Hi, thanks for your help. Last year I had the panels of my SEL 988 refurbished, everything was ok. After a few months I played music a little louder and one speaker shut down (protection). Then this speaker did work but never again played on the same level as the other one. On the good one I measured 4100 Volt, no leakage. On the bad one I measured 4500 Volt, also without leakage (the neon bulb is flashing every 30 - 35 seconds). I disconnected the triac to verify that this part is not causing the lack of volume. What do you think, might the reason for the malfunction be a bad delay coil? Thanks again!
