Author Topic: sanyo 14kx2- standby mode (Read 1106 times)

charlie · « **on:** December 08, 2009, 01:55:20 PM »

jungle la7681a
regulator c4429
vertical la78040n

problem: satandby mode

pag "on" yung mga voltage sa chopper or secondary ok naman kaya lng sandali lng

i replaced vertical ic same problem

any one who can help me salamat po

Philippine Electronics Forum · « **on:** December 08, 2009, 01:55:20 PM »

Vaounsi · « **Reply #1 on:** December 08, 2009, 02:40:54 PM »

hang mo hot mo po, then observe b+ kung shut down pag on mo po... pag shut down , PS problem mo, pag hindi nagshut down secodary PS poblem mo po.. para malamn lng natin kung saan prob ng shut down..

Philippine Electronics Forum · « **Reply #1 on:** December 08, 2009, 02:40:54 PM »

edz · « **Reply #2 on:** December 08, 2009, 02:59:32 PM »

bro makesinget lang baka makatulong ako sau,ung test prod mo ilagay mo sa fly bck 24V DC tapos On mo sa remote kong may high voltage ba.kong mayron man tapos mawala agad ung suppply bro.sure ako cra ang resistor.

Philippine Electronics Forum · « **Reply #2 on:** December 08, 2009, 02:59:32 PM »

charlie · « **Reply #3 on:** December 08, 2009, 08:26:24 PM »

Quote from: Ac-Dc on December 08, 2009, 02:40:54 PM

hang mo hot mo po, then observe b+ kung shut down pag on mo po... pag shut down , PS problem mo, pag hindi nagshut down secodary PS poblem mo po.. para malamn lng natin kung saan prob ng shut down..

bro eto yung mga voltage sa secondary ng chopper when power sw. is sw. on

always B+voltage 125v

always B+voltage 18v

always B+voltage 24v ( standby voltage ) sw. to supply vertical output ic

hang ko line papunta ng fb shut down pa rin
hang ko yoke same pa rin

Philippine Electronics Forum · « **Reply #3 on:** December 08, 2009, 08:26:24 PM »

Vaounsi · « **Reply #4 on:** December 08, 2009, 08:34:59 PM »

ayon sa iyong statement na hung muna b+path papuntang flyback shut down pa rin.. ibig sabihin primary PS problem mo, focus ka ngaun sa PS.. check ecaps, diode, regulator ic..replace regulator para malaman mo agad..

Philippine Electronics Forum · « **Reply #4 on:** December 08, 2009, 08:34:59 PM »

ultrasonic™ · « **Reply #5 on:** December 08, 2009, 08:40:03 PM »

c4429 ang reg. familiar sa akin yan hah...

paki check nyu nga yung signal diode malapit sa vertical section i forgot the exact part number location..
kalimitan short yan... nakapakamot ulo din yan sa akin

baka kasi pareho.. try nyu lng wla nmng mawwla (^_^),V,,

Philippine Electronics Forum · « **Reply #5 on:** December 08, 2009, 08:40:03 PM »

Philippine Electronics Forum