Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
As I sent that post, I realised I'd just put in a load of good transistors and caps into it so I'll not be skipping it.
I *hate* throwing out technology.
mickeydblv
New Member
Last Activity: 02-21-2013, 06:12 AM
Joined: 01-09-2013
Location: Essex
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Hi,
Selldoor, I was thinking about your suggestion of the tubes and how to test them and I came up with a plan. I'd mentioned I'd got two of the same monitors and had replaced the caps and touched up L101 on both and got two working monitors. These were to be thrown away at work.
The monitor I've been having trouble with (call it M2) I decided to take the power supply from M1 (the good monitor) and put it into M2. M2 did not do anything on powering up and does not display anything....Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
hi selldoor,
Please find images attached that I took outside to get all 'round lighting. Hopefully clear enough to be useful.
If other views might help, just ask. (the image poss_dadJoint.jpg - I can't recall the 15w iron touching that IC as I put in C201, but should those middle two leads be soldered together? The mirror one on the other side of the board isn't)
Cheers,
Michael....Last edited by mickeydblv; 02-16-2013, 08:51 AM.Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Hi selldoor,
I've not tried any other bulbs suggested in that test setup in the link. Am I right in thinking there are four in the display - or perhaps only two? All of them wouldn't have gone at the same time, surely...
I've not seen any details of what the voltages should be - no hints I can see on the board. I'll go through the tests in the regulators and post the results.
The other odd thing that's happened since I tested the voltages is that on power on, through...Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Well, as close to 1k as I could see on my little analogue meter. I'd zeroed before measuring and it looked spot on to me.Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Hi selldoor,
Thanks for the quick response! I checked with post #7 and can report that there is 1k resistance at each 8 & 9.
The power connector CN902 is on the right of the board with two rows of pins that rise from the power board, make an elbow to go horizontal then go into a ribbon cable to connect over to the display processor board.
The rows of pins are numbered thus with respective voltages. I'm a software engineer, but these don't look healthy:
...Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Hi All,
Been around the houses with this having changed 9 of the caps and replaced two of the first replacements, just to be sure.
Now I'm getting an image flash on switch on with front panel button and the blue light is lit continuously but no display. I can see the image in the LCD with a torch at an angle, so the display is working, just not illumination.
Replaced the following
O/P Filter
# 2 of 470 uF 16.0V 105 deg - done, replaced with Panasonic...Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Hi Selldoor, I'll give that a go and reply back. I did look over them again by I think I need to wet the joints a bit too.
Cheers,...Leave a comment:
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Re: Iiyama Prolite E481S goes dark after 1 second, blue power LED steady on
Hi All,
I've used these details to resurrect 2 ProLite E481s monitors and I've had them with my 22" to get 3 monitors. As I do web development with debugging screens, web page display and source in another, they're great. One has developed a new fault though :-(
All was fine for about 5 months and one started to turn itself off. Blue light power button still on. Sometimes it was cycling, going on and off quickly with a crackle from the speakers. No input to the speakers though....Leave a comment:
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