Hello… I have a K8010 and l have probel to my bias…
l have a problem to my R65 to R71 resistor this resistor get very hot.
I think is to much current to the resistor. And this is broken and the tubs are glowing up.
What is fault?
Hope you can give me a answer?
Apparantly the bias current is too high.
Check negative bias voltage.
[quote=“VEL417”]Apparantly the bias current is too high.
Check negative bias voltage.[/quote]
Hello l have do it …and the voltage is still 45.9 voltage 
Did the amp ever work ?
Do you have the negative bias at every tube ?
Are the tubes still OK ?
[quote=“VEL417”]Did the amp ever work ?
Do you have the negative bias at every tube ?
Are the tubes still OK ?[/quote]
hello…
the amp work yes … and yes l have bias every tube… and the tube work good …
l can not find any damage on det resistor or pcb to…
butt the resistor get very hot, this resistor to bias to kt88…
Looking at the history of your posts, we advise you to return your amp for inspection, as we cannot solve such problems by mail.
Please return it adequately packed to your distributor or to our tech. dept:
Velleman Projects Tech. Dept.
Legen Heirweg 33
9890 Gavere
Belgium
Should you be unable or unwilling to return your amp, we recommend to have it examined by a local technician.