You are talking about the Veiwsonic VP230mp right!
The supply is 12 volts at 7.5 amps.
Got some here we wit bad smps.
One had a bad PFC chip and the other has an intermitting start up.
Solution is trash the inside ps and hook up an externat one. Any 12 volt-10 or 15 amp ham supply will do.
Inside you have to trace out the main dc connection and solder to these and supply it wit outside supply.
If anyone knows the failure cause on the internal SMPS chime in.
We have detected one faulty chip (DIL8 box ref:13843 from ??)... The problem is that we didn't find any supplier for it.
There is another faulty chip that we found (DIL8 box ref:LM358D from Philips)... This one is easy to get on the market.
Do you have any supplier to propose for this component? Do you have spre component already?
Thanks by advance.
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Probally the failure is due to the inverter power supply. Take a flashlight and shine it to the screen, if you can see an image, then the problem is with the power supply. The failure could be blown capacitors or transistors. An electronics repair shop should be able to fix it.
If you have a blinking power light and no display even when you first power up the unit then its not in power saving mode. The blinking power light indicates a failure of the filter capacitors on the power supply board. This is a very common problem with LCD monitors after a few years of service. The power supply can be repaired by just replacing the defective filter capacitors. Here is a picture of the power supply board with the bad caps circled in yellow and below that is a link to a full repair guide showing how to open the unit and what to replace including a full parts list.
I have a similar problem on my Planar PD470; power supply failed after about a year and a half. I heard that their HDTV power supplies had a higher than normal failure rate. I have someone working with the company to resolve, but I'm not optimistic... Bah Humbug. How long have you had your set?
rtillett, May not be "power save" problem! Possible internal component failure causing "black screen of death" symptom. What is "date of manufacture" from rear of unit? Unit could be 4-5 years old. retrevo .com lists as time to retire and buy new. You should see some video clips at YOUTUBE that show DIY owners/technicians that successfully refurbish these e172, e173 displays to help you decide to spend $20 or trade for new $200 (new unit) wide screen display. Also spand some time reading and following links you find in the fixya profiles of "budmrtn" "buddymc" "12fixlouie" that will help you decide fate of your e173fp unit. Please rate this response AFTER you do your research here and at YOUTUBE. After you discover the common power supply capacitor failure problem that plagues the entire lcd monitor / tv industry you will then be in a much better position to make decision. 12fixlouie
If you are going to DIY and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed Viewsonic and all others monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net Capacitors kit: http://lcdalternatives.auctivacommerce.com/
The 920nw did have a 3 year warranty on the unit but they will be out of warranty now. The flickering power light is an indication of a failure in the power supply board. When the board fails it can't start up correctly and the power shuts down over and over so you get the blinking light and no display. This is a very common failure point on all LCD monitors after a few years of use. There are parts called capacitors on the power supply board and they filter the output power. When they fail the power is not properly regulated and the power supply shuts down and tried to restart so you get the flashing. Here is a link to a repair guide that will show you how to dis-assemble the unit and then what to look for and replace to get it back up and running again.