• 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 5000

While waiting for my transistors I made one of these:

12" in a 1954 Karlson enclosure I made
 

Attachments

  • IMG_3617.jpeg
    IMG_3617.jpeg
    124.8 KB · Views: 12
jnl1105 said:
what are you working on?

also the Top solder point on the left picture middle (R815) is actually soldered to the red/orange top with a white wire on my 6013's
View attachment 3447235
Click to expand...
I have a sansui 5000 not an a or x version. It is in very good condition cosmetically but needs a full restoration. That speaker looks awesome do you have a stereo pair? What will you use them with?
 
For any 5000 series that came with either the F-1040 (5000) or F-1040-1 (5000A and early 5000X) the procedure is the same.
Judging from pictures 5000X that came from the factory with 6013 boards had a jumper between the left and right boards running to the solder pad shared between R807 and R811. For the replacement boards install that I've actually seen there is a jumper from the top red/orange lead to that solder pad, not R815. Note that the current supplied is the same in either case.
 
Thanks for the info. Apart from replacing these boards and replacing all the electrolytic caps is there any other components I should be looking to replace as a matter of course? Which model is your receiver?
 
roubo said:
Thanks for the info. Apart from replacing these boards and replacing all the electrolytic caps is there any other components I should be looking to replace as a matter of course? Which model is your receiver?
Click to expand...
Mine is a 5000 only so we have close to the same I think.

on another note mine doesn't have any wires between the boards.....
 
Guido57 said:
Note: this unit is up and running, just waiting on cosmetic work.
View attachment 3447425
Click to expand...

Yours seems to be the R01150 model as it has thermistor on the back plate. I wondered how that would look



Guido57 said:
Note: this unit is up and running, just waiting on cosmetic work.
View attachment 3447425
Click to expand...
The white wire
1741446890795.jpeg

Below the red lines show where my white wire goes that was on both boards when I got the unit

1741447566495.png

So there is supposed to a wire between the boards it seems and I even missed that..... so a wire is supposed to goto the start of where my white wire and land on the same point between the left and right channel and then where does the wire go as they are really indicated in the overall machine schematic on any of the 5000 version manuals I have and I think it was assumed (prior) to my attaining the unit that they just went to the top 75 volt point on the board.... Are they supposed to just be a jumper between the left and right channels?

1741448065877.png
 
roubo said:
I have a sansui 5000 not an a or x version. It is in very good condition cosmetically but needs a full restoration. That speaker looks awesome do you have a stereo pair? What will you use them with?
Click to expand...
I actually have an original single Karlson I use on my 66 Packard bell console
1741448707253.jpeg

1741449239647.jpeg1741448758172.jpeg


As for the 12" I just made I have the second ones wood nearly completely cut and ready to be put together. I had to make some alterations to the interior design as my 12" speakers have a wider frame that required a different setting of the speaker board...
 
Your white wire is connected to the same copper trace as the wire from the fuse, so that attachment is essentially equivalent.
No jumper is used between channels with replacement F-6013 boards, whether they are genuine Sansui or reproduction boards based on what I've seen. As I believe I said the jumper between channels is based on pictures of 5000X where the 6013 boards were installed at the factory. Don't know why but it's most likely that junction just needs the voltage delivered from the fuses. I would not add the jumper between channels, I never did and have successfully refurbished several units with both reproduction and genuine Sansui boards.
 
Guido57 said:
Your white wire is connected to the same copper trace as the wire from the fuse, so that attachment is essentially equivalent.
No jumper is used between channels with replacement F-6013 boards, whether they are genuine Sansui or reproduction boards based on what I've seen. As I believe I said the jumper between channels is based on pictures of 5000X where the 6013 boards were installed at the factory. Don't know why but it's most likely that junction just needs the voltage delivered from the fuses. I would not add the jumper between channels, I never did and have successfully refurbished several units with both reproduction and genuine Sansui boards.
Click to expand...
Thanks that is one less bit of confusion…
 
I just did some pics and stuff on my latest receiver I bought... a Harman Kardan AT-10 10 watt tube mono dual channel. It's on the tube amp page
 

I found a Wolverine with a L9-15, T-35, and the ch divider 35 in a huge folded horn folded read loaded horn JBL4530 Speaker I added the info on the speaker page. ​


IMG_0039.jpeg
 
Ok now back to our regularly scheduled programming.... So I now have the boards rebuilt and I believe everything is close if not correct 1/2 the voltage of the mains at 70volts (which I am at 50 instead of 70 and it won't go any lower. and the biasing milliamp draw.

I can not get a sound out from any source. what is a great way to find the cause of that...
 
So the voltage at the collectors of TR809 and 810 are at 50V and at TR807 and 808 are 70V?
And some actual information on the bias?

Great way? No, they're all a pain in the ass, but a basic oscilloscope can help you trace a signal and find out at what junction it disappears or distorts.
Did you replace the trim pots?
 
You must log in or register to reply here.
Back
Top Bottom