Author Topic: Share here your troubleshooting,Tip or repair experienced. pc monitor,TV,vcr etc (Read 26999 times)

lhan · « **Reply #300 on:** June 10, 2011, 11:21:20 PM »

Quote from: nelson/igan on June 10, 2011, 08:23:01 PM

kanina ko lang nagawa
unit = sanyo new model flat screen
trouble symptoms= nagbublue after 1minute ,sound ok
observation = mababa ang collector voltage ng blue drive transistor pag nagblue na screen
palit ako ng transistor resistor ganun pa rin ,duda ko tube na nagsoshort ang blue cathode sa ground ng heater
solution =cut ko sa crt board yung ground at supply sa heater tapos suppy ako panibago sa heater na tap ko rin sa flyback.

ganun may leak ung cathode to heater kaya bumababa n supply sa blue drive,,,

Philippine Electronics Forum · « **Reply #300 on:** June 10, 2011, 11:21:20 PM »

taqui · « **Reply #301 on:** June 11, 2011, 06:34:02 AM »

ok na ba unit sir nelson? parang weak signal, my blue back ground yta ang unit kaya nag blue, syempre tataas ang blue

Philippine Electronics Forum · « **Reply #301 on:** June 11, 2011, 06:34:02 AM »

nelson/igan · « **Reply #302 on:** June 11, 2011, 07:58:30 AM »

nd weakang signal gawa nang ok ang sound ,saka may retrace ang pagkablue nya ,pag nagblue sya pukpuk ko yung neck ng tube nagnonormal ang picture kaya tube talaga.nag soshort sa ground ng heater yung blue cathode...

Philippine Electronics Forum · « **Reply #302 on:** June 11, 2011, 07:58:30 AM »

taqui · « **Reply #303 on:** June 11, 2011, 08:30:51 AM »

ahh ok tnx sa pag share..

malinaw na

Philippine Electronics Forum · « **Reply #303 on:** June 11, 2011, 08:30:51 AM »

Roland · « **Reply #304 on:** June 12, 2011, 10:55:41 AM »

common sa mga bagong flat screen sharp ang masira ang tube.

Philippine Electronics Forum · « **Reply #304 on:** June 12, 2011, 10:55:41 AM »

lhan · « **Reply #305 on:** June 12, 2011, 12:47:53 PM »

Quote from: Roland on June 12, 2011, 10:55:41 AM

common sa mga bagong flat screen sharp ang masira ang tube.

dahil lagi naka blue scren pag ala signal kaya mas madali buhay kaysa sa red/gren,,, tama kaya theory ko tukayo,,,

NORTH LUZON · « **Reply #306 on:** June 12, 2011, 09:19:45 PM »

Quote from: lhan on June 12, 2011, 12:47:53 PM

dahil lagi naka blue scren pag ala signal kaya mas madali buhay kaysa sa red/gren,,, tama kaya theory ko tukayo,,,

tama ka insan
meron pala paraan para maalis ung carbon between heater and cathodes

tikbalang · « **Reply #307 on:** June 26, 2011, 05:55:35 PM »

Quote from: rigor37 on May 11, 2011, 04:43:53 PM

DEVANT LCD TV
Model: 26DL29

Trouble: Nagpoprotect..pag-On ng main switch, iilaw ang red pilot light then blue light then Shut Off na.
Nawawala lahat ng supply sa secondary ng chopper pag nagshut off.

Cause: Leaky c849 sa secondary ng chopper...

Eto po ang location ng capacitor

naayos ko yung DEVANT 22DL29 gawa nito. same symptoms as op. 3 leaky capacitors ang nakita ko, pinalitan ko lahat with the same value (470uf/25v). di ko napicturan pero almost same location at board.

salamat.

Roland · « **Reply #308 on:** June 27, 2011, 01:48:53 PM »

Quote from: lhan on June 12, 2011, 12:47:53 PM

dahil lagi naka blue scren pag ala signal kaya mas madali buhay kaysa sa red/gren,,, tama kaya theory ko tukayo,,,

di naman siguro, aware naman siguro ang designer na laging blue ang screen kapag alang signal, baka sa pagmanufacture ng tube ang problema.

pero baka tama din ang theory mo ROLANDO

ronelex · « **Reply #309 on:** July 03, 2012, 05:35:26 AM »

pa.subscribe po dito, backreading muna

cableguy · « **Reply #310 on:** July 03, 2012, 10:20:57 PM »

baguhan pa po ako d2. mga sir. need help supra tv model stv1495w goldstar ang laman nag a auto tuning sia black in white pa.

Philippine Electronics Forum · « **Reply #310 on:** July 03, 2012, 10:20:57 PM »

Philippine Electronics Forum