N-Channel no bias problem

[B.I.G]

I`ve built Holton`s N-Channel and the bias pot doesn`t work i have 0V across the drain/source resistors !!

the pot is multiturn 4.7K and it is ok!

The amp plays sound and hass severe crossover distorsion !

 

[B.I.G]

i`ve solved the problem but now have another one ... the previous one was that the lm317 regulator wasn`t mounted correctly but now i have Bias and it starts from a low value and increasses to about ... i really don`t know .... the most i`ve seen 150mv on my 0.22R resistors ... it should be about 18mv it doesn`t matter how i turn the bias pot it still increasses

 

[B.I.G]

PS: it increasses very fast in about 10sec it getts to about 150mv