Realistic STA-2150 Receiver

[Francis55]

Just picked up a Realistic STA-2150 AM/FM Receiver, any idea what it might be worth? I picked it up, along with a cheaper Scott receiver, for a total of less than $20.The Realistic looks to be in very good shape but I won't know that until I pick it up tomorrow.

 

[Squlliam100]

I collect realistic receivers. At the moment it's not worth much, but it is a rare one. Took me months to find the sta2150

 

[memofer]

I have the same receiver, with one channel out. does anybody have a schematic for it? please send it my way. thanks,

 

[simplebrad]

Vintagehifi.com (no affiliation) appears to have info on Sta 2100 I am not sure sure if this will be the same as your unit

 

[slowhands951]

I have the same receiver, with one channel out. does anybody have a schematic for it? please send it my way. thanks,

The schematic is posted on HIFI Engine: https://www.hifiengine.com/manual_library/realistic/sta-2150.shtml
This is from 1990, so age and handling is a factor in whether it works after all these years. These have excellent specs. I've seen these with one channel out, and it was cold solder joints on the audio driver IC, Sanyo STK3102III, which runs hot and cracks solder joints due to thermal cycling. Sometimes just reflowing the pins fixes it, sometimes you have to swap the IC, a rare bird now. Sanyo no longer makes it, and there are counterfeit parts from China that may not be good substitutes. Typical problem with gear this old. Someone did a design for a replacement using discrete parts, but I don't know if it works well, maybe there is more history on it now. Here is a pointer to that:

STK3102 Replacement - EasyEDA open source hardware lab

In EasyEDA open source hardware lab, open source square pools all kinds of electrical design engineerings together to realize resource sharing easily.

oshwlab.com