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sloper

Sad tale of lost post.

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Goodaye all

 

Got a sad tale of lost post.

Purchased a Sansui AU717 that needed a volume pot, no problem found a NOS one in Croatia.

Got stuff off this guy before so trust isnt a issue.

Paid extra for tracking and insurence and should have had it in a week.

 

Tracked it to Germany, went back forth through customs and has now dissapeared.

That was 8 weeks ago.

A search started 2 weeks ago with no word so far.

l am hoping it got put in sea mail by mistake and will get here eventurally.

 

l'll get my money back thats not the problem, l have  a AU717 that is junk without that pot.

These pots are made from unobintainium so another new or used is slim.

 

Had car parts lost from Germany before and parts from America sent via Austria.

 

Oh wanted Sansui AU717 volume pot.

 

regards Bruce

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Ah bugger Bruce - sorry to hear that!

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A pot lost in the post?  One postulates potentially arriving posthumously.

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I have a 719 that was considering parting out, which would have the same volume control.

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20 minutes ago, Kaynin said:

A pot lost in the post?  One postulates potentially arriving posthumously.

quantity of posted pot lost in post yet to be determined

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This is a headache for d.i.y. repairers and service technicians alike:-  the non availability of critical parts. I looked up the schematic for the AU 717 and the volume potentiometer that is used is a 4 gang item with two sections of150 k ohm ( tapped for a loudness cct ) and two sections that are 5 k ohm.  The use of previously used parts is fraught with problems   apart from just  obtaining one. For technicians , a used part that proves to be faulty after  installation is not good for a business reputation despite the work being at the request of a client with the full knowledge that it may not prove to be successful. A better solution for sloper would be to look at using a 4 pole switched attenuator (  23 steps or more ) of the type where the resistors are accessible. The nearest equivalent to the 150k  ( log ) value should be purchased along with a 2 pole version with a value of 5k.  The switch banks can be interchanged to make up the replacement volume control and also by metering the old pot., the tapping point for the loudness function can be implemented by soldering to the appropriate resistor junctions. That is the  better solution to  fix this old Sansui amplifier.

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A loudness contour arrangement is implemented by providing a connection to the resistor element of a volume potentiometer at a selected resistance value , dependant on the actual circuit  design. Sometimes the tapping point  is indicated on the pot.,  but in some cases measuring with an ohm meter is the only way to find the tapping point. The switched attenuator kit is of the type that can be utilised, although you will find it easier if you   purchase  pre-wired items which cost only a little more. The picture of the kit version shows that the switch banks can be removed from the assembly and that is the reason for obtaining a two pole  (5k) switched attenuator for the purpose of interchanging the sections. If you do not have the original volume control then perhaps someone can help with  establishing the resistance of the tap.

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Goodaye all

 

Well German Post has lost my NOS pot for my Sansui AU717.

Seemed it was deemed dangerous looking and may have been destroyed.

Unbelievable.

 

Got my money back but thats not the point l now have a amp that is junk.

 

So angry!!!!!

 

 

regards Bruce

 

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14 minutes ago, sloper said:

Goodaye all

 

Well German Post has lost my NOS pot for my Sansui AU717.

Seemed it was deemed dangerous looking and may have been destroyed.

Unbelievable.

 

Got my money back but thats not the point l now have a amp that is junk.

 

So angry!!!!!

 

 

regards Bruce

 

 

Re-order it but request they ship using Fedex or UPS.

 

Andy

 

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