Question about Computer Monitors

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Monitor problem actually,I am now using another monitor and i have no problem with my computer,i use it everyday in my cellphone repair shop. But I want my 17' mitsubishi flat crt monitor back,because i'm not comfortable with this 15' IBM crt monitor. I've already changed the horizontal transistor with the same value(C5587)because it is shorting but it doesn't work and theres no changes.so please please.. help me. i want to repair it my self.

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To do an internal repair on a CRT is beyond my level of expertise.
I would leave repairs like that to those that do know. I've heard too many horror stories about what can happen if you don't know your way around the inside of a CRT.

Posted on Aug 20, 2008

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Model M17ANA shuts off intermediatly Turns on ok but after a few seconds shuts off then back on again.


The issue you describe is a power supply gone bad. Actually it is a capacitor inside the PS that is now defective (it may be more than one). This seems to be a frequent problem with this particular monitor as I have personally had the same issue with one a owned.

Unfortunatly there is no good solution as there are basically only two options available to you.

1. Find an 'electronics /computer shop' that will remove the PS and repair it.
2. send the monitor to Star-Logic for repair.

The basic issue with either scenario is that the cost to repair may be more than the unit is actually worth. For instanse, you can purchase a new 20" LCD monitor for less than $90 form places like newegg.com.


I hope this helps you in some way.

Good Luck!

Oct 20, 2011 | Star Logic 17" LCD Monitor

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When the bad caps (not completely gone but have high ESR) will start working when heated up, the ESR goes down, that is one of the trick I have been using for 30 years to locate bad caps by heting them with hair dryer.
I am surprised that 3 shops cannot find and fix the problem.
As you can see in my albums, most failure are due to bad caps. Can you poat the pictures of the board?

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

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hi, these are exellent monitors. i have repaired and made good profit on these. there is about 8 capacitors on the main board that go bad. all are 470uf 25 volt. if you have good knowledge of soldering, you can perform this repair. even broken, these monitors go for 100 dollars on ebay. contact me back if you want more info on how to repair yourself.

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The reason I had asked if you had tried a different monitor was to determine if it was the monitor or the computer that actually had the problem. That wasn't clear in the first question.
A computer that is having issues will cause the same symptoms you described.
Repairing CRT's is beyond my level of expertise. When I get into a situation like this, I would just replace the monitor. Sorry I couldn't have been more help.
I stopped using CRT's when the price of LCD's dropped.

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