Hello from Croatia :D

I would welcome some info and a service manual for Sansui A80 integrated amplifier.

I got a hold on one and sound wise I like it very much. Combined it with non-oversampling dac it made cd's much softer and more pleasent. Also, I like the loudness pot even if its not really an audiophile thing. Great for low volumes. I would like to make some changes with caps and perhaps add a few safety thingies.

I am not an electrician and english is not my native tounge but I'll try to translate what somebody posted in a forum here. The man used to make a living recapping au-517's for a while.
(for 517)
"If your changing elco's already you should change the smaller elcos in the preamp and foil filters, change the zeners in the auxiliary rectifier, change the 150R resistors in the predriver stage and scrub the damn glue that likes to corrode components from the pcb."

For a80 he says that basicly the same should apply but the gain from investing is arguable because the amp is of lesser quality.

:scratch2:

I'd like to make changes to make it more reliable, be safe to use at high level (dc protection) and add a source direct switch.

Hello from Croatia :D

I would welcome some info and a service manual for Sansui A80 integrated amplifier.


Here is the service manual http://www.clarkeworks.com/sansui/manuals/Sansui_A-60_A-80.pdf


I got a hold on one and sound wise I like it very much. Combined it with non-oversampling dac it made cd's much softer and more pleasent. Also, I like the loudness pot even if its not really an audiophile thing. Great for low volumes. I would like to make some changes with caps and perhaps add a few safety thingies.

I am not an electrician and english is not my native tounge but I'll try to translate what somebody posted in a forum here. The man used to make a living recapping au-517's for a while.
(for 517)
"If your changing elco's already you should change the smaller elcos in the preamp and foil filters, change the zeners in the auxiliary rectifier, change the 150R resistors in the predriver stage and scrub the damn glue that likes to corrode components from the pcb."

For a80 he says that basicly the same should apply but the gain from investing is arguable because the amp is of lesser quality.

:scratch2:

I'd like to make changes to make it more reliable, be safe to use at high level (dc protection) and add a source direct switch.

I would question spending any money on an A-80 beyond fixing it if it doesn't work. These early-80's units were Sansui's low-end units and are not TOTL in any way, in my opinion. I have an R-50 which I bought just so I could see what the build quality and engineering was like. They are strictly budget quality units.

Paul

By the way, DropH, welcome to AudioKarma and the [Exclusively Sansui] forum. :thmbsp:

I didn't notice in that message that this was your first visit! Don't be put-off by my lack of enthausiam for the A-80 -- it's still a Sansui so treat it well.

Paul

DropH, welcome to AudioKarma. Like Paul said, the A80 is not one of Sansui's finer receivers. So it may be hard to find someone that has done the type of modifications you are planning. It is a good inexpensive receiver to experiment with so don't be discouraged by any lack of response to your questions. Start with replacing the electrolytic capacitors. That should make a noticeable improvement. Doing that will also give you the opportunity to remove the dreaded Sansui Glue.

Good luck with it and let us know your progress.

- Pete

My wife has an A 60/T80 combo in her crafts room and loves it. And around here she can have her choice of some pretty good gear.
I have a couple of the A and T 80 amps and tuners, the amp is a fair performer for being on the edge of being bpc.
Watch out for the check nut behind the volume control on the amp, for some reason they want to get loose and the volume knob feels like the pot has broken.
I hate those twist lock speaker connetors. And if the backlight goes out in the tuner good luck, it's an 18 v 300 ma wedge base and they are made of unobtainium.
Casey

I'll try to translate what somebody posted in a forum here. The man used to make a living recapping au-517's for a while.


Well, that would be me :) except i made my living restoring amps, not just 517s :) although i did have perhaps 7 or 8 517s pass through my hands, and more 717 and 710s...

You can contact me about the A80 on our local forum, however, as you can see, the gain in quality from tweaking an A80 is dubious. Still, it depends on how much time and money you are willing to invest, and if nothing else, you may gain some solid knowledge for relatively small investmebnt out of that whole experiment.

welcome neighbor! good to know that i'm not the only member from croatia =]

as far as info goes, if you can't find it here, it probably doesn't exist.

Oy!

I put the thing back together and it worked! I settled just with changing the speaker terminals. Those old ones were shreding to pieces in my hands and the former owner pulled out wires out of the chassis and put some sort of clamps at the end (or whatever its called in english).

I was thinking of trying to connect one of the inputs straight to the volume pot but I gave up cause I could not figure out the pot - it has 8 conestions - some sort of loudness trick and its connected to a small pcb. The pcb has 7 wires leading to the main board (set of 3 and 4)?