Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

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mistral47
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Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by mistral47 » 20 Apr 2019 01:50

Hello all,
Posting this in hopes it could help save some Thorens TD 126 MK II owners some time / frustrations and get them listening to music on this great TT faster vs troubleshooting for days.
I’m not a tech - so please use your judgement on my advice and my terms may not be the component terms used in the service manual...

- One channel hum - on my unit the culprit was one of the RCA connects was looser than the other. Use pliers to VERY gently crimp the outer metal clamps a BIT tighter.
- speed issues - new belt (cheapest fix) but don’t stop there. Rubbing alcohol cleaning of core platter outer edges and the same for belt motor plastic wheel. Also, two drops of TT oil into the Core platter shaft hole- lift and insert shaft into hole a few times to ensure oil is distributed
- ground wire - connect or don’t - see if you get hum with it, versus disconnected. Ultimately for me it made no difference after the RCA fix.

Enjoy
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mistral47
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by mistral47 » 21 Apr 2019 23:29

Day three thought I would add more troubleshooting tips

- after playing perfectly for two days experienced wandering/inconsistent speed.
- fix - I haven’t opened up yet, (waiting fo new lamps to arrive) but with the TT OFF, I turned the speed adjust dial fully left to right ~ 50 times to work out any control dirt and afterwards worked perfectly

Alec124c41
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by Alec124c41 » 22 Apr 2019 21:38

Loose RCA skirts are easy to overlook. Those plugs should take a good shove to go on.
Oil in the platter bearings is necessary. While you are at it, a drop or two into the motor bearings is also a good idea. Sewing machine oil is good. All-purpose 3-in-one is not.
When you get inside, use some good contact/control cleaner with lubricant in all switches, contacts, and controls.

Cheers,
Alec

mistral47
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by mistral47 » 28 Apr 2019 14:24

Adding more about my Thorens TD 126 MK II - replacing lamps / replacing bulbs

Only realized after replacing bulbs that the job can be done WITHOUT removing the bottom cover. Service manual implies you need to remove bottom cover - but you do not need to.Iactually repeated process with the bottom cover on - just to be sure.

STANDARD CAUTION: Only follow these instructions if you have proper tools, and are qualified. Always unplug the unit, even unplugged there could be remaining stored energy... follow below at your own risk. I’m not responsible for anything that may happen to you or your equipment. Read the service manuals.

Bulbs
I found bulbs in North America, $20 including shipping for set of 6 LED.
note for purists, that color with LED changes to white versus warm orange.

Steps:
1. With the turntable on a table pull it outward so it over hangs around 4 inches - all four foot pads should still be on table.
2 underneath the turntable (with the bottom cover still in place) you will see two holes with small red clips inside
3. Start on one side (doesn’t matter which) Use a screw driver that fits into the holes, insert tip and push gently up firmly and slowly - as you are pushing, gently slide the faceplate upwards on the side you are working - it will come unhinged.
4. Repeat step three on opposite side - be cautious to hold faceplate as you push up because it will the be able to fall free
5. Now you have the circuit board for the controls and lighting exposes and facing you. You will see six small plastic extruding squares - these are the back of the light bulb holders. Gently slide them out one by one, and replace bulbs, then gently reinsert. REPLACEMENT LED BULBS have a larger base so you will need to push a bit harder than a normal incandescent bulb - push gently but firmly and it will set a in place.
6. Replacing faceplate - start on one side, insert screwdriver to press clip and install BOTTOM of panel first Andy then gently press top into place.
Repeat on opposite side. I FIND REPLACING THE COVER MUCH MORE DIFFICULT - persist, gently, and you will get it done.
Hope this helps someone.

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 01 Sep 2019 16:48

Hi, I’m looking at a stock 126 MKII. Appears to be in very good to mint shape. I read in some places that parts are hard to come by.

What has your experience been?

Thanks

mistral47
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by mistral47 » 01 Sep 2019 17:55

I’m very fond of the unit. If it works and price is right (North America ~ $600 below $450 is a bargain...) its a great playing and looking turntable.Assume it has good quality cart/stylus - mine came with. Stanton 881S.
I also have the TD 125 MKII - from my experience they sound ~ same
Ensure to test all auto features...
Cover side Hinges on the 126 are almost always non functional - I use a record brush to hold the cover open when I’m playing.

AnalogueEric
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 03 Sep 2019 02:34

Mine has the same Stanton. I need to set up the tonearm, which I don't know how to do yet. It's the stock one, TP 16 or something.

Anyway, the exterior is pristine. The cover has no cracks, or scrapes and the hinges work fine.

I'll try your tricks to get it right. The platter speed is difficult to get dead on, so I'll try wiggling it back and forth, plus lubing it.

Thank you for your advice.

Eric

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 03 Sep 2019 02:37

Wiggling the pitch control worked! Thanks again!

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 03 Sep 2019 18:02

Cleaned it up. Thought you might be interested. I have to adjust cuing arm higher, among other things. I can't believe how mint this thing is.
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mistral47
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by mistral47 » 03 Sep 2019 18:34

LOVE IT. Are you holding the cover open in that picture? Only asking because i've never seen a 126 where the hinges hold the cover in place.
Enjoy - looks amazing.

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 03 Sep 2019 19:59

The hinges work. There's two screws in the back that control spring tension. Turning them counter clockwise increases the tension. It works perfectly.

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 24 Sep 2019 14:43

Hey, thanks for the tips on those red clips. I have to reglue the mirror. Do you recall if you can get at that mirror with the faceplate off? Otherwise, I will have take the top plate off, which is much more complex. (I replaced the springs, which was not too hard, just have to be careful when taking the cover off.

mistral47
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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by mistral47 » 24 Sep 2019 17:30

I needed to re-glue mirror as well - I accessed from removing bottom cover.easy to do - I used original and flipped it, be caustic is about getting any glue on mirror front face...

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 24 Sep 2019 17:35

Thanks, I’ll need some long tweezers or something to get at it. I thought I was going to have to remove the top plate, a job I was not looking forward to trying.

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Re: Thorens TD 126 MK II - first day fixes and PROBLEMS SOLVED

Post by AnalogueEric » 24 Sep 2019 23:26

So, I did it. I found I had to remove the top plate, move the laser to get at the mirror. Glued and good, but I had to resolder a bunch of grounds and tonearm wires. Pain in the ass, but it’s fine and it all works. I’d previously replaced the springs (saw how to do that in a vid on Vinylnirvana. Dave’s cool.

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