I did unconnect and reconnect the cartridge clips. When the right channel is out I do get a 60hz hum in the same channel.
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
- 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
Showing 9 responses by sbrownnw
Just found this. Interesting... |
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. |
@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? |
OK, I now know for sure what caused this hum problem. There is a RCA cable retainer on the RP6 that prevents the cables from pulling on / away from where the RCAs enter into the plinth. Somehow the RCA cables had moved in the cable retainer and was causing hum some or most of the time (probably due to the inertia of the platter starting). After adjusting the cable position in the retainer I found the sweet spot where there is no hum at all and now my phono preamp sounds the quietest it has even been with the volume at 60%+. Hope this helps other Rega owners... |