Phoenix Gold Phorum

Have trouble with my Great amp..MS275... When the to internal fuses are removed it seems ok. When i put the fuses in, it drives a lot off ampere.I have nothing connected at the output. Should the 4 red internal leds light up When all is ok. I need tips to fix the amp.. plass help an PG fan..

Yes, you want the 4 red LEDs to light up. In your case, you could have a lot of possible problems. Any short in an output transistor, or any of the upstream transistors which make up "triple-darlington", will cause significant current draw. There are some fusable resistors sitting around these transistors, and if they are open, the output may drift, and draw a lot of current. You could also have a short from the bottom plate of your main output transistors to the heatsink (rare, but possible).

Do you have the wiring diagram for the ms275?