19" lcd monitor powers briefly displays then goes blank Dell E193FPc.LED indicator stays solid green .Changed out cords and verified same issue on another desktop
First place to check will be the power supply section, look for bad caps with bulging top first, post back what you see so we can guide you more, see example of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
Inverter/pwr: http://www.lcdrepair.us/e193fpc-inverter-power.html
Testimonial: "Excellent information posted along with visual aids for comparison "
Next step is to check the DC voltages on the caps next to the heatsink on the right of the picture, there should be 5vdc and about 12vdc on the caps, more likely you may have good power supply since you do see. The problem can be bad IC/transistors in the inverter circuits, or worst case will be the lamps. I use my inverter lamps tester to verify that I do not have bad lamps to narrow down the problem. It will be hard for use since you do not have access to spare parts for troubleshooting down to component level. I wish I can help you more.
The two rectangular parts (.75"W x 1.25"L) are high votltage transformers for the back light lamps, the lamps (4) are connected to the four white connectors at the top edge of the board. I am not sure about the condensation. The lamps are inside the LCD panel that you cannot see.
Please get the number printed on the transformer so I/you can get the pin out of the transformer from : http://lcdparts.net/Transformer3D.aspx
This is what I found about the high voltage transformer: here are the pictures of the transformer I have: http://s807.photobucket.com/albums/yy352...
You should also check the four transistors that are between the transformer, and also the large two blue caps close by. I hope this help.
That will be good if you can send me the old board. Ping me [email protected]
Was the board expensive?
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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 pictures: 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.
Replacement board: http://www.lcdrepair.us
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Took monitor apart looking for bad caps split capacitors did not see anything that was obvious.Also checked solder points on board for broken or heated points
I am thinking more likely then not something on the inverter board is bad but will visual check the tubes if possible.I will have to disassemble monitor again not a big deal.I will update again provided I find something.Should have brought my DVOM home forgot it at work.
After furthur inspection it appears that a component looks like it contains condensation on the upper righthand of the inverter.I am not certain what the component is but almost looks like a transformer.Looking at the top of the board there are two of these.My apologies for not being able to tell you specifically what the component is.If you check the inverter pic in your link you will see what I am talking about but it definitely looks like condensation.
I believe the component that i am looking is one of the inverter lamps
yep that would be it the one on the right side looks like moisture is inside the plastic cover of the transformer.Strange it seems but definitely appears that way
Any idea what the resistance should be.I could compare the good one to the bad and see what kind of difference there is
80LL15T-7-DN G 515
I want to thank you order and replaced inverter board works like new.Would like to possibly send you the old one to see if you can locate the actual problem with it.
the board was 50 with shipping so the repair was certainly cost effective.
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