I have a 2005 Variax 500 that has an issue that has reappeared after having it fixed once in the past.
The issue is: When connected to external power (described below) the sound/signal output of the Variax goes on and off (or cuts in and out), approx. 1.5 seconds "on" and .5 second "off", over and over. Like this: Sound, no sound, sound, no sound, etc. Could be that the power input is cycling, thus causing the sound output to cycle on/off as well. Not sure of root cause.
The V500 is connected to external power ("by the book") via connection as follows:
Original Line6 120VAC to 9VAC Power Supply (PN MW48T) --> Original Line6 Switch box --> Original Planet Waves TRS cable --> V500 Jack Plate
The 1/4 inch out of the Switch Box is connected to a guitar amp, powered on, and ready for play, the Switch Box footswitch is toggled to "1/4" (output to the 1/4" Jack then to the guitar amp), the Switch Box "Power" Light is "lit" confirming external power to the Switch Box.
1) With 6 AAs in the battery pack installed (and no external power), V500 output connected direct from its Jack Plate 1/4" to guitar amp 1/4" via regular (not TRS) cable, the Variax works normally. Issue appears to be related to external power.
2) For exactly the same issue, approx. 3 years ago, I took the Variax to a local Line6 recommended authorized service location. After diagnosing, Auth Service said the issue was with the Jack Plate. After paying for parts and labor for them to replace the Jack Plate, the Variax worked for maybe another 2 years, now it has the same issue all over again.
3) When the Jack Plate was replaced by Auth Service, the part they installed looks to be the same Jack Plate part as is used by more current Variax (rather than like the original with the "boot" cover). The replacement Jack Plate is the newer version that has a trap door over the Ethernet port.(PN 50-04-0181-4 Full Compass).
4) I recently obtained a JTV-69 Variax (on my way to the Dream Rig!) and verified the same original external power configuration works properly with the new Variax.
So here I am now, same issue as before. I prefer to power the Variax via external power. I can risk the approx. $30 US for the part, replace the Jack Plate myself, and hope that fixes the Variax (again). I can't remove the Jack Plate from the JTV and try it on the V500 to see if that fixes it before I order a replacement because it appears the JTV Jack Plate is a different part # than for the V500.
I am surprised because I seem to be the only user this has happened/happens to. Also with the revised Jack Plate installed at the first repair, I could not have thereafter accidentally shorted anything because the Ethernet port is covered by the trap door.
Is anyone familiar with this issue? Any advice/wisdom WRT this issue?
Edited by egkor, 02 April 2014 - 07:24 AM.