hi everybody. again.. this is the most blew up amp I ever had or buid, aleph 5 had never such a problems.. today I blew 15 irfp 240..
all voltages seems ok (variuos about 3-4%) except voltage across r1 I must get 0,66v and getting 1,1 v drain of q1 is 18-19v. after 5-15minutes of listening amp blows. I measure temperature and this I found- directly onb mosfets 150-160 celsius. o coldest place on hetasinks 60. heatsinks are pretty big and even with smallers heatsinks zen v 4 worked well.. could anybody say where is a problem??

all voltages seems ok (variuos about 3-4%) except voltage across r1 I must get 0,66v and getting 1,1 v drain of q1 is 18-19v. after 5-15minutes of listening amp blows. I measure temperature and this I found- directly onb mosfets 150-160 celsius. o coldest place on hetasinks 60. heatsinks are pretty big and even with smallers heatsinks zen v 4 worked well.. could anybody say where is a problem??
