Hi,

I need some advice(reassurance). I have recapped my 7200.2 as the original Nichicons had lost some of their value, up to 50% in some cases.

I have used Panasonic FC throughout but now have an issue I am not sure on.

I powered up using a 150W DBT to make sure nothing goes wrong and all good.

When sat idle, theres no issue.

When I send a music signal, the speaker plays for 1-2 secs and then plays a strange bell type ringing noise. If I stop the music, the ringing continues for another second or so and then the speaker reboots itself.

I am now stuck, after many hours of research, ChatGPT has suggested that the low ESR of the FC could be causing an oscillation somewhere, however, I cant see anyone having issues with low ESR recapping with some using FR and FM caps I believe.

I am leaning towards the DBT starving the system and crashing the DSP board which is creating the odd sound. I am reluctant to go full mains, however, in case there is an actual oscillation.

I have double/triple checked all caps, orientation and soldering etc.

1)Do I just man up and go for it?
2)Has anyone recapped their DSPs with low ESR and no issues?
3)Has anyone powered with DBT and had the same issue?

Thanks all!

Steve

Meridian DSP6000 96/24/7