Evo i resenja za BIAS:
By Aquarius72 from big diyaudio.com
(ovim putem mu se zahvaljujem )
Tube Dude was right. There is a 1 ohm 1/4W resistor which is shorted during normal operation with a tiny jumper PCB soldered to the solder side of the main board across 2 poles near the bias resistor. So if you measure the voltage at the test points, you're actually measuring voltage loss over this wire!
When the jumper PCB is removed, the bias voltage can be adjusted to 100mV. My amp runs pretty cool after I set the bias correctly.
Before I found the jumper PCB, I set the voltage to 1mV. After removing the jumper, the actual voltage over this 1 ohm resistor was 250mV!
evo ja postavljam sliku
Pitanje glasi:
da li su pomenuti jumperi ovo zaokruzeno crvenim??