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a concert 602 amplifier the problem is when Iamp;#39;m going to raise the volume relay turning off alright I heard that okay that is the relay is on again and I can hear that the relay is turning off so letamp;#39;s check guys that is in on position if I am going to turn the volume up letamp;#39;s see what happened okay pull him up it is learning of and if Iamp;#39;m going to lower the volume it will turn on turn on turn off turn on file checking this to transistor here I found out this capacitor is faulty itamp;#39;s already corroded okay guys Iamp;#39;m going to remove this transistor and check one by one and then replace this capacitor and then letamp;#39;s check out this transistor here look at the pin itamp;#39;s already corroded Iamp;#39;m going to test this for short dates or open if itamp;#39;s still ok Iamp;#39;m going to put it back again after checking this to my multimeter it show a good transistor so Iamp;#39;m going to put it back again if you want to