Re: Dell 2407WFPb Monitor - Bad Cap



1/ got to [url]www.taobaofocus.com[/url] (It is not a well designed website...)

2/click on the 'taobao search' button, this will open another browser tab showing the taobao home page

3/ enter the board part no. 4H.L2K02.A01 in the search box at the top of the taobao home page and click the orange button next to it. This will bring up a list of these boards for sale on taobao at the moment, the price should be about 170RMB.

4/ click on one of these to go to the listing, make sure the...

Re: Dell 2407WFPb Monitor - Bad Cap



Yes the new mosfet blew straight away. The replacement i used wasn't a k3502 but was the closest to its specs the local shop had, so that may have been the problem but I just got sick of trying at that point....

Re: Dell 2407WFPb Monitor - Bad Cap

Hi Guys

I was not able to repair my power board. After replacing the Big Bad Cap, the burnt resistor, the fuse (many times) and the switching MOSFET (only to have it blow again straight away) I gave up.

I sourced a replacement board through taobao, the chinese ebay, there are lots listed there under the board part number. I went through an english agent, taobaofocus.com. You pay them once and they bid and buy the item for you, then once they have received it in China you pay them a second payment for them to ship...

Re: Dell 2407WFPb Monitor - Bad Cap

Thanks very much Toasty, that is just the kind of hint I needed to get me moving in the right direction. I take it the switcher MOSFET will be the one attached to (and obscured by) the heat sink next to the fuse on my pic.

This seems especially logical because it is between the resistor that blew and the fuse that blew. I have tested it in situ and it has continuity between all combinations of D, G and S, which i take it indicates it is blown. I will pull it out and test it in isolation next.

Re: Dell 2407WFPb Monitor - Bad Cap

Well it didn't work for me either

Replaced the blown 450v cap, the .22ohm resistor and the 4a fuse and applied power, the monitor didn't come to life and the new fuse on the power board blew.

(I decided to only replace the one obviously blown capacitor for 2 reasons
1. Occams razor/if it aint broke don't fix it; 2. Others here have replaced all the caps and still had no success so it seemed like a waste of money/time)

Can anyone please advise what else on the board i should replace or test...

Re: Dell 2407WFPb Monitor - Bad Cap

Woah, you have lost me there cascade, that board doen't look the same as mine or the others posted here, you sure its a Dell 2407WFPb?

I am still waiting fo my replacement 450v 120uf cap to arrive but have noticed I too have a blown .22 ohm resistor as shown in this pic

[url]https://www.badcaps.net/forum/attachment.php?attachmentid=26056&d=1305906535[/url]

the same resistor as psykosonik and discopig I guess (and therefore probably 'the wizard', you should check this resistor...)

...

Re: Dell 2407WFPb Monitor - Bad Cap

Me too!

Exact same problem. The photo on post #10 is identical to how mine looked. So much for it being unusual for large caps like this to fail.

This is my first time to so I have found this thread invaluable, thank you all for your contributions, especially Toasty for his patience...

Now the big Question...?

Did It work? Has thewizard got his monitor running again? How about discopig?

Will be doing this myself shortly and it would give me big warm fuzzies to here that...