• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Sansui AU-919 Needs Love.

That is a disappointment, sad really.
I did remember that an AK member was parting out an AU-919.
May be worth to check it out?
Assil said:
View attachment 2385550 View attachment 2385551 View attachment 2385552 View attachment 2385553 View attachment 2385554 View attachment 2385555
Hi David,
I have one new toroidal transformer for the AU-919 available as well as most of the boards unused as well. The only challenge is to ship it out of my country due to the current postal restrictions. View attachment 2385550
Click to expand...
 
GrisPato said:
That is a disappointment, sad really.
I did remember that an AK member was parting out an AU-919.
May be worth to check it out?
Click to expand...

You have a good memory, it is over a year ago so I would be surprised if it is still available but @Assil may see this and let me know fur sure, or I will message him.
Thanks for the suggestion.
 
GrisPato said:
That is a disappointment, sad really.
Click to expand...

Interesting post that you link to. That is actually the unit I now have. Would have been nice if he mentioned a bad transformer when he sold it. Not to worry I may have bought it anyway just for the fun of it.
 
Alex22 said:
Interesting post that you link to. That is actually the unit I now have. Would have been nice if he mentioned a bad transformer when he sold it. Not to worry I may have bought it anyway just for the fun of it.
Click to expand...
Ok, really, mmh, would have been decent for sure!o_O
 
Decided to take a proper look at the transformer before I put her back together (so I don't loose any screws etc) and stick it in a cupboard until I have a solution for the transformer.

It is easy to see that on the left side that whatever potting compound was used has been melted away by hight heat for a presumably extended period.
I don't think I will be taking it apart further and rewinding it.:)
P1040229.JPG
 
I got the package today and just opened it. I have had my eye out for a replacement toroidal transformer for the 919 for the last 2 years and a couple of weeks ago saw a listing that gave me pause for about 2 minutes while I tried unsuccessfully to talk some sense into my addled mind. The listing wasn't for the transformer but for a complete but damaged unit.Here is the description from the seller:

"This unit was damaged in moving and sat in a basement for some thirty years. When being carried it was banged into a door post and the selector switch was damaged inside. I cleaned it up and checked it out. It works on the tape inputs that bypass the damaged board. It sounds quite excellent. The schematics show separated power supplies for left and right channels, like two monoblocs in one case. The wattage rating is very understated as was Sansui's policy. The tape inputs and the line amps (bass and treble) work but the phono stages will not work without repair.
The sound is super clean and tight, it can be repaired or used as a power amp with the rear amp inputs. The volume knob was missing and it is set internally for 120volts."

$400 lighter and a few weeks later I now have a second 919. From the description the transformers must be working so between the 2 units I should have a fully functioning one. I am going to end up having paid $1000 for the 2 919's plus well over $200 for the parts for the recap/restoration. So even if everything goes perfectly I will have spent maybe $1300 for a fully restored 919, far more than originally planned.

So anyway I have to go and take the cover off and see if I have shot myself in the foot or not.
 
peterott said:
I bet you can get a bit of your money partly back by completely dismembering the donor unit.
Click to expand...
Absolutely I could bring the expense down to a reasonable level and should consider that. However I rarely sell anything but usually end up giving away things other people may enjoy but I don't need anymore. And the donor unit may be itself virtually complete apart from the transformer so who knows if parts turn up over the next few years.........................
Anyway am getting ahead of myself, I would be more than happy with one fully working 919 and a parts unit in the cupboard.
 
Haven't gotten to the insides yet but some pics of the well packed 919. The faceplate is better than I expected but the corners would need touching up, the cover is scratched up with some rust on the sides, but I have much better condition pieces on the other unit anyway.
 

Attachments

  • 20250211_132612.jpg
    20250211_132612.jpg
    92.6 KB · Views: 15
  • 20250211_132624.jpg
    20250211_132624.jpg
    101.8 KB · Views: 15
  • 20250211_133219.jpg
    20250211_133219.jpg
    78.6 KB · Views: 15
  • 20250211_133222.jpg
    20250211_133222.jpg
    75.8 KB · Views: 15
  • 20250211_133226.jpg
    20250211_133226.jpg
    85.5 KB · Views: 15
  • 20250211_133229.jpg
    20250211_133229.jpg
    94.3 KB · Views: 15
Put it on the dim bulb tester and prayed. Powers up and comes out of protection. Feeling good about the output transistors, just need to hook it up and confirm sound is being produced. Hopefully tomorrow.
Assuming that the output transistors are good I will be taking them out and using the ones that came with the first 919. Those Toshiba's will be fine for testing purposes, no idea how good a replacement they are in general though. Better to keep the originals safe for now.
 

Attachments

  • P1030975.JPG
    P1030975.JPG
    76.5 KB · Views: 11
I'm getting sound out of the pre-amp outputs so am going to call the output transistors good and get them out of there until all other work is completed.
 
I really wanted to replace the transformer in the 919 I have had for the last couple of years as it is in good visual shape, but there could be other unknowns after replacing the transformer. On the other hand I have a working 919, in need of an F-2835 equalizer amp board but in rougher visual shape, dirty and as an added bonus has some rust on the outside. But it does work and I think it makes sense for me to keep things simple.
 
Better change the fuse for a 5A one before I forget, easy thing to overlook when changing voltages.
 
You must log in or register to reply here.
Back
Top Bottom