Help: Sony Trinitron KV-J21MF1 Blinking LED

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Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Sun Jun 23, 2013 10:08 am

Master, patulong ulit... pag-on ng unit nag-bblink lng... blink-pause-blink-pause... yan po ung code nya... unstable po lahat ng voltages... ng-pa-fluctuate.... check ko naman po mga diodes and resistors for short and open ok nman... try to resolderm but no luck... FBT kaya may tama nito? Wala kasi me ringer.... sabi ng tumer bigla n lng daw namatay ung unit... Ano po kya probs nito?

Eto po mga parts:

B+ Reg: STR S6707
Vert:  LA7830
Hot:  D1878
Jungle:  TDA8375A
9V reg: P009RE11

Tnx in advance!!

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Sun Jun 23, 2013 11:51 am

wla bang kataposan blick yan...c bord yata probs..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Sun Jun 23, 2013 11:55 am

try mo pake baba mona nang G2 f mang blick pa ren..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Sun Jun 23, 2013 11:56 am

naka protic yata yan dahel may ma taas na load..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Mon Jun 24, 2013 12:17 pm

oo sis... tuloy-tuloy pero may pause lng... try ko n lng mmya... tnx

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Mon Jun 24, 2013 4:39 pm

basta i try lang e baba ang G2 sis..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Mon Jun 24, 2013 4:41 pm

pake post ren elang voltahe ang G2 or yong lahat nang supply nang c bord..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by ultrasonic™ on Mon Jun 24, 2013 6:53 pm

agree ilan ang g2 mo sis?

kng kabisado nyu. try nyu disable ang mga prot..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by baddypepito on Tue Jun 25, 2013 8:54 am

Lenaren wrote: unstable po lahat ng voltages... ng-pa-fluctuate....


baka sa psu pa ito... hindi kc stable ang mga voltages mo... pls check or replace 1 ecap sa primary side,near regulator section. 1000uf/25v ata yon... hope this will help..!

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Wed Jun 26, 2013 3:02 pm

@DJFEL... na check ko ung C-Board, OK naman...

@Ultra... Di ko sis kabisado protection nito... wala pa me diagram... try ko n lng mga inputs nyo...

@Baddy... try ko rin po mamaya sis...

Thanks!!

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Wed Jun 26, 2013 5:42 pm

try mo sokaten ang G2 neto para ma laman naten alang volts ba yan parang ma taas yata f ma taas sa 600vts pake baba nalang sa 400 to 500v..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Thu Jun 27, 2013 1:20 pm

...update lang...

@DJFEL at Baddy nagawa ko po mga inputs nyo but no luck...

....bagong observation... fluctuating po ang lahat ng available voltages at first... pagkatapos po hindi na nag-flufluctuate maliban sa dalawang capacitor na may value na 25V 2200uF... ung isang capacitor po dito naka-connect sa isang pin ng 9V regulator...

Eto po mga readings...

B+ - 120V
G2 - 100V lang
Video - 120V

Supply going to 9V reg - 4 to 4.5V (fluctuating)
1 capacitor (25V 2200uF) - 12 to 13V (fluctuating)

... may diagram po ba kayo nito?


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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by ultrasonic™ on Thu Jun 27, 2013 2:50 pm


^ try mo sis ang chassis BG-2S

http://aelexian.4rumer.com/t405-sony-tv-chassis-bg-2s

on topic:
baka may heavy load... try mo munang e-isolate ang mga loads lalo na sa area na pnagdududahan

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Fri Jun 28, 2013 12:31 pm

Ok try ko n lng po...

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by dizon on Fri Jun 28, 2013 6:51 pm

baka may problema ang vertical ic master

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by danyenz on Fri Jun 28, 2013 10:06 pm

replace po 9v reg sirain yan pqoo9 ba yun?4pin?

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by ultrasonic™ on Sat Jun 29, 2013 5:16 pm

ayan hinatulan na ni dadi.. di na ata kailangan e isolate ang load ng 9V (^_^

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Sat Jun 29, 2013 5:57 pm

wla sa c bord to...try mona gawen mo yong ka sis bok..my ecap ren salaren nito or yong mylar cap po sa H-out yata neto yong kolay brown...parang sem yong na inconter ko sa sanyo yata nang up & down yong supply...

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Tue Jul 02, 2013 8:55 pm

Update lang...

@sis danyenz... pinalitan ko po ung 9V regulator ganun pa rin po... pinalitan ko rin e-caps sa paligid nito...

Tanong lang po kung ano ung standard value ng 1KV rectifier diode (RGP02-17 ung number)... tinest ko kasi out of circuit ung value nya nasa 1.65kohms... Ganito po ba ung reading nito?

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by ultrasonic™ on Fri Jul 05, 2013 7:13 pm

in reverse bias ba yan sis?
btw... mahina ba ang 1KV mo sa C board ?

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by plong on Fri Jul 05, 2013 7:24 pm

palitan u kaya ung pihitan ng screen  and fucos try mo na din check ung mga resistors  sa crt board....bka makatulong po ung idea ko.....

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Fri Jul 05, 2013 10:39 pm

na sa c bord pa ren ang sira neto..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by DJFEL on Fri Jul 05, 2013 10:42 pm

baka ma hina ang FBT neto na...hola lang..

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by Lenaren on Sat Jul 06, 2013 12:49 pm

@sis ultra... forward bias sis... infinity pag reverse reading... digital po gamit ko...

Try ko n lng po mga sinabi nyo pag dito na ang pyesa... as of now ns tumer kc ang pyesa...

Pag-on ng switch master may audible sound kang maririnig sa tube pero walang display...

Suyorin ko na lang ulit C-Board....

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

Post by plong on Wed Jul 10, 2013 3:06 am

kumusta na kya ung sony.....

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Re: Help: Sony Trinitron KV-J21MF1 Blinking LED

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