Good morning everyone. I am trying to repair a Luxman LV-100 amplifier. I know it is worth little but it is a memory. I would like to understand how to check if the STK 2040 IC is faulty before replacing it. I have already checked a good portion of the electrolytic capacitors and replaced IC STK3042iii without success. Can anyone help me with this? The fault is that turning up the volume, greatly distorts the sound on both channels. Thank you
