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nickhog

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Last Activity: 09-13-2021, 01:14 PM

Joined: 12-22-2015

Location: beaufort,sc

nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-21-2016, 12:06 PM
Re: Hanns-G HZ281HPB Black Screen

Since I had recently tossed out all my old PC powersupplies, I had to resort to buying a diode . I used a new MBR10100CT and, with no place to buy locally, I had to order it. 45 cents for the diode and $6 for shipping... I got 2 just in case... So, Once again... Have one on me and thanks for your support...

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nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-17-2016, 10:36 AM
Re: Hanns-G HZ281HPB Black Screen

Welllll, Welcome back Badcaps...!!!!

momaka and budm,
You can put another notch in your guns... Thanks to your help and suggestions, I'm sitting here looking at my beloved Hanns-G again. It was D210. Replaced it and now all is fine again. I hope this thread helps others who want to save a monitor...

Thanks again... Have one on me....

nickhog out......

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nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-08-2016, 07:37 PM
Re: Hanns-G HZ281HPB Black Screen

Well, I had couple old PC supplies but I just recently cleaned up... You know that that goes... Save it and you'll never need it, throw it away and you'll need it tomorrow.. Looks like about 45 cents for the diode and $6.00 shipping... I'll get one asap and get back with you on the results...

Thanks again for hangin with me....

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nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-08-2016, 02:57 PM
Re: Hanns-G HZ281HPB Black Screen

budm, will try to get some better pictures later tonight or tomorrow.

Meantime, momaka, I pulled fuse, no change. Fulled d-210, d-220, d-720

d210 = mbr10100ct = dual diode common cathode - one side shorted
d220 = mbr20450tg =not marked checks like dual diode and OK
d720 = mbr2060ct = dual diode common cathode - checks OK

For starters, looks like I need a MBR10100CT....

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Last edited by nickhog; 01-08-2016, 03:13 PM.
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nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-07-2016, 09:50 PM
Re: Hanns-G HZ281HPB Black Screen

I follow the tech info very clearly... Great info... You are correct about pin 4, it is labeled ADJ. Here's what I got (only checked DC volts)..

Plugged in, power off:
only pins with voltage are ;
Pin 4 = 5.2v
Pin 11 = 3.12v

Power ON, Video input'
Pin 2 =5.04V
Pin 4 = 5.18v
Pin 5 = 0.69v
Pin 6 = 0.69v
Pin 9 = 0v
Pin 10 = 0v
Pin 11 = 2.95v
Pin 12 = 5.0v

So, looks like we're telling it to turn but it ain't listening...

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nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-07-2016, 05:35 PM
Re: Hanns-G HZ281HPB Black Screen

Re-checked for flicker/flash and did flashlight test in dark. No flicker/flash and no video visible under flashlight..

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nickhog replied to Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-07-2016, 10:59 AM
Re: Hanns-G HZ281HPB Black Screen

No flicker/flash and I don't see any image with the flashlight. It's a bright sunny day here so I'll double check this in the dark tonight. Fuses are;

F720 = 5A/250v
F211 = 4A/250v
F220 = 5A/250v

All measure good in the circuit with Ohm meter. Didn't do any voltage checks because I can't get to the bottom of the board with the pink wired connectors connected.

I do appreciate your time. Would love to save this monitor since I can't replace it. Everything today is wide screen format and nothing...

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nickhog replied to Hanns-G HZ281HPB Black Screen

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01-05-2016, 06:22 PM
Re: Hanns-G HZ281HPB Black Screen

Sure would like to get my eyes on a set of schematics for this monitor...

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nickhog replied to HANNS G HZ281 White Screen

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01-05-2016, 06:20 PM
Re: HANNS G HZ281 White Screen

New thread started as requested... Hanns-G HZ281HPB Black Screen

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nickhog started a topic Hanns-G HZ281HPB Black Screen

in Troubleshooting Computer Displays

01-01-2016, 07:07 PM
Hanns-G HZ281HPB Black Screen

From my Original post
"I have a HZ281 with opposite problem. My screen is black. Was working fine, selected a new web page, screen went black. Power light comes on and off with power switch, Power light turns green with either a VGA or DVI video source connected but screen stays black. No visible of bad caps, no burnt components or boards. Any thoughts or suggestions appreciated.."

My pictures aren't as good as those posted in the White Screen thread. Looks to me that most of my boards are the same as those. Hopefully you can help me identify what each board is...

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nickhog replied to HANNS G HZ281 White Screen

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01-01-2016, 01:33 PM
Re: HANNS G HZ281 White Screen

I have a HZ281 with opposite problem. My screen is black. Was working fine, selected a new web page, screen went black. Power light comes on and off with power switch, Power light turns green with either a VGA or DVI video source connected but screen stays black. No visible of bad caps, no burnt components or boards. Any thoughts or suggestions appreciated..

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