Author Topic: aiwa tv-cn203nh (Read 245 times)

zeldeni · « **on:** June 12, 2012, 11:54:21 AM »

Mga bossing pa help naman... meron akong aiwa tv-cn203nh nagsu-switch off pag mayrong signal sa av at sa tuner pero kng wlang raster at wlang input sa av oks sya..as soon na may activity yung picture tube off agad.. piro kng osd lng ng video ay oks na oks sya... thanks in advance...

Philippine Electronics Forum · « **on:** June 12, 2012, 11:54:21 AM »

judaspriestcody · « **Reply #1 on:** June 12, 2012, 12:13:13 PM »

try mo check abl section...baka may open na resistor

Philippine Electronics Forum · « **Reply #1 on:** June 12, 2012, 12:13:13 PM »

zeldeni · « **Reply #2 on:** June 12, 2012, 12:56:58 PM »

oks try ko po...thanks... update ko lng po kng ano ang result.. thanks again

Philippine Electronics Forum · « **Reply #2 on:** June 12, 2012, 12:56:58 PM »

mcleod · « **Reply #3 on:** June 12, 2012, 06:07:03 PM »

ts pa-check di konting tiyaga kung andito model ng tv mo kasi may permanent design modification sa maraming model baka sakali andito tv mo para iwas back job. kung di mo makita model ng tv mo dito ay good, ibig sabihin walan sablay sa design.

http://www.scribd.com/doc/4220184/Aiwa-TV-Service-Technical-Information#

Philippine Electronics Forum · « **Reply #3 on:** June 12, 2012, 06:07:03 PM »

bluetooth · « **Reply #4 on:** June 12, 2012, 07:03:09 PM »

pa sub, mukhang madugo ito ah, now ko lang nlaman na may gantong trouble.

Philippine Electronics Forum · « **Reply #4 on:** June 12, 2012, 07:03:09 PM »

zeldeni · « **Reply #5 on:** June 13, 2012, 08:04:01 PM »

add ko another info ng aiwa tv-cn203nh trouble, pag nag-off sya kng may input sa av at may raster...kng taasan ko yung screen adj sa flyback lilitaw ang line na parang sira ang vertical.. may heater voltage sya at hihina ang ilaw ng heater...oks ang mga output sa secondary ng flyback at ang mga supply hindi bumababa sa normal pag nag-off sya... thanks

zeldeni · « **Reply #6 on:** June 13, 2012, 08:29:36 PM »

na try ko na troubleshoot abl section same parin try ko palit 1k resistor papuntang abl ng jungle ic..

zeldeni · « **Reply #7 on:** June 13, 2012, 08:54:42 PM »

mga master gudpm, another info para sa trouble ng aiwa tv-cn203nh ko.. try ko bypass yng circuit para sa digital switch nya ksi dalawa ang power nito yng 1 direct ac na switch yng 1 standby (channel +/- on) pag on ko gling standby oks steady na sya pero after second nag o-off yng system d na macontrol yng mga buttons pero kng nkaset sa may channel na my plabas makikita paring pero lumiit ng kaunti yng horizontal... narealize ko na parang ang system ang salarin..

mcleod · « **Reply #8 on:** June 13, 2012, 09:01:22 PM »

try mo post mga components ginamit diyan sa tv mo.

or check mo 5 volts regulator or kung may spare ka diyan direct substitute mo na. check mo din mga transistor/s mo near tuner section. nagdirect sub ka ng xx uf / 250 v ecaps? na-check mo na high value resistors near fbt? wag mo check na kabit 2 paa, desolder mo isang paa ng resistors bago sukatin; kung nasa tolerance. at ang important,dapat na-check mo na diodes near tuner.

bluetooth · « **Reply #9 on:** June 13, 2012, 09:59:26 PM »

ts, gawin m muna mga advice nila, tas pag ganun pdin, try mo sa eeprom..

zeldeni · « **Reply #10 on:** June 13, 2012, 11:57:03 PM »

mga master try ko lahat advice nyo...i think sa system ic talaga ang probs...cguro yng ic talaga or yng supply ksi try ko bypass yng supply nya components nya transistor as 5v+ reg. substitute ko ng ka7805 ic reg sometimes oks sya d namamatay pro minsan hirap i on di katulad ng bago ko palang na troubleshoot pagpress ko ng ch+/- off agad..update ko kyo ulit sa result... thanks po...

bluetooth · « **Reply #11 on:** June 14, 2012, 08:44:33 AM »

kung hnd makuha sa eeprom, hula nalang, vertical...

NORTH LUZON · « **Reply #12 on:** June 14, 2012, 10:34:51 AM »

abl problem
babaan mo screen voltage kung mag off pa

TBG · « **Reply #13 on:** June 14, 2012, 01:01:31 PM »

try mo palit ng memory,,,,,,,

brucetech · « **Reply #14 on:** June 14, 2012, 02:16:54 PM »

ts check ng maigi ang vertical at hor. sec mo

Philippine Electronics Forum · « **Reply #14 on:** June 14, 2012, 02:16:54 PM »

Author Topic: aiwa tv-cn203nh (Read 245 times)

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