Question about Alesis RA-150 Amplifier

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Help i changed out the relay, the one from radio shack,it had 2 more pins on the bottom than the dong-woo relay so i soldered them in,right channel isn't working at all now, 2 big resistors on the bottom board near the front left volume knob look all-crackly, are they bad, what else can i do, where can i get those 2 resistors?

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  • andrew wilkes Jul 30, 2013

    i changed out 2 additional capacitor and the 2 resistors, now my power amp works great,seems like its running a little hotter though?


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Your first clue to going wrong with the repair is that the relay with two extra pins was the wrong type! So you need to look at the old one and read the ratings on it and search the net for one that does match it with the correct number of pins.
As for the resistors you need to read the colour code of them and again search for something the same size. The colour code will tell you the type you need. If you don't know how to read the colour code search on the net for a resistor colour code calculator.
As they look bad I would replace them, even if they did work, they could go dead later.

Posted on Jul 31, 2013

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