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IBS Store – Electronics Supplier
By Jestine Yong on June 22, 2010
Found another electronics suppliers from USA. Feel free to browse through the website by clicking on the photo
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Big Ben
June 23, 2010 at 5:45 am
hi Mr Yong,i have a Vivax crt tv, and fuse everytime blown.and i suspect on startup resistor and set digital multimetar tu autorange and show notting,if i set to to 20 or 200M ohm resistor show some reading .searching for color code on internet i find this resistor value is 445M Ohm, yellow yellow green blue green.
Big Ben
June 23, 2010 at 6:15 am
one thing more,i have samsung lcd tv,tv turn on but no screen and no sound
Big Ben
June 23, 2010 at 6:19 am
on this samsung tv i found some plastic resistor 5w r12k he show 0,maybe is shorted
admin
June 23, 2010 at 9:59 am
Hi Ben,
Resistor would not cause the fuse to blow. You may need to check on the bridge rectifier, direct replace the posistor or even check on the semiconductors.
jestine
admin
June 23, 2010 at 10:01 am
HI Ben,
You may need to check on the voltage that supply to the inverter IC. A bad mainboard may cause such problem.
Jestine
admin
June 23, 2010 at 10:03 am
HI Ben,
r12 may indicate .12 ohm and is a very low ohm resistor and your normal meter can't check that thus you are thinking it is shorted. You may need a Blue ESR meter to check a low ohm resistor value.
Jestine
Big Ben
June 23, 2010 at 2:03 pm
i will try it tomorow,
thanks anyway.
and something more, i have samsung 940n monitor and fet is blown and a can 't read it ,how can i know what fet tu place
admin
June 24, 2010 at 6:05 am
HI Ben,
Where is this fet located?
Jestine
Big Ben
June 24, 2010 at 8:48 am
i solved a problem on a samsung lcd tv,problem is with smd fuse on inverer board.on samsung monitor fet is little before transformer with five leggs. for vivax crt tv i waiting for parts,
Thanks
Big Ben
June 24, 2010 at 8:53 am
but for vivax crt,how can i test posistor and bridge recifier
Big Ben
June 24, 2010 at 8:59 am
and sommething more,i know i am borring, after i disconnect cable betwen two board fuse dont blow
admin
June 25, 2010 at 5:59 am
HI Ben,
Posistor can't be test and you need to direct replace and retest. For the bridge rectifier you can test the individual diode in the package using meter. All these testing i have compiled it into an ebook at Testing Electronic components dot com.
Jestine
admin
June 25, 2010 at 6:01 am
HI Ben,
May i know what two boards you are referring to? I believe one of the board that had cause the fuse to blow and you need to check on the semiconductors
Jestine
Big Ben
June 26, 2010 at 4:07 am
first power board (small board),second Mainboard (big board) with Flyback Transformer
Big Ben
June 26, 2010 at 4:09 am
is there any way to find what fet is located on samsung monitor,i ask for that information few questons before
admin
June 26, 2010 at 9:04 am
HI Ben,
If the power fet is located in power section then you can use K2645 as replacement.
Jestine
Big Ben
June 27, 2010 at 3:42 am
hi Yestine,i solved a problem in a monitor too (it works with fet k2645,only vivax tv problem not solved
Big Ben
June 27, 2010 at 3:42 am
Thanks a lot mr Yong
aelmomurilo
November 29, 2012 at 5:05 am
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