Dell 3007WFP LCD Monitor PSU problem.

[mips]

Hi,

Details,
Manufacturer: Dell LCD Monitor
Model: 3007WFP
Liteon PSU part#: PA-4151-1-LF REV: D
Dell PSU part#: 6723000002P00

Click on image for larger view or use http://ompldr.org/vY2oyYw/PSU_Liteon_Dell3007LCD.jpg

I got the above image off the net but the details are still not clear enough.


Does anyone by any chance know where I can download a scematic/circuit diagram for this monitor PSU? I'm specifically interested in the details for IC100 on the bottom of the board as I have a burnt one.

Or even if you have a faulty board lying around you can read the details off the IC?


Any assistance would be greatly appreciated.

Thanks

[selldoor]

Re: Dell 3007WFP LCD Monitor PSU problem.

Hi I have been looking for you but only found Budm - I was going to leave a message on his photo but saw yours. Ive checked hes not a member here
, at least not as budm. He is on ifixit and I am registered to use that so have taken the liberty of asking your question in the hope that he will see it. Unfortunately they have no P.M facilities. Will keep looking

[mips]

Re: Dell 3007WFP LCD Monitor PSU problem.

Hi I have been looking for you but only found Budm - I was going to leave a message on his photo but saw yours. Ive checked hes not a member here
, at least not as budm. He is on ifixit and I am registered to use that so have taken the liberty of asking your question in the hope that he will see it. Unfortunately they have no P.M facilities. Will keep looking

Hi,

Much appreciated! I have also left a message for him on photobucket but dunno if he has seen it. I nicked his pic, hope he does not mind as I'm desperate.

I appreciate you looking as I have been hunting high & low via google but have not had much luck yet. I emailed Liteon but obviously they just ignored me

Much appreciated
mips

[retiredcaps]

Re: Dell 3007WFP LCD Monitor PSU problem.

Ive checked hes not a member here
, at least not as budm. He is on ifixit and I am registered to use that so

He is, but doesn't post here much (only 2 total).

https://www.badcaps.net/forum/member.php?u=16669

[mips]

Re: Dell 3007WFP LCD Monitor PSU problem.

Thanks, I have pm'ed budm hoping he gets a notification of some sort so he can have a look.

[selldoor]

Re: Dell 3007WFP LCD Monitor PSU problem.

He is, but doesn't post here much (only 2 total).

https://www.badcaps.net/forum/member.php?u=16669

Hmm - how did you do that? I thought it was alphabetical?

Oh yes -retired caps can you say what the IC might be I have a catalogue and if I new what it was i might find it. I have had a quick look at 14 lead soics and none of the numbers we have jumped out at me and it might narrow the search?

[selldoor]

Re: Dell 3007WFP LCD Monitor PSU problem.

Doh!

[retiredcaps]

Re: Dell 3007WFP LCD Monitor PSU problem.

Hmm - how did you do that? I thought it was alphabetical?

Magic.

I just searched for his name in google and added badcaps.net after it. I do remember seeing him post a few months after I started referencing his photo (mainly for bad ccfls, wiring, etc).

BTW, I didn't know about the members list feature. When I looked at it though, I noticed only 13 members listed for "B". I think the software only shows the most recent activity of "B" members which is why you didn't find budm.

PS. Please use jpg. It is much smaller and faster than bmp format and I can see a thumbnail preview with jpg whereas I can't see any preview with bmp.

[retiredcaps]

Re: Dell 3007WFP LCD Monitor PSU problem.

Oh yes -retired caps can you say what the IC might be I have a catalogue and if I new what it was i might find it.

In one thread where the OP couldn't find the part number, he used isopropyl alcohol to clean off the top of the IC so he could read more. I suggest doing the same to try and get more numbers/letters revealed.

https://www.badcaps.net/forum/showthread.php?t=17986

[budm]

Re: Dell 3007WFP LCD Monitor PSU problem.

The number as printed on the IC is
W27D723.
I am still looking for the spec sheet for this IC.

[mips]

Re: Dell 3007WFP LCD Monitor PSU problem.

In one thread where the OP couldn't find the part number, he used isopropyl alcohol to clean off the top of the IC so he could read more. I suggest doing the same to try and get more numbers/letters revealed.

In my case the IC has big hole in it where it popped so you cannot see anything.

The number as printed on the IC is
W27D723.
I am still looking for the spec sheet for this IC.

Thanks for that, much appreciated. Is there any manufacturers symbol on the IC at all? I see there are some other letters/numbers below the W27D723 which I can't make out.

Hope you don't mind me using your picture, it was the best one I could find.

[budm]

Re: Dell 3007WFP LCD Monitor PSU problem.

I got another P/N of this IC used on the board with the same model number.
LTA201P.

See pictures here:
http://s807.photobucket.com/albums/y...ower%20supply/

So it looks like there are more than one brand of this IC.

[budm]

Re: Dell 3007WFP LCD Monitor PSU problem.

If you Google "LTA201P SMPS IC"
This will come up as TEA1551T:
http://www.alldatasheet.com/view.jsp...51T/N1(LTA201P).

http://www.alldatasheet.com/datashee...S/TEA1552.html

You can look at the pin out and check the board to see if the connections match the application notes of the IC.

[budm]

Re: Dell 3007WFP LCD Monitor PSU problem.

More likely to be TEA1552

[mips]

Re: Dell 3007WFP LCD Monitor PSU problem.

budm, thanks a million. I owe you big time!

[budm]

Re: Dell 3007WFP LCD Monitor PSU problem.

Please keep us posted if it fixed the problem. When that IC blows up, it will usually take out the Gate drive resistor and diode and the MOSFET also.

[mips]

Re: Dell 3007WFP LCD Monitor PSU problem.

I don't actually have the monitor, it's about 1600km from me. I'm enquiring on behalf of someone else but will keep you posted.

First got to find a local source for that IC though.

Thanks again!

[budm]

Re: Dell 3007WFP LCD Monitor PSU problem.

Follow-up, the TEA# IC will not work on ALL the version of th board that you have, need to verify the VCC pin out of your original IC first and the relate connections.

[spintop]

Re: Dell 3007WFP LCD Monitor PSU problem.

anyone got the schematic for this monitor ?

thanks

[falconnpunch]

Re: Dell 3007WFP LCD Monitor PSU problem.

I have gone through photos from budm of this PSU and was wondering if anyone knows the values of R135 and R136. I have replaced the IC that is close to it and these two seem to have fried when I plugged it in. I may just order a new PSU for about $60 since I have no idea what I am doing.