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Author Topic: Sansui Receiver - Quick Patch Job  (Read 5989 times)

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Questhate

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Re: Sansui Receiver - Quick Patch Job
« Reply #10 on: January 18, 2012, 04:14:58 PM »
Quote from: RexAeterna on January 18, 2012, 09:25:32 AM
hum can be either the power supply, the power supply filter caps or possible your getting a ground loop on where the amp you have it plugged in at. do you have it directly in the wall? i always suggest plugging amps directly in the wall. you might not believe me but things like power strips and surge protectors are current/voltage limiters and will limit the amount the voltages/current the amp can draw when being worked and if push too hard you will start to blow circuits in the house. these older amps require and draw good amount of power even at idle. they might have the raw horse power for anything but draw lot of power from the wall socket.

you can also try to ground the amp with a 16 gauge or 14 gauge extension cord too. i use a heavy duty 14 gauge extension cords for my amps directly into the wall sockets. makes difference to me when running in class A with speakers under 4ohms nominal being pushed hard the sansui should be able to handle low impedance speakers pretty well cause i ran 3ohm loads off my 5000x before with no issues.

Hmm. I do have them plugged to the wall. Maybe I should have the caps checked then.

I should probably check if it does the same thing with speakers, or just the headphone out. Looking to get a pair of cheap Maggies when I eventually move to a bigger place.
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LFF

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Re: Sansui Receiver - Quick Patch Job
« Reply #11 on: January 18, 2012, 04:19:56 PM »
Hum is bad mmkay....

I have a vintage McIntosh receiver that has a bit of hum. I need to hand it off to Purrin....
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Re: Sansui Receiver - Quick Patch Job
« Reply #12 on: January 19, 2012, 01:19:50 AM »
If he can fix it, would that make him a hum dinger?  :P

womp womp womp
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Re: Sansui Receiver - Quick Patch Job
« Reply #13 on: January 19, 2012, 03:27:04 PM »
Ohhhh!!!!

I see what you did there!!!  8)
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CEE TEE

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Re: Sansui Receiver - Quick Patch Job
« Reply #14 on: January 31, 2012, 05:43:46 AM »
Awesome thread...yep- 5000A.  Military purchase.  W/hum.


Thanks, purrin!  It already shows promise with the HD 800.
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RexAeterna

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Re: Sansui Receiver - Quick Patch Job
« Reply #15 on: February 02, 2012, 06:32:19 AM »
i never once experience hum with all the vintage receivers and power amps i tried ever. must be luck on my part or something but all sansui's i heard had zero hum. just the audible known hiss from very high gain issues with very high sensitive headphones. speakers though,never. my 5000x has no humming or any issues on my part. still find it very clean sounding amp on my part,but then again mine of course has been brought up to spec like rest of my amps. bringing an amp up to spec makes world of difference. every time i get mine back from my tech they always sound better than ever and always ask what type of black magic he has been casting or what spells he's been chanting cause they sound so much better when i get my amps back from his work on them. these old amps do wonders for driving power hungry headphones as well as much as speakers. i don't know why.
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Re: Sansui Receiver - Quick Patch Job
« Reply #16 on: February 13, 2012, 07:50:45 AM »
so CEE TEE, hows your sansui going? gotten mine back few days ago. heres couple crappy pics.





works great! i just barely use it much anymore. good looking and sounding receiver though with good amount of power.
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Re: Sansui Receiver - Quick Patch Job
« Reply #17 on: July 27, 2013, 08:01:34 AM »
I know I'm reviving an old thread, but I actually just bought a Sansui 5000A off eBay. It has the new boards and looks to be in great condition. The seller seemed to know what they were taking about and were very descriptive of the product. I'm pretty excited to try it with my headphones and speakers. However, I'm curious...Is there anything I should check on the receiver when I get it to make sure it's working as best as it can? Any restoration tips or mods to consider?
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shipsupt

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Re: Sansui Receiver - Quick Patch Job
« Reply #18 on: July 27, 2013, 08:20:28 AM »
The vintage thread over at HF is quite good, you might consider checking in with those guys as they will know a lot about this specific receiver.  The real hard core fans will be over at Audiokarma.com

The basics, pop the cover and have a look around.  It it's dirty/dusty a good clean up with an electronic cleaner is a good idea.  Compressed air, if you have it, is also useful.  You want to be on the look out for components that look heat damaged, or capacitors that are starting to leak.  Those are things you might consider changing out.  As long as you are in there it's a good idea to give all the switches, pots, etc... a clean with some Deoxit.  This should take care of any scratchiness when changing volume etc..

Many will tell you that a complete recap is recommended, and the audiokarma guys will know it there are any other troubled components specific to this model.

That said, if you didn't pay a lot and things look pretty good inside, you don't need to do anything but listen.  These old receivers are typically really good headphone amps and do pretty well with speakers too!

Let us know how it sounds.
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Yeah, well, you know, that's just, like, your opinion, man.

Hands

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Re: Sansui Receiver - Quick Patch Job
« Reply #19 on: July 27, 2013, 08:53:16 AM »
Well, I did pay more for this particular listing than they were going for normally because the seller was very descriptive and seemed to be knowledgeable about the product. Part of his discription:

"The 5000A that I have for sale does indeed have the newer and safe F-6013 driver boards. The lights have been replaced so that all are presently working. The inside and outside have been thoroughly detailed, the switches and controls cleaned and lubricated with Caig's products.  All functions work perfectly, the sound output is clean, powerful and undistorted. "

It looked to be in very good condition based on the pictures. The first thing I do will absolutely be to listen to it, but I'm pretty new to vintage stuff like this and wanted to gather as much information as I can on the 5000A. I've already been browsing around the HF thread and have read some AK threads. It seems like the main issue is the boards, which the one I bought already had replaced with the newer model.

I'll be using it with my Mad Dog 3.2. I've heard they respond well to vintage receivers, which doesn't surprise me based on everything else I've read.
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