power board 19inch flat screen

[Deltix]

haveing a problem with a dead short circuit after the 100mf 400v capacitor blew its top i have replaced the cap and fuse also checked the rectifier but still blows the fuse all other componets seem to be in order .so am stuck any ideas would be appreciated .Dave

[Wrog]

Re: power board 19inch flat screen

haveing a problem with a dead short circuit after the 100mf 400v capacitor blew its top i have replaced the cap and fuse also checked the rectifier but still blows the fuse all other componets seem to be in order .so am stuck any ideas would be appreciated .Dave

A few things: 1. What did you replace the cap with (make, series, values), and what was the original? 2. You say you're having a "dead short circuit"; which component measures shorted and have you replaced it yet? 3. Attach pics of the power board (top/bottom) so people can see what's being worked on. Make sure you follow forum guidelines on attaching pictures (use the "Manage Attachments button").

[Deltix]

Re: power board 19inch flat screen

i have replaced cap with panasonic 100mf 400v with one identical 108c the origanal is hermie cant id the problem cause short circuit .

[Deltix]

Re: power board 19inch flat screen

here is photo of power board with replaced cap

[PlainBill]

Re: power board 19inch flat screen

here is photo of power board with replaced cap

Have you checked the power FET? Also, while the picture you gave us is nice and sharp, how about including the entire board - both top and bottom.

When the fuse blows there are only a few possible reasons. Shorted bridge rectifier (D801), shorted or reversed cap (make sure you got the polarity right), power FET (not in picture), or a solder short.

PlainBill