Hi,
Have had another look at the gnd scheme, it seems the gnd scheme is split into 4 point sections, and I can see from the original that the power TXF are grounded to the IEC gnd along with the 47uf and 33uf, nothing else is grounded at this point.
These next ones need your solder tag idea I think? Rather than the isolated pins which then feed all the way back to the IEC with long wire.
The next is by the T4B which had the input TXF, 1k V2, 1.5k, 2.7k and 470k.
3rd section is gnd of input XLR pin 1, 47k/330pf, 510pf, 100uf/1meg.
4th is output TXF, 470pf/ Zener, 330k.
My gnd scheme is not like this so I'm going to change it and see if it improves.
What do you think?
Regards
Spence.