Techdas AF3P issue

joeling

Well-Known Member
Jan 8, 2014
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I took delivery of a new Techdas AF3P just before CNY. Noticed that the transport bolts were yanked from the power supply / pump unit upon receipt. Reported to my dealer and was told to try it anyway. I was surprised that the unit still worked and was total silent / no vibration on the touch. Set up & things were running.

A couple of weeks ago, I mounted a Phasemation PP2000 (see other thread) and noticed a low undulating hum when the needle hit a spinign record. I thought it was the cartridge but realised that this 'hum' was the result of the vibration transmitted by the TT motor to the chassis to the armbase to the arm and to the cart.

So, upon further checking, noticed that the power supply / pump unit is also vibrating where it was totally silent in earlier months. The TT motor unit is also vibrating.

Has anyone experienced this ? Under normal operation, the TT motor unit should be vibration free right ? The power supply / pump unit should also be free of vibration right ? I am worried that the TT motor is defective or maybe the power supply / pump was already not to spec as a result of handling and slowly caused the motor to be damaged.

Anyway, after moping around for a couple of days, I decided to installed the 'S' rubber feet to bring the AF3P to AF3P'S' spec. These feet with integral very compliant rubber compound is a revelation. Vibration to the chassis of the TT is very much reduced. No more hum from the PP2000 cart. However, the TT motor & power supply unit / pump still vibrate. Chasing my dealer ...
 

djsina2

Well-Known Member
May 31, 2019
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Even with my AF5 I felt the pump/PSU was totally silent and vibration free. Certainly had no hum issues with any cartridges. Did you take the cover off and look inside?
 

TLi

Well-Known Member
May 27, 2016
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The power supply and pump unit contains two motors for the float and vacuum.

The motors rotate pistons to move air. There will be some vibrations. It should not affect the tonearm.

The motor should not vibrate if it is setup correctly. I suggest you check the horizontal level and belt tension. Try to keep the tension of the belt as low as possible, it should reduce the vibration
 

mtemur

Well-Known Member
Mar 26, 2019
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I think the compressor unit is damaged. IMHO the reason for that is shipping the unit without transport screws on. it will start to make noise and eventually reach to a point it could no longer lift the platter. the compressor/power supply unit should be changed with a new one. same will apply if the motor unit is shipped without transport screws too but motor unit is less prone to damage.
 
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joeling

Well-Known Member
Jan 8, 2014
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Gents,

Thanks for your insights. I think it is clear that the power supply / pump unit has deteriorated due the issue resulting from transportation. I am unaware that there are transport screws for the motor unit. Will have to have a look. Already adjusted such that the belt is more loose therefore taking longer to stabilize to required speed. Platter seems to be floating without any ill effect when powered on though.
 

thekong

Well-Known Member
May 10, 2012
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I am not familiar with the Techdas, but if they are similar to the Micro in arrangement, you may want to stop playing the turntable until the issue is solved! If the pump unit suddenly stop working when the platter is still turning, it may cause the platter to crash down on the bearing and damage it! Just a friendly reminder
 
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XV-1

Well-Known Member
May 24, 2010
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What has the Australian distributor said?

They are outstanding and will fix the issue.
 

audioblazer

Member Sponsor
May 14, 2010
714
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Malaysia
So glad I bought a Kuzma XL DC and not a Techdas that have all of these additional components that can go wrong !
I have AFO for abt 9/10 years. always on standby & not a hint of problem . How is that for reliability , Met Nishikawa when he was in Msia . Spoke thru translator. Until today , the translator still response to my email when I have any question . Thats 1st class Customer Service .
 

shakti

Well-Known Member
May 9, 2015
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Cologne, Germany
What type of solution do you expect from a forum?

If you want to solve a potential AF3P issue, the local distributor should be involved.
the distributor than will involve the manufacturer, if appropriate.

I believe, that your situation can be cleared soon with their professional help.
 
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joeling

Well-Known Member
Jan 8, 2014
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Before we let this get out of hand, My dealer & factory has always been very supportive and responsive. I am seeking advice from my fellow enthusiasts on your experience. No knocking on factory or dealer on my part if I was not clear prior.

Anyway, my dealer just informed me that the new power supply / vacuum unit will be shipped next week. Once I install the replacement unit, then we will study the motor situation.
 
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shakti

Well-Known Member
May 9, 2015
1,215
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Cologne, Germany
Anyway, my dealer just informed me that the new power supply / vacuum unit will be shipped next week. Once I install the replacement unit, then we will study the motor situation.
This is, what I would expect as service and which has happened to one AF3P owner in Germany as Service as well.

Sometimes the most easiest way to find a potential failure is just exchange with a proofed part and compare.
 

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