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Old 04-02-2017, 03:28 AM   #841
e76nystrom
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Default Re: Hanns-G HG281D, LCD Monitor no power

Thanks for the help. I will order those and give it a try.
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Old 10-11-2017, 11:54 AM   #842
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Default Re: Hanns-G HG281D, LCD Monitor no power

Hello. I have a HG281D that works fine for a few minutes then the power starts dropping out and screen goes black... no visibly damaged components or bloated caps, seems to be in line with the experiences others have had. I wish to replace the capacitors. After checking my actual boards (PSM217-404-H-R & PM549DA3 M06 ver5.0A) and reading the recommended caps lists and bad caps lists I came up with the following replacements that are in stock at Digikey.

Main Board (PM549DA3 M06 ver5.0A)
Code:
Qty	Cap	Voltage	Dia	Hei	Rep Part
3	470	16	8	12.6	EEU-FM1C471L
12	10	16	4	6	EEA-GA1C100
3	100	16	6.5	6	
2	100	16	5	12	EEU-FR1C101
I don't see a reason that they had to use the two different sizes of 100uF caps, so I was just going to replace them all with the 5x12mm ones. The eBay/Amazon cap repair kits for this board that I have found do the same thing.

Power Board (PSM217-404-H-R)
Code:
Qty	Cap	Voltage	Dia	Height	Labels			Rep Part
1	1	50	5	12	c205			50YXF1MEFCT15X11
1	1	100	5	12	c606			UEP2A010MDD
2	2.2	50	5	12	c114, c203		EEU-FC1H2R2
1	10	35	5	12	c108			UPW1V100MDD1TD
1	10	50	5	12	c406			EEU-FC1H100L
3	22	35	5	12	c111, c603, c707	EEU-FC1V220
1	22	400	12.5	21	c601			UCS2G220MHD
1	47	50	6.5	12	c605			EEU-FC1H470
1	150	420	20	40	c3			450QXW150MEFC18X40
2	470	10	8	12	c506, c702		EEU-FM1A471
2	470	25	10	16	c306, c502		EEU-FM1E471
1	470	35	10	20	c403			EEU-FM1V471
2	1000	10	10	16	c505, c701		EEU-FM1A102B
2	1000	25	12.5	20	c301, c302		EEU-FM1E102
1	1000	35	12.5	20	c401			EEU-FM1V102B
google docs spreadsheet with clickable digikey part links https://docs.google.com/spreadsheets...Sa-c6i80S9MSGA

I am fine with the soldering and repair work for the monitor, but I was hoping that someone could please look over my component choices? And if necessary point out the error in my ways? Thanks!
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Old 10-11-2017, 01:38 PM   #843
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Default Re: Hanns-G HG281D, LCD Monitor no power

That list looks alright, acabtp.

Like you mentioned, there is no point to use two different sizes of 100uF caps if size constraints are not an issue. So it's perfectly okay to go with 5x12mm.

That said, if it was me, I'd streamline the order even further.

For example, all those different 10 uF caps, I'd just go with 10uF/50V/5x12 mm Panasonic FC for everything. Being low ESR and bigger in size, they should also last longer.
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Old 10-13-2017, 11:11 AM   #844
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Default Re: Hanns-G HG281D, LCD Monitor no power

Quote:
Originally Posted by momaka View Post
That list looks alright, acabtp.

Like you mentioned, there is no point to use two different sizes of 100uF caps if size constraints are not an issue. So it's perfectly okay to go with 5x12mm.

That said, if it was me, I'd streamline the order even further.

For example, all those different 10 uF caps, I'd just go with 10uF/50V/5x12 mm Panasonic FC for everything. Being low ESR and bigger in size, they should also last longer.
sounds good. hopefully i'll report back in a week or two with a fixed monitor. thank you!
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Old 10-16-2017, 01:35 AM   #845
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Default Re: Hanns-G HG281D, LCD Monitor no power

Quote:
Originally Posted by acabtp View Post
google docs spreadsheet with clickable digikey part links https://docs.google.com/spreadsheets...Sa-c6i80S9MSGA

I am fine with the soldering and repair work for the monitor, but I was hoping that someone could please look over my component choices? And if necessary point out the error in my ways? Thanks!
Thanks for posting the nice spreadsheet, was putting together a similar order myself.
What's up with the bipolar capacitor at C606?
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Old 10-18-2017, 10:45 PM   #846
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Default Re: Hanns-G HG281D, LCD Monitor no power

Quote:
Originally Posted by Capt. Cap View Post
Thanks for posting the nice spreadsheet, was putting together a similar order myself.
What's up with the bipolar capacitor at C606?
ugh, looks like a selection error on my part. thanks, good catch.
slim pickings for 1uF 100v caps.

couple options:
https://www.digikey.com/product-deta...0-1-ND/4320420
https://www.digikey.com/product-deta...1360-ND/755876

i would lean towards the nichicon, but the UCC has better high freq ripple current. neither have ESR data. decisions decisions...
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Old 10-18-2017, 10:57 PM   #847
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Default Re: Hanns-G HG281D, LCD Monitor no power

after a little more research and checking the board, i think that
https://www.digikey.com/product-deta...719-ND/5051848
can probably squeeze in there and do the job with much better lifetime rating. i'm going to order this and the UCC as a backup in case i can't fit it.
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Old 10-19-2017, 06:58 PM   #848
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Default Re: Hanns-G HG281D, LCD Monitor no power

Quote:
Originally Posted by acabtp View Post
ugh, looks like a selection error on my part. thanks, good catch.
slim pickings for 1uF 100v caps.
Yeah, I looked at that 1μF 100v first to see what you were going with because of the slim pickings
In another thread I started about the HG281D I asked about using a film capacitor there, but I think the question got lost in that wall of text.

In all likelihood, they chose to use an electrolytic there because it was cheaper, but I don't understand the circuit at all, so I'm hesitant to get fancy with the replacements.
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Old 09-07-2018, 12:25 AM   #849
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Default Re: Hanns-G HG281D, LCD Monitor no power

For what it's worth, a polypropylene film 1μF 100v capacitor has been working fine in place of the electrolytic.
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Old 03-11-2019, 10:33 AM   #850
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Default Re: Hanns-G HG281D, LCD Monitor no power

So my monitor died back in july when a power outage happen right after it refused too power on no power light at all.. So i sat it aside till today and took it apart.

Tested the fused first and that tested fine and i noticed when apart sometimes i can get it too turn on but the light will come on the screen will also come on than go out 2secs later and repeats and than dies and its hard too get it too do it again..

Than something stupid happen... The inverted cable hit the power supply on the back of it and a big spark happen and i get no power at all from the psu...

Tested the fused and yep its blown.... it also left burnt spot in that area too which is by the fuse.. Now i wonder if its even worth it anymore? Heres a pic. I cleaned it up which came fine but as you can see its missing some solder on the joint of carli mpx40/100/21 yellow cap tho it might be fine tho.

http://prntscr.com/mweq7o

I was going too see if i can replace the C603,606 and 707 caps as Mishannya did with his cause he had no light either. And probably going too need a t4.0a250v Brown square fuse.... Now the other thing it did burn the video connector some but it didn't touch the metal contacts just burn some plastic.. Oh is it possible too just jump it with a wire for the fuse for now too see if the powersupply at least powers up?


Oh forgot too add back in 2014 which i also posted on this site i had too replace c80 and c83 on the main board cause the buttons was wacky and i couldn't adjust the brightness or anything and sometimes the screen would go on and off. But the blue light always stayed on. So the problem im having would be related too the psu caps now?

Last edited by gordesky1; 03-11-2019 at 11:02 AM..
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Old 03-11-2019, 06:36 PM   #851
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Default Re: Hanns-G HG281D, LCD Monitor no power

Whoops sorry about just putting a link for the pic. Didn't see the manage attachments on my first post... But yea as you can see by that solder point that's were it got shorted at and around that area had black on it but it cleaned up fine but did melt the solder by that joint which im hopeing didn't cause any damage... The fuse went out really fast tho probably in a sec and than it lost power. That's were the lcd inverted connector hit and melted some of the connector too but seems like ony the metal part sense the wires and connections look fine on it.

I would order one of those psu cap kits for the psu and also a new fuse but just worried if it cause any more damage:/
Attached Images
File Type: jpg IMG_20190311_111856.jpg (549.8 KB, 6 views)

Last edited by gordesky1; 03-11-2019 at 06:43 PM..
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