JVC AV21QT17B standby lang

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JVC AV21QT17B standby lang

Post by louiex on Wed Feb 10, 2016 4:54 pm

Gud pm po mga master jan  patulong po ako sa inyo  kung paano ko ayusin ito tv ng kapatid ko. Wala pong display pero may power naman po. Pag pinindot mo yung on mga seconds 2 to 3 seconds click yung relay tapos yun lang ala na nangyari

CHASSIS-SCW 1516A
TDA12010H/N1F00-  ito ata jungle
STRW6554A- power  regulator ata pin 1 nasa 700v yung pin 4 papalo yung vom ko konti lang parang ala pang 1 volt tapos balik sa 0 volt
TT2202- hot
AN15526- vertical wala supply
24c16- memory  may 3.3v
PQ120RDA1SZ- ic sa secondary  nakalagay sa schematic 12v ang masukat na boltahe  pero pag on ko may 12v nga tapos bigla nawala yung 12v.

Patulong po mga master..Hindi po ako technician kakaintindi lang po ng kunti kakabasa dito at sa elab..


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Re: JVC AV21QT17B standby lang

Post by louiex on Wed Feb 10, 2016 10:39 pm

up lang po....

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Re: JVC AV21QT17B standby lang

Post by DJFEL on Thu Feb 11, 2016 2:54 pm

chik po sa secomdary supply pang ok lang ba yong b+ nito..nasa 125v supply pa ponta nang V+ ng fbt..

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Re: JVC AV21QT17B standby lang

Post by DJFEL on Thu Feb 11, 2016 2:55 pm

naka protic kasi yan...

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Re: JVC AV21QT17B standby lang

Post by louiex on Fri Feb 12, 2016 6:30 pm

ok naman po yung 125 volt sa paa ng 220/160volt ecaps sir...

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Re: JVC AV21QT17B standby lang

Post by Oscar on Sat Feb 13, 2016 10:22 am

palitan mo iyang PQ120RDA1SZ master. sirain ang mga ganyan

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Re: JVC AV21QT17B standby lang

Post by ultrasonic™ on Sat Feb 13, 2016 12:12 pm

hndi accurate ang tester mo sis kng umabot ng 700v ang drain source pin ng Main Reg.. disregard nlng yan..
focus muna in protect.. try disable.. pin 115 ng uoc.. or dahil smd yan ay hinang mo nlng ang R751 at R749 na puro 1k ohm para hindi madisgrasya.  ^_^
by the way dapat hndi naka pull down yan para mag activate ang Prot.. kung sa tingin hndi umuubra ang ang pag condemn apply 3v-5v sa pin na yan.. may safest kung daan muna sa resist na 10k-2K

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Re: JVC AV21QT17B standby lang

Post by louiex on Sat Feb 13, 2016 3:14 pm

salamat po sa sa mga sagot nyo mga master.. may suply pala ang vertical pag on ko tapos bigla nawala .. parang ang tagal mag on kase po pag on na bumagasak na po supply ng vertical.. tapos blink blink na po yung led nya...

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Re: JVC AV21QT17B standby lang

Post by louiex on Sun Feb 14, 2016 2:34 am

master ultra di ko kaya ihang yung pin 115 maliit masyado baka madisgrasya nga kamo tapos R751 at R749 smd rin po e.. bago nga pala mag blink yung led nya may naflash na blue sa display...

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Re: JVC AV21QT17B standby lang

Post by Electro on Sun Feb 14, 2016 6:37 am

baka na nakablue background yan master. lagyan mo muna ng antenna master.

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Re: JVC AV21QT17B standby lang

Post by Electro on Sun Feb 14, 2016 6:39 am

Oo nga pala master. cut mo na lang ang track gamit cutter blade para mag jumper ka na lang pag ibabalik mo na

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Re: JVC AV21QT17B standby lang

Post by louiex on Sun Feb 14, 2016 1:08 pm

master electro nilagyan ko antena my lumabas picture seconds lang nawala agad sabay blink ng led nya.. di ko pa nahinang yung sinabi ni master ultra bili muna ako ng magnifying glass masyado maliit yung mga track di ko masundan baka mali ma tanggal ko...

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Re: JVC AV21QT17B standby lang

Post by louiex on Mon Feb 15, 2016 11:35 pm

update lang po mga master sinundan ko yung payo ni master ultra tinanggal ko yung dalawang resistor ayun gumana sya pero pinatay ko agad with in 1 minute dahil sa kakatingin ko sa mapa protect pala ito so ibig sabihin wala na itong protect. at sa takot ko baka lalo masira pinatay ko muna ang unit. tapos tanong muna uli dito kung ano na kasunod nito saan ko hahanapin yung dahilan kung bakit nagnagprotect. patulong po mga master...

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Re: JVC AV21QT17B standby lang

Post by Hertz on Tue Feb 16, 2016 12:19 pm

Ok lang ba ako ang sumagot? Correct ko lang Sir with respect with Sir Ultra. r749 ay hindi kasali sa Protect Sense path. only r750 at 751 lang. ibalik mo ulit ang r749 louiex. Ngayon isa isahin mong ibalik para madali mong malaman saan nagmumula ang nagpapaprotect. sa madaling salita. kabit turn on. pag gumana ay next kabit naman. hanggang sa hindi na mag on. kong ano ang huling kinabit ay nandun ang salarin. halimbawa. start with C770, pang huli iyong r751. kong sa r751 hindi siya nag on ay sundan mo yan hanggang dadalhin ka niyan sa Xray at OCP/OVP section.



madali rin malalaman saan sa dalawa nanggaling ang trigger. tanggalin ang q591 at q572. mag O on yan ulit. gayahin ang estilo na ginawa noong una para mas mahuli mo ang salaring pyesa. ikabit ulit ang transistor. simulan sa q591. isunod naman ang q572. o vice versa. halimbawa nanggaling nga sa q591 ang protect salarin agad ang nag leak na parts gaya ng q591, d592, d591, d593 at mga rx at cx. sa ovp o ocp naman ay ang q572, d571, q571, rx at cx na napapaloob sa green circle

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Re: JVC AV21QT17B standby lang

Post by DJFEL on Tue Feb 16, 2016 12:32 pm

yan...may mapa na...sondan m mo nalang yan...

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Re: JVC AV21QT17B standby lang

Post by louiex on Fri Feb 19, 2016 9:20 pm

maraming salamat master hertz sa pagsagot mo.. sensya na ho ngayon lang ako nakabalik dito ngayon lang kase ako nakaload.. ok napo yung tv kagabi ko lang nakita yung salarin sa tagal kong kakatitig sa mapa ay nakita ko rin... sa vertical po ako dinala ng protect.. 22/50v po yung salarin...

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Re: JVC AV21QT17B standby lang

Post by louiex on Fri Feb 19, 2016 9:28 pm

dito po oh...

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Re: JVC AV21QT17B standby lang

Post by louiex on Fri Feb 19, 2016 9:29 pm


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Re: JVC AV21QT17B standby lang

Post by Hertz on Sat Feb 20, 2016 10:14 am

louiex wrote:maraming salamat master hertz sa pagsagot mo.. sensya na ho ngayon lang ako nakabalik dito ngayon lang kase ako nakaload.. ok napo yung tv kagabi ko lang nakita yung salarin sa tagal kong kakatitig sa mapa ay nakita ko rin... sa vertical po ako dinala ng protect.. 22/50v po yung salarin...

congrats kong gayun. my mistake hindi ko nasali ang vertical sa suggestion. I thought ok siya kasi buo iyong picture at wala kang nabanggit na nakitaan na suspection fault sa section na yan. Again Congrats

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Re: JVC AV21QT17B standby lang

Post by DJFEL on Fri Mar 18, 2016 8:07 am

ok na pala..ecap probs pala...naka protic..

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Re: JVC AV21QT17B standby lang

Post by Electro on Fri Mar 18, 2016 12:46 pm

congrats master. ayos na pala

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Re: JVC AV21QT17B standby lang

Post by louiex on Mon Mar 21, 2016 8:13 pm

salamat po sa inyong lahat...

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Re: JVC AV21QT17B standby lang

Post by Hertz on Mon Mar 21, 2016 11:10 pm

welcome at congrats uli. Salamat din sa pag share ng mga repair mo

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Re: JVC AV21QT17B standby lang

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