Re: problem with dual power willem burner
 

my willems sucks too, it refuses to do SST chips only does atmel, which im down to my last one

Re: problem with dual power willem burner
 

i got the willem "enhanced" deal, lost one of my jumpers :( havn't used it in about a year. but i will be using it soon

Re: problem with dual power willem burner
 

That sounds like you don't have the jumpers and dip switches set right. I've done everything from regular 27c256 uv erasable pos's to the sst's and atmel 29c's with no issues at all.