I've had good luck repairing the older CCFL-lit monitors and just picked up my first LED-backlit unit--an HP EliteDisplay E221. It powers on, green power LED stays lit, no picture from external source of system menus. I've visually examined for bad caps and, though there are a lot of no-name caps there, none of them exhibit signs of being bad.

Has anyone gotten their feet wet with LED-backlit units yet?

I just got, and fixed, one of these 32" monitor/HDTV displays. Its power supply died after power to the building was shut off and turned on again. There were several caps in the power supply with bulged tops, so I replaced all of them (except the really big ones) with high-quality Panasonic and Nichicon caps.

The monitor would power up then, but I noticed a strange issue. There's an area in the lower right corner of the display that's a couple of inches up and in from the panel's edges and measures about 1-1/2 inches in diameter that is okay when the display is first powered...

Re: Gateway FPD2185W



Postscript to this botched affair...

I took some other advice in this thread and finally disassembled the panel itself. (Note to anyone disassembling an LCD panel: make sure that when you pull out the plastic sheets between the LCD itself and the thick, clear lightboard material that you pull them all off at once, keep them together, and note which way you pulled them off and which side faces the back of the panel.) Two of the three tubes in the bottom CCFL strip had blackened ends; additionally, one of the return wires was blackened...

Re: Gateway FPD2185W



Anyone?...

Re: Gateway FPD2185W

An update and a question.

I parked this monitor for a while and went back to it last night. I'd pulled a set of fluorescents off another display that were good (but the LCD was cracked) to use for testing. To remind myself of the exact problem I powered up the FPD2185W.
- I could hear some distinct but faint sizzling sounds coming from the bottom edge of the LCD panel.
-The monitor would power up for approximately 8 seconds before the backlights turned off.

The spare backlights I'd pulled all had 2-pin connectors, and...

Re: Gateway FPD2185W



I should add that those lines are reminiscent of what you'd see if some columns in the panel were bad. I'm not convinced that's the problem, though....

Re: Gateway FPD2185W

I just picked one of these up and thought it might be an easy fix, thanks to the great info in this forum. I replaced all the electrolytics with the preferred DigiKey Panasonic units, and although the MOSFETs looked okay with no board discoloration I replaced those as well.

I still got the faint 'sizzling' sounds and the 'several seconds to black.' I reopened the monitor and decided to reflow the connections. I've never seen so many crappy solder joints on a board! The big thing I noticed was that, after sucking some of the bad connections clean...