Tapeheads Tape, Audio and Music Forums
Universal Capstan Motor

Go Back   Tapeheads Tape, Audio and Music Forums > General Audio Discussions > Turntables and Vinyl

Turntables and Vinyl Discuss all facets of vinyl, including players, stylii, care and maintenance, and of course... records.

Donate to Tapeheads!
Reply
 
Thread Tools Display Modes
  #1  
Old 04-20-2017, 11:23 PM
DeloArias DeloArias is offline
TapeHeads Newbie
 
Join Date: Apr 2017
Posts: 4
Need Help: Yamaha TT-400U canīt play records

Hello everyone, I write this post to search for help with my turntable.
I bought it some time ago, but it doesnīt work properly. When you put the Lp the arm aproachs it to play it, but it never falls into the groves and goes back, standing near the disc and never playing it
Here is a video to show the problem: https://www.youtube.com/watch?v=E6UjCJHg4ls

My knowledge about electronics itīs minimal and i canīt fin any information that helps me to fix this so I ask here for help.

Thanks for reading and enjoy the music
  #2  
Old 04-21-2017, 01:41 AM
svampen's Avatar
svampen svampen is online now
In loudness we trust
 
Join Date: Oct 2016
Location: Sweden
Posts: 247
I would start with the internal mechanics. There are a lot of levers, springs and cogwheels that work together to enable the automatic features.

Clean out old lubricant and give the inside some general TLC.
  #3  
Old 04-21-2017, 04:50 AM
john from seattle john from seattle is offline
Serious Tapehead
 
Join Date: Sep 2014
Location: Tacoma Washington
Posts: 1,995
Have you tried looking for a schematic? It may be available on hifi engine or down below at stereo manuals. Below the posts is a list of sponsors as links, just tap on the appropriate one to access their site.

Hifi engine e.com is free, you just need to register. Stereo manuals is a paid site, but the quality is so much better than hifi engine as hifi engine's scans are all over the place quality wise.

As said already, it's mechanical. You can also use this deck manually as well I'm sure. That would mean manually setting the arm down by hand instead.

I st likely needs old grease cleaned out and decreased with lubriplate 105, a quality grease that does not turn to glue like the old stuff does.

Good luck!
__________________


my system Kenwood KD12-RB turntable, SHURE M97xE cart, Muffsy PP3 phono pre, Receiver: Sherwood RX4030R, TEAC A4300SX R2R, Denon DCM-370 CD changer, Speakers: sansui SP1700 and in testing/restoration phase, Sansui SP-3000, eMachines PC for multimedia use and recently got a Nakamichi BX100 cassette deck
  #4  
Old 04-21-2017, 07:27 AM
JimTimP's Avatar
JimTimP JimTimP is offline
Serious Tapehead
 
Join Date: Jun 2016
Location: South West New Hampshire
Posts: 177
Have you tried a record not so badly warped? It looks like the cartridge gets hit by the warp and all stops.
__________________
Retired USAF, Solder Melter. Not to old to Learn, Teac X-2000R, Otari MX-5050 BIII-2 (X2) and BII-2H, Yaqin MC-100B Amp, SD-32A CD Player, Pro Ject Tube Box DS2 Phono Preamp, VPI Prime Signature, ADS & 16.5, Soundsmith Voice, Madisound Zaph ZRT 2.5 Speakers, Teac 2A Mixer and MB-20 Bridge, Nobsound Headphone Amp
  #5  
Old 04-21-2017, 12:25 PM
DeloArias DeloArias is offline
TapeHeads Newbie
 
Join Date: Apr 2017
Posts: 4
Quote:
Originally Posted by JimTimP View Post
Have you tried a record not so badly warped? It looks like the cartridge gets hit by the warp and all stops.
Yeah, jaja. Sorry for the warped record, but yeah I tried with some other (before and after this record) in so much better conditions, but it simply doesnīt work. The arm doesnīt fall on the groves, it only tease me xD.

Quote:
Originally Posted by john from seattle View Post
Have you tried looking for a schematic? It may be available on hifi engine or down below at stereo manuals. Below the posts is a list of sponsors as links, just tap on the appropriate one to access their site.

Hifi engine e.com is free, you just need to register. Stereo manuals is a paid site, but the quality is so much better than hifi engine as hifi engine's scans are all over the place quality wise.

As said already, it's mechanical. You can also use this deck manually as well I'm sure. That would mean manually setting the arm down by hand instead.

I st likely needs old grease cleaned out and decreased with lubriplate 105, a quality grease that does not turn to glue like the old stuff does.

Good luck!


Quote:
Originally Posted by svampen View Post
I would start with the internal mechanics. There are a lot of levers, springs and cogwheels that work together to enable the automatic features.

Clean out old lubricant and give the inside some general TLC.
I search on HifiEngine but they only have the owners manual, not the service :(. Still i will make the posible for buy the service manual on the StereoManuals (i think that they got it, but i will ask). And i will do the cleaning and the lubricant change, I want to make it work.
Really, Thanks :D
  #6  
Old 04-21-2017, 01:20 PM
svampen's Avatar
svampen svampen is online now
In loudness we trust
 
Join Date: Oct 2016
Location: Sweden
Posts: 247
Hm. On the other hand, I read this TT have some automatic detection of the record size.
In the vid it seems to go beyond the first track and then slowly out again, like it is looking for something.
The behaivour might be caused by it is not "seeing" the record?

Might be something blocking the sensor? It is probably some sort of light/reflection sensor around the area where the needle is.
  #7  
Old 04-21-2017, 09:27 PM
DeloArias DeloArias is offline
TapeHeads Newbie
 
Join Date: Apr 2017
Posts: 4
Quote:
Originally Posted by svampen View Post
Hm. On the other hand, I read this TT have some automatic detection of the record size.
In the vid it seems to go beyond the first track and then slowly out again, like it is looking for something.
The behaivour might be caused by it is not "seeing" the record?

Might be something blocking the sensor? It is probably some sort of light/reflection sensor around the area where the needle is.
A sensor? Were did you read it? And were is it? I never saw it. Let me check but, it has a button were the plate goes, and it gets pressed when the LP is on top. Thatīs the sensor?
  #8  
Old 04-22-2017, 10:38 AM
archeo archeo is online now
Serious Tapehead
 
Join Date: Jul 2014
Location: EU/SK
Posts: 160
Quote:
Originally Posted by DeloArias View Post
A sensor?..it has a button were the plate goes, and it gets pressed when the LP is on top. Thatīs the sensor?
Yes that is it. To me the behavior seemed too, like the size sensing is not working.
__________________
__________________
Tape Decks: 2x Marantz SD-60, 2x Philips FC-870, Turntables: Philips F7610, Siemens RW666, Tesla NC452, Amp: self made, Boxes: active Visaton
  #9  
Old 04-22-2017, 11:27 AM
NEMOaudio's Avatar
NEMOaudio NEMOaudio is offline
Serious Tapehead
 
Join Date: Jun 2013
Location: Transylvania
Posts: 2,567
In stop mode try to push down the arm lifter with your finger, see if it goes down smoothly. If it was sitting unused the arm lifter might not work smoothly so you have to press it down several times before trying to play.

__________________
The Stereo Museum www.1001hifi.com

Last edited by NEMOaudio; 04-22-2017 at 12:00 PM. Reason: the picture
  #10  
Old 04-22-2017, 11:37 AM
john from seattle john from seattle is offline
Serious Tapehead
 
Join Date: Sep 2014
Location: Tacoma Washington
Posts: 1,995
Like everything else, if you don't use the gear for a long while, grease etc will dry up and seize and will require you to clean out and relube.

This also goes for the lift as it is either grease fitted, or hydraulic (a viscous oil inside a shaft with a plunger that forces the lift to be damped to slowly lower the arm) though many automatic players use a mechanically greased mechanism for raising/lowering the arm.
__________________


my system Kenwood KD12-RB turntable, SHURE M97xE cart, Muffsy PP3 phono pre, Receiver: Sherwood RX4030R, TEAC A4300SX R2R, Denon DCM-370 CD changer, Speakers: sansui SP1700 and in testing/restoration phase, Sansui SP-3000, eMachines PC for multimedia use and recently got a Nakamichi BX100 cassette deck
  #11  
Old 04-23-2017, 01:31 PM
DeloArias DeloArias is offline
TapeHeads Newbie
 
Join Date: Apr 2017
Posts: 4
Quote:
Originally Posted by archeo View Post
Yes that is it. To me the behavior seemed too, like the size sensing is not working.
Um... i donīt know. The mechanism seem to work well, the button get pressed but i donīt know...

Quote:
Originally Posted by NEMOaudio View Post
In stop mode try to push down the arm lifter with your finger, see if it goes down smoothly. If it was sitting unused the arm lifter might not work smoothly so you have to press it down several times before trying to play.

I tried pressing the arm lifter but is all the way down. I tried moving the adjusting screw but doesnīt do anything, then i try to lif it all the way up and I can but when I release it, the arm lifter falls all the way down.
Reply


Would you like to see your company or site here?  CONTACT US
For more Tapeheads affiliates and links, see the Links and Resources page.


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Heads on Yamaha decks? Yamaha. GF CF. gate28 Cassette 13 01-08-2017 08:15 AM
Yamaha KX-250 squealing on play phonik Cassette 7 01-20-2016 07:01 AM
482Z play circuit gain for repaired play head df_genius Cassette 0 11-20-2015 04:03 PM
Yamaha KX-393 play trim control norrie Cassette 13 09-09-2013 04:26 AM
Strange problem, records in stereo but only play right side Toshito Cassette 2 06-08-2013 10:22 AM


All times are GMT -7. The time now is 03:46 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright Đ2016, Tapeheads.Net. All rights reserved, no use of any element incorporated into this site without express written permission.