sony tv KV-21JDR1 shutdown problem

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sony tv KV-21JDR1 shutdown problem

Post by triac on Wed Dec 12, 2012 6:13 pm

mga sis patulong na naman po ako ito po yung problema ng tv na ito kapag sinaksak yung plug ON agad ang tv without touching the power button,ang napansin ko lang when i voltage check,ON ang 9V kaagad at nagvoltagedrop din agad.Ang lahat ng voltage ay stable except sa 9V.Ano po kaya sira nito?nag resolder na ako lahat,tapos bago na po yung vertical IC.salamat po sa lahat.. Question

voltage check:
B+-115V
12V
5V
9V ito po yung naka ON agad at nagvoltage drop din agad..

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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Wed Dec 12, 2012 7:24 pm

parang short or leak tranny..
double check nlng sis...

kng under protect nmn ang unit... try mung disable.. focus on system con pin4, 10 & 43
bka madali..

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Thu Dec 13, 2012 9:07 am

thanks sir ultra subukan ko po ito this coming saturday...

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Thu Dec 13, 2012 12:06 pm

elang second mamatay...parang naka protic yata ha..chik mo sis yong risistor 1/8 sa vertical malapit pin-amp or ziner diode...

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Thu Dec 13, 2012 1:01 pm

@DJFEL 2 seconds lng ito sis drop agad ang 9V.. salamat po sis subukan ko rin yang idea mo....

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Fri Dec 14, 2012 9:54 am

yong lahat nasa vertical soyod lahat sis

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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Fri Dec 14, 2012 4:08 pm

DJFEL wrote:elang second mamatay...parang naka protic yata ha..chik mo sis yong risistor 1/8 sa vertical malapit pin-amp or ziner diode...

agreed... pwde din ung 1/8w 1k-2.2k na nkaseries sa b+ to vert sect

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Sat Dec 15, 2012 9:21 am

@sir ultra paano po e disable iisa-isahin po ba?or sabay yung tatlo?

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Sat Dec 15, 2012 10:47 am

triac wrote:@sir ultra paano po e disable iisa-isahin po ba?or sabay yung tatlo?

pang iisahen mo sis..

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Sat Dec 15, 2012 10:49 am

para malaman mo kong sa-an nang trouble..sondin mo lang yong pin yong sinabe ky sis ultra..

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Re: sony tv KV-21JDR1 shutdown problem

Post by arkin on Mon Dec 17, 2012 1:39 pm

chk mo remote sensor[recieve]kng may nkaparallel na diode,chk f leak or shorted.automatic syang nag power on at shudown rin bigla,tama ba pagkaintindi ko?

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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Mon Dec 17, 2012 1:45 pm

agreed do the basic lagi.. kng kailangan isolate to minimize the suspect. gawin nlng (^_^

hlimbawa.. kng 9v ang di normal.. try unahin ang output,,, float output pin & observe.. pg same pa rin... ibalik ang output,,, input nmn ang subukan.. pg ganun pa din... tuktok ulit sa system con

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Tue Dec 18, 2012 10:09 am

@sir DJFEL salamat po sa pagsagot..
@sir arkin salamat po sa mag idea nyo..
@sir ultra salamat din po sa turo nyo...
shorted po yung D1208 na zener diode kaya nagshutdown sya..

update ko lng po ito:OK na po ang 9V di na po nagshutdown..ang problema ko ngayon walang sound at raster,tapos continous bllinking sya..may nakalimutan ako na sabihin sa inyo tinamaan po ito ni sendong kaya marami putik sa loob..

ito pa po ang nagawa ko:
heater:4V
G2:520V
RGB sa jungle out:1V sila lahat

may nasukat naman din po ako sa C-board hindi po exact mga sir di ko po kc naisulay

200V-180V
1000V-800+ po ito
9V-9v

may idea po ba kayo mag sir kung ano pa po dapat E check?salamat..


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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Tue Dec 18, 2012 1:42 pm

ayoz kng ganun sis... zener diode sa amp buffer (^_^

nalinis mo na bang maigi ang buong board?

khit ba sa TV/AV mode walang reaction? wla bang OSD at sound?
try mong taasan pa ng kunti ang G2 kung lalabas ba ang retrace line.
at kalikot lagi sa mga tacts sw.

try mo ding edisable ang IK return "pin25 ng jungle" baka mkatulong.
cxa1464as eto tama?

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Tue Dec 18, 2012 4:51 pm

parang ma baba ang G2 taasan mo to 600 to 700v..try mo lang..ma ok na yan..

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Wed Dec 19, 2012 9:25 am

@sir ultra malinis na po yung buong board,nakatulong po yung tinaasan ko yung G2,may raster na po magenta nga lang yung color at retrace,kaya sinuyod ko na ang C-board,may dalawang transistor na kinalawang at isang open na resistor,bibili pa po ako ng parts,D ko pa po disable yung IK palitan ko muna yung sirang parts sir ultra..Tama po kau sir ultra CXA1464AS
@sir DJFEL tinaasan ko po sir at malaking kasi may nakita na ako na raster very dim nga lang.

update ko po kayo lahat mga master kung ano ang magiging result nito..

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Wed Dec 19, 2012 11:13 am

okis..pang hominto yong red blink..okis na yan..600 to 700v yong g2 na yan..yong sinabe ni sis untra..linesen mo yong CRT sukit yong sa elalem..

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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Wed Dec 19, 2012 7:08 pm

my display na pala... no need to condemn the IK prot sis (^_^

eto nlng ang gawin mo dhil magenta ang kulay... focus on C board direct sub mo ang resistor r701 = 680ohm 1/2W common probz iyan ng Sony...

pg di mwala, e mean pg di tumino ang display color
isali mo na din ang dlwang 100K 1/2W

at wag baliwalain at iwala sa suspect ang G2/screen trim.. (^_^

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Thu Dec 20, 2012 10:54 am

@sir ultra gagawin ko po yan.salamat po..sir ultra ano kaya ang exact value ng r313 at r341?malapit po ito sa jungle at kinalawang na rin...
@sir DJFEL salamat po..

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Re: sony tv KV-21JDR1 shutdown problem

Post by DJFEL on Thu Dec 20, 2012 2:13 pm

wla ako mapa ka c na ri4rmat lahat...baka sis ultra my ron..

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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Thu Dec 20, 2012 4:23 pm

@sis triac based on the map ni yamashita

r341 = 33k
r313 = 1.2k / 1.8K di masxadong maaninag sa mapa...
scan lang kasi



eto full reference map: http://aelexian.4rumer.com/t239-sony-tv-model-mkii-jdr1-jsr1-jxr1

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Fri Dec 21, 2012 9:24 am

salamat po sir ultra..pwede ko bang palitan yung G2 trimmer ng ordinary trimmer,yung common po na walang knob?change value na rin po sya..

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Re: sony tv KV-21JDR1 shutdown problem

Post by ultrasonic™ on Wed Dec 26, 2012 11:43 am

^ yapz pwede yan sis..

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Re: sony tv KV-21JDR1 shutdown problem

Post by Hertz on Wed Dec 26, 2012 5:31 pm

i agree

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Re: sony tv KV-21JDR1 shutdown problem

Post by triac on Wed Dec 26, 2012 10:29 pm

salamat po master hertz at master ultra...

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Re: sony tv KV-21JDR1 shutdown problem

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