Vizio vp42 hdtv went pop and picture very dark. Found blown fuse FS1 on zsus board. Any suggestions?

VP42 HDTV Will not power up. Changed power supply board and power cord. Still nothing

Yes the problem can be came from broken main board, replacement usually available.

You have a shorted circuit board in there somewhere, fuse pop for a reason.

Hi- My PL4260N stopped working after about three years, the audio worked but no video at all. The TV worked fine until one day...no more picture.
I found out that the YSUS and ZSUS boards in the TC fail alot...BUT you can get new or repaired ones off of EBAY...
First check for failed components (burned, loose, bulging, etc.) if nothing obvious is failed then check the fuses on the YSUS, ZSUS, and power supply boards...usually if a board has a blown fuse the board needs to be replaced...get the part number and search it in Google and eBay and you will find options for replace/repair.
Mine had a blown fuse on the YSUS board...I got it fixed for $75 through coppell TV (they are on Ebay)....
Now my TV works fine again!
Good luck.

maybe z board bad need replaced

check y-sus board(top left with 2 white fuse)
check z-sus board(right small board with 2 white fuse)-view from back
blown fuse? replace that board. partstore.com or discount-merchant.com

I Have An LG - 42PC3D-UD, When I Turn It On "It Have Sound And A Very Bad Picture.

you need to change the sustainer boards and TV will be good as new.

Try finding the gamma/brightness potentiometer and turning it ever so slightly, testing each time to see if you are adjusting it correctly. If I'm right, it will be on the same circuit board as the cable tuner. I'm not a p42 owner but my dad has a vizio of another kind with this problem.

I know you already replaced the board, this is for future searchers. If you heard a popping sound, then the picture went out, there is a 32 pin Sanyo module that goes bad on the board. That's probably what caused the fuse to blow. Replace the module, then replace the fuse. The module is less than half the cost of a used board. Since this was a popular model TV, there are lots of replacement boards on the used market.