HP LP3065c dark shadow

[onastvar]

I have HP LP3065c 30" monitor, where suddenly the other day, a top part of the screen has a dark shadow, please see attached (image shows monitor turned on, with solid white background). Monitor is over 5 years old. Out of warranty. Could this be fixed, is it worth fixing? Thanks.

[selldoor]

Re: HP LP3065c dark shadow

It looks like a bulb is out - unusual for it to stay on at all I have assumed it is not led. Perhaps first thing to try woul be open it up an swap the lamp cables over if that is
possible

Welcome to the forum-
We can help a lot more if you please post good clear pictures of the whole chassis, and then pictures of each board, front and back (in the same orientation) and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

Please do not post inline and offsite as they slow down the loading of pages.

Examples of what is needed

https://www.badcaps.net/forum/attach...7&d=1280167246

https://www.badcaps.net/forum/attach...6&d=1280167246

https://www.badcaps.net/forum/attach...4&d=1280167246

It will be useful if you can say a bit about yourself - skills tools etc.

[klkmalik]

Re: HP LP3065c dark shadow

They have two reason , (1) top of CCFL fault, (2)also picture is dim with dark possible Tcon board. but before u must check power section is ok.

[onastvar]

Re: HP LP3065c dark shadow

Also, I've recently noticed, if I turn the monitor on, there's no dark shadow, after 2 seconds it appears on the top part of the screen. If I turn if off and on again same thing happens, dark shadow comes on after 2 seconds.

Thanks! I'm not sure if it's possible to swap lamp cables. I took pictures the best I could. Please advise if anything else I should check?

[selldoor]

Re: HP LP3065c dark shadow

Ok Then try unplugging one bulb at a time - unlikely that it will all stay on but you might discover if it is one bulb or more that is the problem.
Do you have any spare bulbs on anything you could substitute
Could you make up a tester bulb
https://www.badcaps.net/forum/showth...ght=test+lamps

[onastvar]

Re: HP LP3065c dark shadow

If the bulb happens to be the issue, how hard is it to replace it?

[Davi.p]

Re: HP LP3065c dark shadow

Hi, you've waited much time! It sounds like a 2 sec. to black sympthom so it can be some on the circuit for the upper part of the screen (lamps only) or more probably a faulty lamp that unlike most other cases it let the bottom part to stay on, this is quite obvious because we can see from the photo that there are 2 big chips on inverter so i think 2 separate feedback circuits, now you can post here the marking of those chips (bigger chips on photo 5) so we can maybe tell you how to disable the protection and see if the lamps stands on, after it we can also experiment if the lamp can be salvaged fro some time. Bye..

P.S.: you asked "is it worth fixing?", think that i was driving crazy for a 15", yes it is worth..

[Davi.p]

Re: HP LP3065c dark shadow

i assume that the upper side of monitor is the upper side in photo 5.. ?
after, to answer to your question, yes changing a lamp can be a very difficult task.. this is why i suggested to trim the prot. and retard the lamp change, but i think i will need the schematic or at least further pictures of the inv. board.

[onastvar]

Re: HP LP3065c dark shadow

Davi, thanks for your help!

I gave the monitor to tv/monitor repair guy, who told me we have to change power supply (PSU type/no.: Liteon PA-3171-2-LF Rev:B) He also said part wasn't available from his suppliers.

I really would like to fix this monitor, any suggestions where to get he Power Supply?