Fix COB FLASH
![](http://flashboot.ru/uploads/images/78/2017/11/26/download.jpg)
hi again
to day we have 4GB HP flash
this flash is not working
First step we must check Fuse
1-use multimeter
connect black wire on flash disk 5volt and red wire on GND show 630~650
if show betwen 500 and 650 5volt fuse is ok
if see the range your flash 5volt fuse is safe
if not try to found 5volt way
![](http://flashboot.ru/uploads/images/78/2017/11/26/img_20171126_183032.jpg)
2-test DP DM
also use multimeter to see range betwen dp dm you must see in 1 second 1200~1500
![](http://flashboot.ru/uploads/images/78/2017/11/26/img_20171126_183106.jpg)
ok we know test dp and dm
to day hp 4gb 5volt show «0» we found 5 volt way and use wire to connect 5 volt
in this picture i show the dp dm and 5 volt line
solder 5volt to line and flash is worked again
this flash have important data and we fix it
with out any flashextractor or pc 3000
![](http://flashboot.ru/uploads/images/78/2017/11/26/untitled.jpg)