Picked this up several months ago for $10 . Finally taking some time to assess what I have as I really need to thin out the herd. Opened her up and bringing her up on a Variac. This may not be neccesary as it appears that much of the electrolytics have been upgraded as can be seen by the nudie. Many of the tubes also look new. All orange drops underneath. Warming at about 80v and all lights are on. Signal meter is working and sound is great through cans. Selector switch needed some jiggling to get both channels working. Can't remember if I sprayed her yet. DC is dead on zero in both channels. Letting her sit some. Needs a light dusting. Hoping to try her out on the Wharfedales or the possibly Klipsch Fortes in the near future. Looks like a keeper.

A keeper, that rusted piece of junk with light bulbs?

Don´t think so, just send it to me, I make a living off selling rusted metal scraps.

Jorge

Too heavy. The cost to ship is more than scrap is worth and the lights are probably hazardous waste. Wouldn't want to get you in trouble.

I've heard good things about the Sansui 1000a once its functioning optimally. I'd be interested in knowing your impressions after you've listened to it for awhile.

May take awhile. Couldn't get any sound out of the speakers. Futzed around some and let some magic smoke out . Luckily, it was the speaker impendence switch. It was loose when I examined it after I bought it must have puked its guts out. Took the bottom off and found one of the rockers loose inside. Put it back on the variac and brought it up slowly. Get good sound out of the cans so hopefully no output component popped.

I hope you get it going, I think you will be pleasantly surprised at the sound of that old machine. good luck with it, I enjoy mine immensely when I got it hooked up.

elroy

Going shopping for the switch. Hope that's all it is. Luckily I happened across a manual with some LPs before I found the receiver! Dumb luck.

Great score!
Does your tuner work ok?
I recapped mine a while back with fancy Sonicaps and Black Gates. The amplifier section works great but the tuner has no MPX separation...

I'm no tuner expert so I guess I'll live with the problem. Don't listen to radio much anyway...

Tuner works fine. Working when I first plugged it in and still does after some of the magic smoke came out (listening through headphones) so hoping that the only thing that arced was the speaker imoendence switch and that nothing else was fried. It was serviced long before I bought it and most of the caps were replaced. Power caps are Elnas. Signal meter is the only light out.

I kept the power supply Elnas since they -*test*-('")ed fine. No hum on actual use. All the other small signal caps and the power supply diodes were replaced. I should have left the old caps on the MPX tuner board or at least checked the tuner operation before recaping. Now, I'll never know if the tuner was working fine before messing with it. The cheap phenolic board is hard to work on.

Here's a shot of the innards of mine after the recap. Notice the 10 ohm cathode resistors I added to each 7591 to protect the output trannies in case of a tube short.

Here's another shot showing the output stage area in more detail.

The 10 ohm 1/4 watt cathode resistors can be ID by the black insulation on their leads.

These are also useful to determine bias current by measuring the voltage across them with a suitable VOM. This way you can match your tubes quite easily. It also helps that the Sansui has individual bias pots for each 7591.

By comparison the Fisher 500C has fixed bias and the Dynaco Stereo 70 only one bias pot per channel.

The 1000A is my favorite tube receiver. Having owned a Fisher 500C, I find the Sansui superior in every respect.

It is the crowing achievement of the vacuum tube era for regular consumer electronics. It incoporates pretty much everything that had been learned on tubes up to that point. It even has provisions for plug in Moving Coil transformer coils, a feature unheard-of at the time!

hakka,
have you made any headway into getting this unit back in service?

I finally got the switch. Now I just need to find some down time and hope when it shorted that it didn't take anything else out.

and its a fantastic sounding receiver as well. i am using Elroy's 1000a to drive the highs on the AR-9's and am loving the sound. its well worth the time, money and effort to repair.