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Denon DP80 & DP75 Owner's Thread

to be clear though, the motor itself is vibrating more than it should after it reaches correct speed. It's low but you can just barely hear it when everything is together and it's running. I think I am going to replace a couple other transistors on the 351 board to see if it is a gain matching issue or something.
 
to report back, my DP-75 motor did not have any sort of felt ring in there. maybe this is one uses an oil impregnated brass type of thing? I put a few drops of synthetic. I shoulda taken pictures but I put it back together as I'm still trying to get rid of the hum/vibration. Next I am going to replace the 5V regulator and some diodes as the 5v rail is measuring a little low (4.88).

It appears to be the same motor as pictured here from a DP-70: IMG-20240427-183415800 hosted at ImgBB

you remove that snap ring to separate the spindle from the core, but I didn't see any felt rings.
 
Bought a DP-75M console with DP-75 motor and DA-402 wand without arm. Seller did not mention the condition of the unit other than the obvious as seen from the pics in the Ebay auction.
Fineer and metalwork had lot of stains.
The DA-402 has problems with the anti skating. When you push in the anti-skating knob to engage anti-skating it locks the free movement of the wand and the mark turns with the dial.
It plays though with the knob pulled outside.
I treated the fineer with Mequiars Polish and Carnabau wax and that worked very good. I already had a DP-80 in an ugly DK-200 base and swapped the motorunits. No I have a DP-75M with a DP-80 inside.1000019405.jpg20260331_190501.jpg20260314_224347.jpg20260325_090333.jpg20260314_154957.jpg
 
Hi All,

I recently purchased a Denn DP80, which hasn't bene serviced sinc it was constructed. I was going to replace the caps, but first tried to download the service manual from VE. That site no longer appears to have me saved a member and i can't contact them, so i thought i'd see if anyone could share the manual here?
 
IMG_0489.jpeg

Thanks all, I now have a copy of the service manual (Thanks Phonomac) and will be popping this open soon for a recap, then off to Phonomac for his help recalibrating and fine tuning.

Plans are to put it in a Panzerholz plinth.

Quite excited ☺️
 
Dear all,
Just purchased a DP-75 with DA-307 and DK-200. It has trouble holding speed but when running on a test-jig it is OK. Good news, but also weird. Will put the cover back on with tiny spacers to give the wires some room and see what happens…
Next step is re-capping and changing some tr‘s that have grubby feet. Should be no big issue.

The problem i have is with the platter: a previous owner has deleted the springs and replaced them with some foam inserts. I‘d like to restore the platter to its original state but cannot find the springs/dampers. Any thoughts?
 
Vrancd said:
Dear all,
Just purchased a DP-75 with DA-307 and DK-200. It has trouble holding speed but when running on a test-jig it is OK. Good news, but also weird. Will put the cover back on with tiny spacers to give the wires some room and see what happens…
Next step is re-capping and changing some tr‘s that have grubby feet. Should be no big issue.

The problem i have is with the platter: a previous owner has deleted the springs and replaced them with some foam inserts. I‘d like to restore the platter to its original state but cannot find the springs/dampers. Any thoughts?
Click to expand...
Foam pads are a standard feature of the platter assembly.
 
Hello,
Just bought a DP-80. A faint, brief humming sound can be heard coming from the motor when it is turned on or off. The speeds are normal. This noise is not audible through the speakers. Is this normal? Does it need any adjustment?
 
Al Casey said:
Hello,
Just bought a DP-80. A faint, brief humming sound can be heard coming from the motor when it is turned on or off. The speeds are normal. This noise is not audible through the speakers. Is this normal? Does it need any adjustment?
Click to expand...
Have you disassembled, cleaned and lubed the motor? If not, I would start there. There are pic's with details in posts in this thread.
 
Hi all, thanks for your reassuring comments!

Still a little puzzled: the upper platter is attached to the main platter through 3 metal strips, each with 5 little hex-bolts. The middle one is the one that connects the two platters. Can someone tell me why there are 5 hex’s?

Also: It feels not logical to tighten the middle one fully as this would prevent the two platters to move and it would make it one platter.

Btw: Good news is the speed is still ok.
 
Vrancd said:
Hi all, thanks for your reassuring comments!

Btw: Good news is the speed is still ok.
Click to expand...
Cleaning and fresh lube for the motor bearings/thrust-plate & oil retention washer is still a good idea. Just like an oil change in you car is a good idea............
 
The three metal strips work like car shock absorbers. But, to complete the restoration, you should also replace the neoprene tires on the circumference of the lower platter that act as resonance stoppers. It was Denon's philosophy to create a shock-absorbed system (but not too much) for its turntables. Even the supplied tonearm was damped at the base, and it's the same on the latest turntable from the company.
 
The platter is solved. Thanks for the advice.

Question: the horizontal bearing of the DA-307 has some play. It is not rattling but the play is there. Is there any way to adjust it? I disassembled the arm as far as i dared but did not find a way to adjust the bearing from the top. The service manual is not detailing the bearing assembly.
 
The DA307 has two side screws that hold two pins that fit into the bearings. You need to unscrew them and then adjust the pins to reduce unwanted movement, and then put the screws back without tightening them too much, otherwise the arm stiffens. If you really want to do things perfectly, the bearings would need to be cleaned of centuries-old dirt...
 
Hello Alda, are you referring to the horizontal (left/right) or the vertical bearing?
The play is on the horizontal-movement, so it is concerning the bearing that is in the arm pillar.
I would expect an adjustment-nut/screw on the top of the yoke but it is not there. Maybe adjustment can be done from below but that means the connector must move first (?).
 
I don't remember and I don't think there are screws to adjust the vertical pin. It seems to me that it's a cylinder inside another cylinder. But I could be wrong since I haven't seen one in a long time.
 
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