Author Topic: sanyo ST-21SY1Z power off/vertical line help! (Read 1930 times)

johanna · « **on:** June 06, 2010, 12:28:27 PM »

masters help... pag power on mag shutdown sya bago sya mag shutdown makita mo pa sa screen na may guhit sa gitna...nagpalit na ako ng ecaps at vertical ic...no luck pa rin..flyback na kaya ito mga master...

Philippine Electronics Forum · « **on:** June 06, 2010, 12:28:27 PM »

pEN DoTA · « **Reply #1 on:** June 06, 2010, 12:30:38 PM »

cold solder at horizontal driver transformer or at horizontal ckts, pati rin sa P.S section.

Philippine Electronics Forum · « **Reply #1 on:** June 06, 2010, 12:30:38 PM »

starex · « **Reply #2 on:** June 06, 2010, 01:05:59 PM »

check mo voltages sa vertical section
may kulang dyan

Philippine Electronics Forum · « **Reply #2 on:** June 06, 2010, 01:05:59 PM »

pEN DoTA · « **Reply #3 on:** June 06, 2010, 03:13:37 PM »

hang muna mga loads @ horizontal section then measure B+.

Philippine Electronics Forum · « **Reply #3 on:** June 06, 2010, 03:13:37 PM »

starex · « **Reply #4 on:** June 06, 2010, 07:44:46 PM »

vertical line pala sa gitna
baka naman single horizontal line ang tinutukoy mo sir TS?

kung vertical line nga yan,check the width section
kung horizontal line naman check vert section
hope this will help you mr TS

Philippine Electronics Forum · « **Reply #4 on:** June 06, 2010, 07:44:46 PM »

jWalker · « **Reply #5 on:** June 06, 2010, 08:23:57 PM »

subukan mo out crt board tapos power mo kung tutuloy mag power... try mo lang

johanna · « **Reply #6 on:** June 07, 2010, 06:31:26 AM »

nagawa ko na lahat mga suggest nyo master...any sugestion pa...

pEN DoTA · « **Reply #7 on:** June 07, 2010, 06:34:44 AM »

no improvement po ba? nag resolder ka na ba?napalitan nba lahat ng ecaps?

pEN DoTA · « **Reply #8 on:** June 07, 2010, 06:35:14 AM »

more details pls.....

starex · « **Reply #9 on:** June 07, 2010, 07:48:59 AM »

pakilinaw ang tanung mo sir TS
vertical o horiz line ?

pete · « **Reply #10 on:** June 07, 2010, 10:13:40 AM »

common trouble po ng sanyo yan madalas sira ang vertical IC kong nag palit na kayo ng IC orig po ba? check resistor baka galing supply baka open na.

resolder all bad contact

johanna · « **Reply #11 on:** June 07, 2010, 12:48:22 PM »

galing n kc sa ibang technician sabi ng may ari...dating sira guhit(horizontal line) ngayon nagpalit ng vertical ic ganon pa rin.... dinala sa akin ng itest ko mag off n..at makita mo bago sya mag off n may guhit sa gitna...suyudin ko pa vertical section mga master...tnx..

starex · « **Reply #12 on:** June 07, 2010, 01:10:12 PM »

nasa vert ckt na ang trouble ng unit mo sir
pakicheck nalang ung vert line ng deflection yoke mo.
i also agreed with sir pete,absence of vert supply causes power shut off due to protection ckt.
and also dont forget to replace eeprom kung sakali ok ang vert deflection mo
gudlack

danny · « **Reply #13 on:** June 18, 2010, 11:41:41 AM »

Sino po ang may service manual nitong sanyo na ito

baka pwede pong pa share naman

pki pm lang po ako

salamas

nath630 · « **Reply #14 on:** June 18, 2010, 02:43:00 PM »

sir pwede ba malaman ang mga IC gamit ng board na yan..?
nyan..?

danny · « **Reply #15 on:** June 18, 2010, 03:07:49 PM »

D2634-REGULATOR
LC863440W
LA76818A
LA4267

thnx

iyan daw mga ginamit

nath630 · « **Reply #16 on:** June 18, 2010, 04:35:36 PM »

ano vertical Ic ?

nath630 · « **Reply #17 on:** June 20, 2010, 08:09:52 PM »

boss danny nakakuha ka na manual?
ganto ba board..?

YGPM

DSM_elektronix_shop · « **Reply #18 on:** June 20, 2010, 09:27:26 PM »

malamang stv9302a ginagamit nian sir... may supply b ang vertical B+ sir?? dapat masukat mo 24v from rectifier power supply chopper ...check mo limiting resistor 1ohm 1/2 watt kalimitan nakakabit tapos nakaseries sa diode...dun ka magsukat ng supply kung may supply ba??reply ka po kasi nakagawa na po ako ng ganyan kalimitan e caps lang yan ehh sa b+ kasi minsan hindi regulated supply nun kaya bumabagsak kaya nag auauto shut off

pEN DoTA · « **Reply #19 on:** June 21, 2010, 07:28:35 AM »

complete voltage testing muna kung saan ang nawala dun ka magconcentrate.

Philippine Electronics Forum · « **Reply #19 on:** June 21, 2010, 07:28:35 AM »

Author Topic: sanyo ST-21SY1Z power off/vertical line help! (Read 1930 times)

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