Rega TT-PSU drops right channel


Hi everyone. Recently my RP6 starting dropping the right channel as soon as the needle hit the record. My routine is (with the TT-PSU powered off):

- place the record on the platter after a nitty gritty clean
- power up the TT-PSU while giving the platter a nudge
- clean record with anti-static carbon brush
- needle drop

First I thought a tonearm wire was loose on the cartridge or something along that line. But, if I switch the TT-PSU to 45 and then back to 33 my right channel works just fine. I know Regas ground to the right channel. Could something be wrong with the cable between the TT-PSU and the table? TT-PSU malfunctioning (I think it is still under warranty).

Thoughts / recommendations? TIA
sbrownnw
I did unconnect and reconnect the cartridge clips. When the right channel is out I do get a 60hz hum in the same channel.
@Sbrownnw - Thanks for the link, that is very interesting. I don't mean to deviate from the subject but can you provide your take on the Groovetracer RP6 subplatter? What changed and do you feel it was a worthwhile investment?
I can reproduce this scenario with the needle not on the record by:

- play record at 33, right channel is out
- lift tonearm
- switch TTPSU to 45, then to 33
- tonearm / needle down, both channels work great

The groovetracer ref subplatter is how the table should have come. Mine spins freer / longer than the factory RP8 subplatter.
Scott...weird dude! Try doing the same scenario you mention
above but don't "switch TTPSU to 45, then to 33", just
raise and then lower the arm and see if this works.

By raising and lowering the arm you are flexing the wire
inside the arm tube and this might be what is causing the
problem.

I know the RP6 uses that new metal support beam that runs
from the arm base to the spindle. Maybe this is somehow
" electronically coupling" the arm to the
motor/psu?

I'm just grasping at straws here, but I really don't
understand how an isolated tonearm can be interfered with by
a separate power supply unit?