Re: HP LP2065 Buzzing noise / other issues


I have to try that. Small, hardly audible buzzing is still there, but that loud one is still gone after 1 hours from that gentle tap with mic. Looks like it begins somehow after it reaches some critical temperature point.

I have to ask more accurate dimensions to that 8TP00010 since it looks a bit smaller than my ...11 versions. Still 13$ isn't bad if it will fix that buzzing....

Re: HP LP2065 Buzzing noise / other issues

Thank you for your answer.

Something wrong there are in those two transformers. I just made very simple microphone-headphones test with monitor interiors visible. When buzzing noise began, two of the inverter-side transformers were making much more noise than other four. After i gently tap those transformers with microphone, buzzing noise disappeared.

Do i have to start hitting my monitor every time buzzing begins?

The real problem is however, where can i get replacement transformers since...

Re: HP LP2065 Buzzing noise / other issues

Hi again...

I uploaded pictures of circuit board. I also measured resistances of those inverter CCFL transformers. Here are the measurements from upper left to lower right:

1: 8.89Mohm, 8.89Mohm, 0.89komh
2: 8.89Mohm, 8.92Mohm, 0.892kohm
3: 8.99Mohm, 9.01Mohm, 0.882kohm

4: 0.874kohm, 9,01Mohm, 9,27Mohm
5: 0.875kohm, 8.75Mohm, 8.85Mohm *
6: 0.894kohm, 8.92Mohm, 8.92Mohm *

Sometimes two transformers marked with * showed ~200-300kohm instead of 8...10Mohm. Small tap...

Re: HP LP2065 Buzzing noise / other issues

I took my time trying to look for some information of that transformer but i got stuck again.

However i tried to adjust brightness and contrast from OSD and when i turned brightness to 100% buzzing noise (it begins after ~10min) disappeared almost completely. Small "humming" is still audible, but that is not as annoying as the loud one. If i turn brightness from 100% to 97% (from OSD) buzzing comes back getting louder every step from 100 to 97.

As i mentioned earlier, picture is fine. I found some...

Hi everyone.

I had opportunity to get one HP LP2065 for free from our company's IT department. I quickly took a look that monitor showed picture and took it home. After switching on monitor at home everything seemed to be ok...

...however monitor wasn't ok. After it had warmed up a buzzing noise started to strengthen. After fully warmed up that buzzing is annoying and cannot be normal behaviour. Picture is fine, no flashing or anything else. Power-up is instant.

Then i took some time googling for possible solution and i found badcaps.net and issues with other...

Re: New Members - please post your introductions here

Greetings from Finland.

I'm a Civil engineer here in Finland and i'm used to work with good computer hardware. I was able to get a free monitor from our company IT department as they were throwing away old hardware. Only problem was that my "new" HP LP 2065 is buzzing weird...

Hours of googling took me here to find valuable information concerning bad caps and other stuff. So first post here, second in suitable category to come. Thank you all for this great source of information!
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