HELP: Sanyo TV ST-21CE1 blinking LED

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HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Sun Jan 20, 2013 2:16 pm

Mga master patulong naman.... Nag-bblink po ung LED at slow rate... Mga voltages sa primary at secondary lahat nagpa-fluctuate...

Voltages:
B+ --- 101V to 135V
Video --- 135V to 151V

Reg: W6753
Vert: LA78040N
HOT: TT214D

Ano po mga probs nito???



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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Mon Jan 21, 2013 11:35 am

try to isolate muna.. ang horizontal kng mwawala ba ang panginginig...
pg hindi.. balik ulit sa PSU side... while nakahinang ang eeprom..
focus on bias ckt & feedback after na replace ang mga secondary caps mo... pwdeng peripherals lng iyan.. zener/signal diodes sa bias ckt or my probz na tlga ang main Reg mo (strw)...

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by DJFEL on Mon Jan 21, 2013 12:40 pm

psu probs..my lick yata na diode yata at saka risistor..

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Sun Jan 27, 2013 6:36 pm

Master paano po ang tamang pag isolate ng horizontal trans? Sensya na para makasigurado lang baka magkamali ako eh... newbie pa kasi...

Mster DJFEL ok naman po mga diode at resistor sa PSU side...

Try ko pinalitan ung memory pag-on ko nag-standby lang... nung press ko power sa remote ganun nag-blink ulit...

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by kaholito on Mon Jan 28, 2013 9:47 am

hi puin mo ung mga pyesa baka may nainit.shorted

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Mon Jan 28, 2013 6:50 pm

Lenaren wrote:Master paano po ang tamang pag isolate ng horizontal trans? Sensya na para makasigurado lang baka magkamali ako eh... newbie pa kasi...

hinang/float mo lng sis ang Collector Pin ng H-out (center Leg)
or pwde rin ang B+ pin or Col pin ng FBT... pili ka nlng kng saan sa tatlo ang Hiyang sau (^_^

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Hertz on Tue Jan 29, 2013 10:51 am

pwedeng may leak na high voltage ceramic capacitor ito
double check na rin

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Tue Jan 29, 2013 5:08 pm

Salamat po mga master.... susubukan ko po lahat mga sinabi nyo.... update ko na lang po kayo....

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by baddypepito on Wed Jan 30, 2013 8:31 am

meron ding mga panahon na ang regulator talaga ang sira nito.... kung meron kang pang sub na maayos talaga, sub mo nalang

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Wed Jan 30, 2013 12:25 pm

Master pinalitan ko rin po high voltage ceramic cap ganun pa rin po....

May nakita me na zener diode (D1009)... shorted... nung pinalitan ko ganun pa rin po... nag-bblink pa rin at fluctuating ang mga voltages... Master may diagram po ba kyo nito (AC6A chassis)?

Master ultra nung ini-hang ko ung collector out nung HOT naka-standby lang po at di na po nag-bblink at nag-flufluctuate mga voltages.... Ano po kaya master problem nito?

Master Baddy nasubukan ko rin pong palitan ung reg at opto nya bago ko nakita ung shorted diode...

Master ano po pwedeng masira pag shorted ang diode na yun? Kagabi ko lang po kasi nakita yun?

Sensya na po dami me mga tanong... Salamat!!!

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Hertz on Wed Jan 30, 2013 5:20 pm


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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by kaholito on Wed Jan 30, 2013 9:08 pm

mukhang sira ang fb nito.

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Thu Jan 31, 2013 1:33 pm

Lenaren wrote:Master pinalitan ko rin po high voltage ceramic cap ganun pa rin po....
Master ultra nung ini-hang ko ung collector out nung HOT naka-standby lang po at di na po nag-bblink at nag-flufluctuate mga voltages.... Ano po kaya master problem nito?

kng nwala ang fluctiation w/ respect na buo ang H-out
mukhang sira na nga ang FBT... "heavy load na xa"
pacheck mu nlng muna para mgkaalaman.. o direct sub kng my pamalit kau...

regarding sa Map.. DL mu nlng ang bigay na link ni Hertz

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Thu Jan 31, 2013 1:35 pm

+1 nga pala hertz for taking over (^_^

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Thu Jan 31, 2013 5:36 pm

Salamat po mga masters!! Mabuhay po kayo!!!

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Fri Feb 01, 2013 5:31 pm

Master isang indication din ba pag sira na FBT pag walang spark kang maririnig sa CRT pag idi-discharge mo sya?? i dont know

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Sat Feb 02, 2013 11:46 am


^ nko di natin agad yan masasabi.. kasi mkakaroon lng ng stored Voltage ang picstube pg gumana ng matino ang FBT
kng baga Cguradong "my binabatong 24KV sa Anode Cap"
in short nkapag oscillate ang flybak...

now sa status mo mlaki ang chance na ang fbt ang heavy load jan.. try mu nlng munang e check ang resistance ng primary winding bka mbaba na masxado..

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by Lenaren on Sat Feb 02, 2013 4:56 pm

Master sensya para po sa kaalaman ko.... Paano po master ang pag-check ng resistance nito? scratch i dont know

Salamat!!!

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by DJFEL on Sat Feb 02, 2013 8:57 pm

sub mona...

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by DJFEL on Sat Feb 02, 2013 9:00 pm

na alaro mo lahat naka paligid po sa FBT neto...

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by DJFEL on Sat Feb 02, 2013 9:04 pm

pake replace po to sis..baka maka tolong..parang yan probs..x-out section yan...


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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Wed Feb 06, 2013 4:31 pm

^ agreed sop din dpat na chinicheck ang mga HV caps

Lenaren wrote:Master sensya para po sa kaalaman ko.... Paano po master ang pag-check ng resistance nito? scratch i dont know

Salamat!!!

set mo lng sa Rx1 ang tester mo.. then tutukan ang B+ pin ng FBT at Ground pin. dpat wla khit kunting palo yan. pg meron palitan mo na ng FBT (^_^

kng di pa masxadong kabiso ang B+ pin ng FBT. pwde mung gawing bases ang + termnal ng secondary ecaps... sundan nyu lng ang copper clad.. kng anong pin ng FBT ang dinugtungan nito ay yun ang B+ pin ng flybak mo

btw.. para di na rin masxadong mhirapan at maiwasan na tanggalin tlga ang FBT sa buong board.. pwdeng B+ pin lng ng FBT ang ihinang/hung/float. cguraduhin lng na wla na tlgang nkakapit



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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by james on Wed Feb 06, 2013 7:46 pm

Yan ba ang karaniwang sira ng fbt shorted?

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by ultrasonic™ on Thu Feb 07, 2013 3:04 pm


yapz.. ndi lng shorted ang pwdeng maidentify natin jan kundi ksali din ang Partial burnt Prim winding

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

Post by DJFEL on Fri Feb 08, 2013 10:43 am

sem ba to yong B+ my 3 risistor ponta nang ABL..

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Re: HELP: Sanyo TV ST-21CE1 blinking LED

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