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<danutzz> · 02-04-2011, 06:19 PM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

Good news... I have changed the 3 1000uF capacitors and resoldered all of the transformer pins and the result you can see in the attached image

I will also change the rest of capacitors but there is still one problem left: I can hear some noise from the monitor (with almost constant frequency). Do you think that by replacing all the capacitors the noise will go away or is it another problem?

Thanks,
Daniel...

<danutzz> · 01-31-2011, 01:47 PM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

Thank you for the hint, I didn't knew about this program

. I have allready installed VuePrint and it works fine.

Daniel...

<danutzz> · 01-31-2011, 01:45 PM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

I'll also take that into consideration. Thanks'...

<danutzz> · 01-31-2011, 08:42 AM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

I will do that as soon as I will have some free time

Thank you all for indications!
I will post results as soon as I will complete the tasks....

<danutzz> · 01-31-2011, 08:40 AM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

Sorry for that... I was in a hurry and had to do print-screen from jpg imported in Word because the original img. was made with 12 mpx camera and couldn't upload it like that

...

<danutzz> · 01-30-2011, 04:21 PM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

I have just made a photo of the board. There is something strange in the left side of the image... Above the 1st and 3rd transformers the board is colored. It is not smoked, just colored. Any ideeas why?
I will try to find new capacitors and transistors and change them but I'm not quite sure when I will be able to do that since I will mostly be at school but I will post the result when the operation will be completed.

Daniel...

<danutzz> · 01-30-2011, 07:30 AM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

Thank you for your fast reply! I will open the case and post the pics on the forum today.

Daniel...

<danutzz> · 01-29-2011, 08:11 PM

Re: HP L1955 with Benq 48.L1A02.A00 inverter

Hey,
I have a problem with the same board on an L1955. It doesn't start at al. The front LED just flashes and it also makes a strange noise in the same time with the flashes. Do you have any ideeas of what could be the problem?
I am sorry for this silly post, I should have probably started reading more about LCD Monitor circuits since I have no ideea of what's inside, but I thought that someone might help me.
Thanks'

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