Proview pl713s; fixing surge damage

Posted on 2007-08-03
Medium Priority
Last Modified: 2011-09-20
I've a Proview pl713s LCD monitor that has suffered damage from a power surge. I opened the monitor and all the circuit boards look clean (no burns).  However, when it's given power, the power light flashes fast and continuously, but the screen stays black (with or without a signal feed).  The VGA cable connects directly to the same circuit board as the ribbon cable going to the center of the LCD screen, and this circuit board is also connected to another circuit board that has components similar to those in a PC power supply unit (and to which the power cable connects). From that circuit board, 8 wires (4 connectors) connect to the side of the LCD screen.  
The first circuit board has a microcontroller and a has sticker labeling it with 01FM713B J52-001
The second circuit board is stamped by Mirage Electronics Co. and has a sticker listing a few numbers also.
Would the surge damage have stopped at the second circuit board (maybe power is simply not getting to the LCD panel) or could there be damage to the first circuit board and possibly the microcontroler also?
Just wondering what I should try to replace to get it working without buying another monitor. Also, none of the wires that I can see are burnt or melted.  If it would help, I can provide pictures of the parts in question.
I've also posted this question at http://www.fixya.com/ThreadView.aspx?prdid=394574&thid=178232
Question by:nbanyan
  • 3
  • 2

Accepted Solution

cococan earned 2000 total points
ID: 19663576
When power surge happens, any components may burn in a device.  99.9% of the time, there is no visual clue as to where the damage is.  In most cases, the damage is in the power supply section.  That is where the power is reduced down to the 5 to 24 Volts depending on the equipment.  The first thing I would do is to test the power and see if the power is supplied to the device from outside (line power of 110V in North America and 220V in Europe and most of the world).  If there is power coming in to the device, than measure the power coming out of the power supply assembly.  Measure the output and see if there is 5V, 12, or 24V etc. coming out.  If there is power for the device, than a IC damage is the most likely scenario.  In that case I don't think I can help you.  There is even a chance that your machine was somehow hit by lightning.   If the power suply is the problem, than that is easy.  Search the internet for thousands of options in sizes and shapes for the needed part.

Good luck

Huseyin K.

Expert Comment

ID: 21496238
Hello nbanyan,

I was wondering if there is any updates on this issue?



Author Comment

ID: 21644015
No updates yet.
I'm going to try to replace 6 capacitors that have blown, but have yet to obtain all the needed capacitors yet.  Also, school has kinda held me up a bit.  I will give an update once I've replaced the capacitors.

Expert Comment

ID: 21644047
Thank you and good luck

Author Comment

ID: 21748141
I ordered the capacitors from DigiKey and was able to solder them to the power board fairly easily.  However, I made a critical mistake.
After partially assembling the monitor, I plugged it into my laptop (which was on) then pluged the monitor into the wall.
The outlet sparked and my computer stopped working and started smoking visibly. And the monitor still doesn't work.
My dad thinks that the capacitors became charged when I plugged the monitor into my laptop and that they where somehow grounded and therefore discharged when the monitor was plugged in.

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Buying a new television today is nothing like it used to be. There are so many new features and terms, it's barely comparable! I hope to clarify a lot of the terms and give a little help for the buyer in this article! Most retailers have both a "…
There are more than twenty applications to turn Webcam into home and  small business security. Let's discuss one of the most easy ones to install. If you do not have already installed the drivers to the pc for your webcam, you'll need to do that …
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…
Loops Section Overview
Suggested Courses

850 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question