Having problems with your ViewSonic VX922 19" Monitor Flat Panel ?

Viewsonic VX922 monitor no power

\015 Hello, I have seen that the VX922 has a problem with the PS capacitors when the green led starts blinking. I have a VX922 but it doesn't power any led. I checked the power supply and I found two 470uF capacitors blown (dommed). I replaced them bud still no life signals. I decided to replace two more 330uF capacitors and one more of 10uF but still nothing. \015\012I have seen that some of these power supplies have more capacitors and more regulation diodes. Mine has only the electrolitic capacitors I have replaced and one more big of 100uF 400V that is the only one I haven't replaced but is not blown.\015\012I've checked the 12 volts and the 700VAC voltage and there is nothing.\015\012\015\012My PS has also two heat sink one straight attached to a with a three pins IC? with the following info:\015\012CET\015\0125410Z\015\012CEF04NG\015\012I have no idea what is it and the board is a bit brown close to it so I suspect could be burnt. The other heat sink is "L" shaped and has a three pins Shotki diode? MBR10100CT close to two 470 uF capacitors I have replaced.\015\012\015\012Any Idea of what is the first three pin component I mentioned?\015\012\015\012There are diferent types of power supplies for this monitor?\015\012Any sugestions of what I should replace?\015\012\015\012I uploaded a picture of my PS:\015\012\015\012http://2.bp.blogspot.com/_RrAfhxxyDV8/SpvLgAJczxI/AAAAAAAAAAM/jlC1FJWv5RM/S220/PIC-0005_3.jpg\015\012\015\012Thanks a lot in advance\015

Answers :

I had the same problem with my VX924. The two 470uFx25V was blown, and the output diode was in short circuit. I also noticed that the 33R SMD resistor (to pin 6 of SMD IC) was opened. After replaced these parts, the monitor works great.
I dont know if you got this problem solved. but mine died VX924 died lastnight, I replaced 3 caps on the power board but i examined the power board and i found that on the underside the CEF04n6 Transistor was pretty burned up. and when i went to take the solder off to remove the component it, the solder just broke. so i cut the legs off of it and just pulled it out. i am having trouble finding a replacement. i will let you all know if i find one and i'll share the part number.
So far I know it is a part made by CET out of China. and it's a 600v 2.5a RDS, N-Channel Transistor.
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