Re: Hanns-G HG281D stuck on self test color mode?
Oh i see yea that does make sense than. Maybe why its running so hot even when off its the caps throwing everything off.
Im hopeing thats the case anyways hehe...
gordesky1
Senior Member
Last Activity: 10-14-2020, 11:22 PM
Joined: 06-12-2014
Location: PITTSBURGH
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Re: Hanns-G HG281D stuck on self test color mode?
Yea i should be getting the caps sat from what it says so i guess we see if those will get it back and going well i hope it does lol..
And yea i figured i was doing something wrong with the ground while testing for the regulators i thought the tab on the rear of it was the ground lol.. But yea i never tested a regulator before hehe.
I just find it weird why the main board is still getting power at least to the regulator and the main chip when its turn off.. Would any of the caps be causing that...Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
k did the voltages from the psu connector 6 pin and the 3 pin going to the mainboard.
when its off and plugged in.
3pin
Red is 4.89v to-4.90v black is 0.
When its on its red 2.98v-3.00v. black is 4.70v
the 6pin reads. when off just the red wire is getting 4.92v
when on black wire 3.11v brownish is 0.03v green is 5.11v red is 4.85v and i think the next one next to it is orange? that's 0.02v and than yellow is 11.97v.
...Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
Yea im kind of kicking my self right now ordering too soon which 30mins after i did it i thought to myself maybe i should've wait to see if the psu needed caps.... lol
Ehh if i need more caps i don't mind spending a bit more. Hell i almost spent 18$ on those amazon caps which would've been a big mistake lol..
Will check the psu voltages tonight and see what they bring up.
For the regulator i use the big tab on the rear for ground. Unless that's the wrong way testing them?
...Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
update just ordered the caps with the ones you suggested
total was 9.89$ so really ony a 10$ lost if it still has a issue worth it in my opinion if it gets it going or get the cap issue on the main board out of the way lol...
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Re: Hanns-G HG281D stuck on self test color mode?
Got some pics of the psu. yea does seem like it uses good cap brands from what i see.
I tested the voltages again for the regulators. And the middle pins while touching the large tab its ony getting 0.08-0.04-0.14 at times for both regulators.
The left pin of the v18s 1.80-1.9v at times. right is 1.40-1.50sv for some reason the voltages are different than yesterday when i tested them..
v33s is about the same 3.33-3.40s left and 1.5-1.62v right. again difference from yesterday......Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
Got some voltage readings for the regulators.
while facing the 3 pins
v33s 1.55v right pin and left is 3.23v.
v18s is 1.49v right 1.76v left
This is when its on with the colors going on the screen. i assume those volts are close enough?
I noticed too even when you turn off the monitor fully but keeping the power plug in? the main board is still heated. Is that normal?
Also i looked up some caps and found theses.
Now the 10uf ones...Last edited by gordesky1; 10-12-2020, 03:31 AM.Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
Hmm i just noticed something... while i was looking for caps on those sites i figure i look once more at the board. and i noticed this.
should the V33S be missing the middle pin??? it also really don't look heathy either.
unless its suppose to be missing that pin?
Yea sadly i guess they was made that way with out that connected .. I search around for other boards on google and yea they are like that too...
I did noticed this guy on the mega thread for no...Last edited by gordesky1; 10-12-2020, 01:23 AM.Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
yea i was thinking of just recaping the whole board cause yea of those dam capxon caps all over it...
The first caps i replaced years ago think in 2014 which i had the fuzzyness and the brightness wouldn't move from 100 was rubycons but than again they came off a foxcon motherboard but they did last and really not sure if they died cause when the surge hit in 2018 and when the lights came back on all i had was a blue light no black light...
But yea the hair dryer trick does point to caps on the board...Leave a comment:
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Re: Hanns-G HG281D, LCD Monitor no power
hmm so i seen this guy post about the red blue and green colors what im getting always now.
post 838 a page back.
Hello
I have a screen hg281d down.
At the start, it cycle on red blue green.
I replace c80 & C83.
I do not have 1.8V to regulator vs18.
The output is short-circuited with ground.
The regulator is ok, the capacitor is ok.
I do not have the schema to find or is short circuit.
If anyone had the schema.
This is c82 was...Leave a comment:
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Re: Hanns-G HG281D, LCD Monitor no power
just posted this issue. Figure i post it here too incase any of you know what can be the issue. [url]https://www.badcaps.net/forum/showthread.php?t=89422[/url]Re: Hanns-G HG281D, LCD Monitor no p...?t=89422[/url]Leave a comment:
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Re: Hanns-G HG281D stuck on self test color mode?
Oh heres some pics. i forgot to mention when the screw driver drop a year ago the spark caught the LVDS cable and damage it a little... So hopefully thats not a issue either...
Tho i used a volt tester and tested each pad going back to the main board and they all checked out fine. And if i leave the cable disconnected all i get is a grey screen but when its plugged in it does the color self test so i assume its fine?
I would order the cap repair kit for it and recap the whole main board and maybe...Last edited by gordesky1; 10-11-2020, 07:48 AM.Leave a comment:
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Hanns-G HG281D stuck on self test color mode?
So 2 years ago a surge hit this monitor:/ which years before i got it going again replacing the 2 16v caps on the main board C80 and C83.
After the surge all i had was a black screen with a blue led than it goes orange after secs.
So i took it apart to check it which i didint find no issues.. But my dam luck a screw driver drop on the psu and big spark happen and it blew the small 250v box fuse.
So it sat for a year till i ordered new fuses on amazon 2 days ago and got them in yesterday.
So i took it apart replaced the fuse... -
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...Last edited by gordesky1; 03-11-2019, 06:43 PM.Leave a comment:
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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...Last edited by gordesky1; 03-11-2019, 11:02 AM.Leave a comment:
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Re: dell 2007wfp bad caps.
update i changed out those 3 bad caps and still have the same issue. but i do see a very dark image now with a flash light but on this screen you need too put it right on the screen too see anything..
i will post 2 nice clear high definition photos later when my phone charges up cause that takes nice photos.
but at the moment im kinda thinking its the ccfls:/ while the caps are bulge they probably was still working.. really sucks cause this has the s-ips panel and it beats every screen i had in viewing angles..
...Last edited by gordesky1; 04-17-2018, 04:31 AM.Leave a comment:
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Re: Dell 2007WFP - Inverter Problem?
think i have this same issue.. was getting flickering for the pass 2 months on start up till it gets warm and it was fine after that.. 4 days ago when i woke up it was black but still was powered on cause you can see the image with a flash light. took it apart and found 3 bulgeing caps on the inverter so i replace them still the same issue.. they had too be replace sense everything has over 100k hours or close too it..
so its either the CCFL or inverter still.
so i would like too try this led trick...Last edited by gordesky1; 04-15-2018, 12:51 AM.Leave a comment:
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Re: Dell 2007WFP Won't Power On
Hmm turns out i am getting a very dark image on the screen now and buttons are working now... i shined a bright flash light on it and hooked it up too my laptop and yep i see the window moving around on it. But now im wondering is it a problem with the inverter or the ccfl... Tho i do noticed the inverter is not even warm and i know they do get warm too hot. I just cant find anything wrong with the inverter... i mean at first yea the bad caps but i replaced them and still nothing..
Im seeing on another thread https://www.badcaps.net/forum/showthread.php?t=8603...Last edited by gordesky1; 04-15-2018, 12:59 AM.Leave a comment:
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Re: Dell 2007WFP Won't Power On
hey guys i hope someone can help me.. I bought this monitor back in 2007 new and never had a issue with it till these last 2 months.
sometimes when you shut it off or goes in sleep mode than power it back on it would flicker for like 5minutes till it warms up and it fine but it kept on working till 4 days ago... I woke up and saw the screen was off but wouldn't come back on but the power light is on and the input light is lit but it wouldn't move too other inputs when you push the button.
The power works cause i can...Last edited by gordesky1; 04-14-2018, 10:00 PM.Leave a comment:
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dell 2007wfp bad caps.
So i have a dell 2007wfp which i bought in 2007 new and i been using it till this day as a 3rd monitor and i been having issues with it. Like sometimes it would flicker till it warms up and usely would be fine but it gotten worse over time.
When i woke up today i noticed the screen was off and there was nothing even displaying on the screen even when shining a flash light too it but its getting power.
So i took it apart and man its a pain in the ass but i got too the inverted board were the lcd plugs into and i found 3 bulge caps 25v 220f not as bad as i saw on other...
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