Post by fuxtor on Dec 6, 2020 23:25:03 GMT -5
Trying to troubleshoot a Carver TFM-25 amplifier. One channel is putting the unit into protection ( -350 / -400 mv ) on the speaker output. Transistors all seem good , power supply also looking good. Looking at the input of the right channel, it goes to a dual opamp ( NJM4565L ) . The Left channel output pin reads 150mv while the right channel reads -14.6v ? Think i should try replacing this opamp? I do know these units are plagued with bad /cold solder joints , I have gone over the obvious heat stressed areas and anything else that looked suspect, but still no change to the right channels offset.
