Question about Elo TouchSystems Computers & Internet
I have a dozen of these 1725L monitors in use. I have had power supply and inverter problems that I have fixed with new caps or boards. I have 3 now that come on just fine but go off in a few seconds. I can not see lcd picture with a flashlight either. I replaced the invertor the power supply and the main control board with known working boards and all still have the same issue.
If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.
Posted on Apr 23, 2014
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Posted on Jan 02, 2017
SOURCE: Replacing Inverter Board
I did some poking around and only found a few places that sold inverter boards for this monitor. Ebay has one that sells for about $80: http://cgi.ebay.com/Backlight-Inverter-for-Gateway-FPD1930-LCD-Monitor_W0QQitemZ160070918225QQcategoryZ174QQrdZ1QQssPageNameZWINQ3aPOST0Q3aRECOQ3aBINQQcmdZViewItem I wasn't able to find any specific instructions posted, however, taking a typical LCD panel apart and replacing the board shouldn't be too difficult. The only hard part is not getting shocked, which is why this is not a job for the typical user. Anyway to disassemble the typical LCD you remove the pedestal from the back of the LCD then remove the screws around the back of the LCD, remove the back and look for the inverter board. Typically it is covered with a metal shield; again the hard part is knowing how to correctly handle the parts. Considering you can buy a new 17" LCD for $120 to $150 (and has a 1 year warranty) you might want to consider investing in a new monitor instead. If you have any other questions let us know, otherwise please don?t forget to rate this posting.
Posted on Feb 06, 2007
SOURCE: BenQ FP51g LCD monitor
There is a Switch transistor to power on -off the hi voltaje for lights. Check 15V from power source go to this transistor colector, Using soldering Iron, make a juntion between colector and emiter, to short 15V to Hi voltaje power. I´m fixing 10 monitor the same trouble. I will remove a liter transistor.
Late I will post here the driver transistor number, and the replace number transistor I will use.
Pictures , etc. Best Regard
Posted on Oct 25, 2008
butterx99, First thing you should do is surf the net for pics of swollen electrolytic filter capacitors. You will find many, many examples. You will also need to inspect both the switch-mode-power-supply and the inverter boards for failed thermally cracked (fractured) solder joints. I will try to attach a pic of what you would be looking for. You hav failed to mention how many printed circuit boards are in your monitor. Some have only 2, others have 3. If only 2, then the "inverter circuit is part of the SMPS board. Did you take pics so that you can remember where everything goes when you need to reassemble? Let me know by email if you don't get a the pic through fixya. Bye for now. I'm louie12fix on fixya or firstname.lastname@example.org
Posted on May 14, 2009
Run a monitor aelf test.... Remove the monitor cable from the back of the tower... and see if it run self test.... also a install the driver for the monitor
Posted on Aug 03, 2009
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