Revox Stopped working

[jt45]

I have a Shure V15 IV with a JICO stylus on my B790. It is my main table and has the most neutral clear sound of any cartridge I have ever used. I have been through many in the last 45 years!

Thats good to know !
I had my V15 IV on the mitsu till the Revox broke down, then I swapped out the grado for a test run on the Mitsu and an (unknown Culprit)(cat or kid) found my jico stylus for the V15 I thought I had stashed safely. Needless to say I found the pieces.
(Not a good day for everything/everyone involved):tears:

Did you use a spacer with your V15 on the Revox ?

I actually think my Mitsu is the better sounding table but the Revox gets the nod for best overall for its engineering and ease of use. But of course I havent had a really good cart on the revox yet, not saying the Grado
sounds bad at all I just havent tried any others yet. So my comparison is really a moot point.

 

[jim249]

The Revox cartridge installation sheet I have says to use a 3 mm spacer. You also use the lead counter weight. The other counter weight used on the tonearm is brass but that is for lighter weight cartridges. The fixing screws are M2.5x10.

 

[jt45]

I have the same spacer, not sure about the counterweight though. Further investigation is needed on that. Im thinking about putting my new M97XE on it for a trial run. It needs some run-in time since I just got it 3 days ago and the Mitsu table is now out of rotation.
Edited: (changed my mind) I will run it till I get another stylus for the V15 (starting to miss it ALOT)
Thanks for the info.

 

[jt45]

The Revox cartridge installation sheet I have says to use a 3 mm spacer. You also use the lead counter weight. The other counter weight used on the tonearm is brass but that is for lighter weight cartridges. The fixing screws are M2.5x10.

I checked it out and it appears I have the spacer and lead counterweight so I decided to put on the new M97XE for a trial run. According to the paper the shure runs at 2 grams with the brush down, I had no problems getting the tracking force set and its Tracking good and certainly livened up the sound over the Grado.
I put on a new to me Steely Dan LP I picked up yesterday and its sounding very good. Im pleased with the results for now and should probably give the Shure time to break-in for a few days. Thanks jim.
Here is a pic of it.

 

[Robie]

Congrats on getting it going, jt45. I'm liking my 795 but a cartridge change, if not a stylus change is in order soon. I'll be watching for what you ultimately decide upon.

 

[jim249]

I decided to put on the new M97XE for a trial run

There is also a cartridge drop setting. The tip of the needle should be sitting just above the inner ridge on your tt mat. The screw to adjust it is the one on top of the tone arm.:thmbsp:

 

[jt45]

There is also a cartridge drop setting. The tip of the needle should be sitting just above the inner ridge on your tt mat. The screw to adjust it is the one on top of the tone arm.:thmbsp:

Thanks I will check that, I think I have my original manual here somewhere.
I have another small issue though, It seems now on occasion the arm isnt dropping all the way when i first hit the down button, this is intermittent and appears to be just a Lubrication issue with the plunger maybe (maybe just a little dirt or something. With the cover off its not a big deal since all it takes is a touch to get it to drop all the way, however the arm drops far enough to appear to be down and at first I thought the muting issue was back, thank goodness thats not the case, but it does/did make me wonder if this could be related to my original problem. I will clean that (plunger) and run it through some
raise/lower cycles.
Other than that it is sounding better than ever!

 

[dlaloum]

There is also a cartridge drop setting. The tip of the needle should be sitting just above the inner ridge on your tt mat. The screw to adjust it is the one on top of the tone arm.:thmbsp:

Carefull with that setting - it can be finicky... if set too high, the cart won't settle down, and keeps hitting the stop tab when trying to play the record.

So it needs to be really really close to the ridge on the mat without actually touching it.

Some people have found it simpler to adjust it so that it would actually touch the mat if dropped onto it.

It is a nice failsafe in case you are not the only one using the table, or if kids are around who might play with the buttons!

Bye for now

David

 

[jt45]

Also at times if I raise the arm while playing a record it almost appears to snap up verses raising smoothly, now Im wondering what might cause this as it doesnt always do this and it seems like the up function should always be a controlled lift. I suspect that again might be related to those plungers and I should check those out thoroughly. I dont remember the arm acting this way before the table went down.

 

[jim249]

Two questions. Does the tone arm jump when turning the power off to the tt? Have you replaced the 3 bridge rectifiers on the power supply board? My solenoid was acting weird too, but have noticed that after I replaced the bridge rectifiers to remove transformer hum, that the solenoid is acting fine now.

 

[jim249]

Please post a picture of the transformer, with the picture showing the input side. That is the side next to that small pcb.

 

[jt45]

No it doesnt jump when turning off the power, but when im actually playing a record and push the button to raise the arm sometimes it jumps as if its spring loaded, however if I manually move the arm left or right and raise or lower it, its fine. I havent noticed any hum with any of the cartridges Ive had on it, including the Grado wich Ive read can be sensitive to hum. I dont think its a serious issue, but given the nature of the muting function and other fragile parts in the arm (like those tiny spring wires) It cant be a good thing.

 

[jim249]

I havent noticed any hum with any of the cartridges Ive had on it

The hum was from my transformer, not my speakers.

 

[jt45]

Please post a picture of the transformer, with the picture showing the input side. That is the side next to that small pcb.

Ok I will put up some pics this evening after I get home and get it apart.
Thanks.

 

[jt45]

Well I found the problem, the plunger that free falls and controls the drop speed was not dropping smoothly and was hanging about 3/4 way down, meanwhile the servo plunger was dropping all the way wich left a space under that lift rail. Whenever the up button is pushed it releases that plunger wich is spring loaded and would hit the rail causing the arm to jerk , at that point the floating plunger would control the speed. So both plungers must work in unison in order for the arm to raise and lower properly.
I was able to clean the floating plunger as well as the small pinhole wich allows air to escape properly. A little light lubrication and its working fine again.
However here are some more pics

 

[jim249]

Transformer

Your transformer is still wired for 110 volts. It should be wired for 120 volts which would match your wall voltage, to reduce strain on the transformer. The white wire on mine was located where it is now from day one while yours is located to the far right.:thmbsp:

 

[jt45]

Thanks a bunch I would have never known, next time Im into it (again) I will change that. Wonder why its wired different from yours ?

 

[jim249]

Wonder why its wired different from yours

Mine was wired like yours, had to move the wires to the 120 lugs. All of these came wired for 110. All of the rest of the Revox stuff came wired for 120 though. :thmbsp: