When i turn it on the speaker moves forward with a rather loud pop and stays forward! but thats it! nothing else i can do basic electronics but i just dont know where to start any ideas?

any help would be much appreciated!

thanks Matt

Probably a blown (shorted) output xsistor, (the output is directly connected to 1 of the rails via the short). A start would be to test the xsistors, of if readily available just replace them. Put a lightbulb in series with one side of the AC mains in to limit the current in case something else is also screwed up. (this will prevent blowing up the new xsistors).............

please help i want my amp back!!!

thanks Matt

Possible reasons include shorted rectifier diode(s) and open output transistor(s) allowing the power supply voltage to rise past the voltage limit of the capacitor.

What I thinmk you might want to do is to remove the transistors and diodes and check them out of circuit. If you have a schematic, it will help you find the parts that are most likely to have failed. But even without a schematic, you can check the transistors and diodes. Be sure to remove them from the circuit when testing.

So here's how you check it.

Connect your meter with (+) to a "P" junction and (-) to an "N" junction, and it should show continuity. This is forward biasing the junction. The reading will usually be from 5-50 ohms, depending on the transistor and the battery in the meter. Reverse the leads, (+) to "N" junction and (-) to "P" junction and the meter should read open. This is a reverse-biased connection.

Then connect from collector to emitter and test forward-bias continuity. If an NPN transustor, the collector is positive and the emitter negative to forward-bias and you should have continuity. PNP transistors are forward-biased with the collector negative and the emitter positive. Reverse bias the collector to emitter and it should show open.

the other thing is how can i test if my transformer is acting funny?

thanks again
matt