LCD monitor power led blinking
+2
Hertz
Lenaren
6 posters
AELEXIAN EMPIRE :: Computer and Digital Device Repair (Computer Technician Board) :: PC Hardware Problem
Page 1 of 1
LCD monitor power led blinking
Help po... may inayos po akong LCD monitor Hanns-G brand... sumabog po ung power IC at pumutok ung fuse... nung napalitan na pag ON nag-bblink lang power led.. kasabay ng blink merong display naman na nalabas... saan pa kaya ang may tama nito?... first time ko po mag-repair ng LCD.. ok lang po ba i-ON ang unit na di nakakabit ung LCD mismo? ...voltage check sana ako sensya na po.... tnx
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
puede yan kong hindi naka enable ang protection niya.
Hertz- Admin
- Posts : 1822
Join date : 2010-08-12
Age : 43
Location : Cagayan De Oro City
Re: LCD monitor power led blinking
pa post ng display na naaaninag?
Hertz- Admin
- Posts : 1822
Join date : 2010-08-12
Age : 43
Location : Cagayan De Oro City
Re: LCD monitor power led blinking
buo master ang display... kaso nawawala kasabay ng blink kada segundo... pag nakasalpak sa cpu makikita mo ung actual na activity kaso papatay patay lang...
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
sori di pala masyado buo... pero makikita mo po ung display nya ng kaunti... sensya na po
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
TOP245YN po ang IC... e2 po board...
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
my ESR ka ba sis... ? try mo check ang mga ecaps,, kng wla nmn go for direct sub.. check din ang mga zener diode sa mga secondary load side
ultrasonic™- 24V BATTERY
- Posts : 4475
Join date : 2010-08-19
Age : 38
Location : Davao City
Re: LCD monitor power led blinking
chek din rectifier diode sa secondary side,baka my leak.
arkin- D Battery
- Posts : 446
Join date : 2011-12-02
Re: LCD monitor power led blinking
pahabol..since ccfl pa yan,chek mo rin ecaps sa inverter...
arkin- D Battery
- Posts : 446
Join date : 2011-12-02
Re: LCD monitor power led blinking
.... salamat po master sa inputs
....master arkin d2 rin po ba makikita sa board na pi-nost ko ung ecaps? check ko na lang po ung mga sinabi nyo... tnx
....master arkin d2 rin po ba makikita sa board na pi-nost ko ung ecaps? check ko na lang po ung mga sinabi nyo... tnx
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
yap!dyan nga..sa tingin ko yong dalawang green ecaps.chek mo lng.
arkin- D Battery
- Posts : 446
Join date : 2011-12-02
Re: LCD monitor power led blinking
^ agreed.. IP board na kasi yan ts... pinaghalong power supply at inverter ckt
ultrasonic™- 24V BATTERY
- Posts : 4475
Join date : 2010-08-19
Age : 38
Location : Davao City
Re: LCD monitor power led blinking
Update lang... eto po result nung check ko mga parts...
...ung diode na to (legend A) meron pong reverse reading na 400k.... OK lang po ba to master?
...ung ecap na to (legend B) 1 side lang meron reading sa 100K range ng aking multimeter... OK lang din po bato?
...ung brown cap na to rated 47J 1KV paano ko po ito ma-check using analog multimeter
...ung diode na to (legend A) meron pong reverse reading na 400k.... OK lang po ba to master?
...ung ecap na to (legend B) 1 side lang meron reading sa 100K range ng aking multimeter... OK lang din po bato?
...ung brown cap na to rated 47J 1KV paano ko po ito ma-check using analog multimeter
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
ay sori po double post... paki-delete n lang po ung isa... tnx
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
Re: LCD monitor power led blinking
dpat out of board ka mag test nyan sis... para accurate
abwt sa diode (legend A) normal na my mkukuha kang reading in reverse bias lalot kng FR (fast recovery diode yan). btw kng duda ka jan.. pwde mo replasan mo na ng ibang diode... pg no improvement balik mo ang orig
abwt sa cap (legend B) depende yan sis sa value ng cap mo at pag range ng Ohmmeter mo.. kng bibase natin sa basic
kng mgtitest tayo ng capacitor lalot kng sa analog
dpat pasok tayo sa ganitong Range
RX10K and above = 0.01 uF to 1uF
RX1K = 1uF to 47 uF
RX10 = 47 uF to 1000 uF
RX1 = 1000 uF and above
minsan sa maling range palang ma mimisdiagnose na tau...
bantayan lng natin ang galaw ng needle/pointer
paalaala lng. di masxadong accurate ang pgGamit nito lalot kng kulang tau sa experience.. meron kasing mga caps na machacharge at nadidischarge pa rin khit leak nato
kya minsan mas recommend kng gawa tau ng ESR ^_^
abwt sa diode (legend A) normal na my mkukuha kang reading in reverse bias lalot kng FR (fast recovery diode yan). btw kng duda ka jan.. pwde mo replasan mo na ng ibang diode... pg no improvement balik mo ang orig
abwt sa cap (legend B) depende yan sis sa value ng cap mo at pag range ng Ohmmeter mo.. kng bibase natin sa basic
kng mgtitest tayo ng capacitor lalot kng sa analog
dpat pasok tayo sa ganitong Range
RX10K and above = 0.01 uF to 1uF
RX1K = 1uF to 47 uF
RX10 = 47 uF to 1000 uF
RX1 = 1000 uF and above
minsan sa maling range palang ma mimisdiagnose na tau...
bantayan lng natin ang galaw ng needle/pointer
paalaala lng. di masxadong accurate ang pgGamit nito lalot kng kulang tau sa experience.. meron kasing mga caps na machacharge at nadidischarge pa rin khit leak nato
kya minsan mas recommend kng gawa tau ng ESR ^_^
ultrasonic™- 24V BATTERY
- Posts : 4475
Join date : 2010-08-19
Age : 38
Location : Davao City
Re: LCD monitor power led blinking
phabol.. abwt sa 471J range mo pnkamataas sis tapoz tignan mong maiigi ang needle kasi kunti at saglit lng yan gagalaw
ultrasonic™- 24V BATTERY
- Posts : 4475
Join date : 2010-08-19
Age : 38
Location : Davao City
Re: LCD monitor power led blinking
agree din ako ky ultra voltage ka rin,baka sakaling my mkita kang idea kng san flactuating yong voltage.
arkin- D Battery
- Posts : 446
Join date : 2011-12-02
Re: LCD monitor power led blinking
voltage chek yon.sori nagmadali kc
arkin- D Battery
- Posts : 446
Join date : 2011-12-02
Re: LCD monitor power led blinking
nsubukan u n bng sukatin ang supply ng secondary (12v & 5v) kung nagvavary rin kasabay ng pag blink nyan?
wellroidarab- AAA Battery
- Posts : 2
Join date : 2014-08-11
Age : 41
Location : Bulacan
Re: LCD monitor power led blinking
ano updit neto sis..
DJFEL- 24V BATTERY
- Posts : 1780
Join date : 2012-11-21
Age : 42
Location : SIUIJOR
Re: LCD monitor power led blinking
malapit na ma boo yong ESR ko...updit ko lang dito sa forom..
DJFEL- 24V BATTERY
- Posts : 1780
Join date : 2012-11-21
Age : 42
Location : SIUIJOR
Re: LCD monitor power led blinking
master kinuha na pala to ng may-ari... bili na lang daw sya ng bago... sayang nga eh....
Lenaren- C Battery
- Posts : 294
Join date : 2012-02-26
Location : Iloilo
AELEXIAN EMPIRE :: Computer and Digital Device Repair (Computer Technician Board) :: PC Hardware Problem
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum