Which Sansui gear has the "glue problem"

Tinnkindling

OLD SCHOOL

• Apr 12, 2014

• #1

The problem of corrosive glue used in vintage Sansui components shows up in many of the threads. As a died in the wool Sansui fan, and one who is likely to purchase more Sansui components, I'd sure like to hear from AKers who can tell which models have the problem.

Thanks for any information on this.

 

D

DougBrewster

AK Subscriber

Subscriber

• Apr 13, 2014

• #2

I can tell you that my 8080DB had it ('76 build) as do both my 9090DBs from
'77 and '78

fyi..

 

Hyperion

Roobarb & Custard

Subscriber

• Apr 13, 2014

• #3

From my experience.

AU-317
AU-517
AU-717
AU-719
AU-9900 - some - (and by implication AU-11000)
AU-919
AU-D11 II
AU-X701

That should do for a starter list.

 

Last edited: Apr 13, 2014

AUD101

Parsley The Lion!

• Apr 13, 2014

• #4

Also:
AU-417
AU-519 (see Finnogangela post)

Reference to Scott Thompson's (scottrt) album pages
AU-819
AU-D9
AU-D11
BA-3000

 

avionic

" Black Knights "------- F-15 " Wizard "

Subscriber

• Apr 13, 2014

• #5

7070's , 8080's , 9090's, 9900Z off the top of my head.

 

Robisme

Sansui Enthusiast

• Apr 13, 2014

• #6

Just did a G-5500 with the glue problem.

I think it's safe to say that any Sansui should be checked for the glue.:yes:

Rob

 

stopkidding

Well-Known Member

• Apr 13, 2014

• #7

Yikes. I have two with the dreaded glue issue. The AU D11 Mk 1&2 :-(

 

VMilkRecords

Music Patrician

• Apr 13, 2014

• #8

what do you mean by the "glue problem"? What's wrong with it? My AU-7900 seems ok.

 

Hyperion

Roobarb & Custard

Subscriber

• Apr 13, 2014

• #9

If your AU-7900 has any of the Sansui component 'glue' in it, you'll soon know if it is ok or not. :sigh:

Sansui used this glue to secure larger components to PCB's to ensure they didn't shake themselves loose (in transit mainly). Sansui assembler's were not too careful where it went - so it got slobbered all over the place :thumbsdn:

Annoyingly this glue goes corrosive over time and eats components and their leads. It is alleged to have a characteristic 'smell', (variously described) and is very difficult to remove neatly. Oh and there seems to be a couple of different formulations of the bloody stuff...

Acetone and patience are your friends.

Nuff said?

 

Last edited: Apr 13, 2014

VMilkRecords

Music Patrician

• Apr 13, 2014

• #10

does it go all brown/yellowish like mold?

 

jblmar

JBL & marantz

• Apr 13, 2014

• #11

Good thread and timing as I have a 517 on the bench at the moment in for repair & recap.:thmbsp:

 

LBPete

Rolling Along

Subscriber

• Apr 13, 2014

• #12

From what I've seen, Sansui used different batches or types of glue over time. Some is more reactive than others. Whether you have a problem with it or not also depends on factors like humidity and heat. Most boards I've seen with the glue don't show any signs of corrosion. That said, I've also seen boards that have component leads eaten through with corrosion.

Bottom line, if you are doing work on the board, remove the glue. If the unit works and there is no sign of corrosion (look very carefully) I wouldn't disturb it just to remove glue.

- Pete

 

kevzep

Its all about the Music

• Apr 13, 2014

• #13

I also had it in my G7700, G9000DB, G22000......

 

stopkidding

Well-Known Member

• Apr 13, 2014

• #14

Having gone through an au-7500 recently, I am happy to report that there is no glue in those

 

jd-audio

Well-Known Member

• Apr 19, 2014

• #15

My B-2101 also has the glue problem

-John

 

vigman

SUBSCRIBER

• Apr 19, 2014

• #16

Au20k, ba-2000

 

vigman

SUBSCRIBER

• Apr 19, 2014

• #17

Gooo

Can range from VERY DARK brown to a VERY light tan /yellow

 

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Daunia 70

Lunatic Member

• Apr 19, 2014

• #18

Sansui AU-419

 

anytune

Super Member

• Apr 19, 2014

• #19

Hyperion said:

Annoyingly this glue goes corrosive over time and eats components and their leads. It is alleged to have a characteristic 'smell'...

Click to expand...

Can you please describe this smell? My G-8700DB often has a freon-like smell after it's on for 10 minutes or so. I keep a small fan on the vents to help dissipate heat, but the smell persists. Is this a glue issue? Is any action warranted? (I have cleaned it thoroughly inside and out; deodorizers such as OdoBan have no effect.)

 

Robisme

Sansui Enthusiast

• Jun 8, 2014

• #20

Another one to add to the list. Z-5000X.:yes:

It got to about 5 components on mine.

Rob