Help, What is this stuff?

[joetech]

Ok, I know its stereo gear. For my school, I was asking for donations of any type of stereo equipment. A lady calls and I just pick the following up:
Technics SU G90 integrated AMP
Technics STK 50 tuner
Marantz 5010 cassette deck
I tried to get some info on the web but all I got were sites trying to sell me manuals or E-bay auctions with little info.
I don't even know if they work, nor did she. She rents several properties and these items were left behind in the last year or so. We assume they aren't hot.
The Technics don't have power cords but I have a compatable ones in the classroom. She sayes the Marantz works (ie came on)
Without going to too much trouble, does anyone have any idea at to the power ratings etc of these items? If they dont work I was just going to haul them over to the dumpster. The amp has a pretty heavy power supply so I guess it must crank out the watts.

 

[joetech]

follow up

I had a chance to check out these components now.
The Marantz deck seems to be dead, won't power up
The tuner works very well.
The Amp powers up OK but the Main speakers, both A and B left and Right doesn't work. However, this has Dolby surround sound and the two 'rear' speakers work OK. I checked to see if there were any fuses blown. The only glass fuses were VAC and were OK. So I have something that works but I don't know for how long. Also this unit has a cooling fan that isn't working. I suppose it could have a thermosat.
Anyone have any idea how to get the main speakers working?
Is this thing about to die?

 

[mulester7]

I had a chance to check out these components now.
The Marantz deck seems to be dead, won't power up
The tuner works very well.
The Amp powers up OK but the Main speakers, both A and B left and Right doesn't work. However, this has Dolby surround sound and the two 'rear' speakers work OK. I checked to see if there were any fuses blown. The only glass fuses were VAC and were OK. So I have something that works but I don't know for how long. Also this unit has a cooling fan that isn't working. I suppose it could have a thermosat.
Anyone have any idea how to get the main speakers working?
Is this thing about to die?

.....Joe, it could be boat anchor time.....