem
« Reply #14 on: May 27, 2011, 11:13:02 PM »
hot lang mostly ang nasisira dyan sis
ung b+ ang dapat sure ka
series muna ng ultrafast semi conductor protection sa flyback to col ng hot para iwas disgrasya sakaling may tama ang liupadlikod mo. resolder mo muna jungle at horiz ckt section then gamit ka 110vac sa input. simpol lang yan sis wag matakot
110vac nga lng ang unit n ito sir, malaysia made, seguro hot lng ang salarin dito, mghanap pa ako ng exact value... Ngtaka lng kc ako sa design ng hot driver ckt nito... Sa palagay ko ok nmn ang base voltage nito na 3vdc.
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Offline envader

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Re: sony kv-21mf1, need schem
« Reply #15 on: May 27, 2011, 11:21:18 PM »
ganyan din design ng ibang crt monitor bok

ganon b sir? Ngaun ko lng alam sir, salamat s info.
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Offline envader

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Re: sony kv-21mf1, need schem
« Reply #16 on: May 29, 2011, 07:45:39 AM »
mga master, update ko lng po it0ng unit n ginawa ko, bali ang ginawa ko ay minodify ko na lng ang hot driver, nilagyan ko ng hdt, risistor at pinalitan ko yong fet nya, kinupya ko lng sa board n kumukuha ng supply s b+, wla kc mhanap ang may ari ng exact value ng hot,..so ok na ang unit, normal nmn ang init ng hot... tan0ng ko lng sa masters kong wla side effect ang ginawa k0ng ito? ngaun ko lng kc ngawa ito, hehehe.. sana di ma bj. salamat s lht
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Offline envader

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Re: sony kv-21mf1, need schem
« Reply #17 on: May 29, 2011, 07:48:06 AM »
sya nga pala, magpakape na ako...
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Offline danyenz

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Re: sony kv-21mf1, need schem
« Reply #18 on: May 29, 2011, 08:26:00 AM »
kung wala nman abnormality kang nkkta ok na yan...basta sunod natin principle ng horz osc,at tamang suply ng parts base sa data ok na yan... kht vert section na coconvert din..pwde nga tayo gawa seperate na pcb...kongrats na at sana nga wala bj..may pangontra sa bj diba mga master?
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Offline danyenz

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Re: sony kv-21mf1, need schem
« Reply #19 on: May 29, 2011, 08:27:59 AM »
yung parts pala orig erecord mo kc may replacement yan hanapin lng sa ecg or sa ntrnet..sakali mag bj alam mo yun orig parts
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Re: sony kv-21mf1, need schem
« Reply #19 on: May 29, 2011, 08:27:59 AM »

 

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