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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
sbrownnw OP
707 posts
 
Just found this. Interesting...
jcoehler's avatar
jcoehler
232 posts
 
@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?
sbrownnw OP
707 posts
 
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.
mofimadness's avatar
mofimadness
5,002 posts
 
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?
sbrownnw OP
707 posts
 
@mofi,

My new routine is:

- put on record after cleaning
- turn on TTPSU (usually at 33)
- switch to 45 on TTPSU
- clean record with carbon antistatic brush
- switch back to 33
- needle drop (first time tonearm, cue has been touched)

I've never had a right channel out problem with the above order of steps. I almost always get the right channel out problems if I do not do the 3rd (and 5th) steps.

My dealer has told me in the past (before this problem started) that Regas ground to the right channel and do not use a separate ground wire. Is this achieved through the tonearm wires right to the RCA male plugs or is the TTPSU involved in the right channel ground?
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