Mark Perry
New Member
I am a big fan of the sta-120b. I have 4 of them, one of which has been basically on since 1973. An occasional uninformed house guest will shut it off but that is soon remedied. It's ironic that one of Radio Shack's sales bits for this receiver was the plug in boards for ease of servicing. I have had no issues in 45 years of near continuous use beyond replacing the slide volume controls and the dial lights. I do have a Radio Shack published service manual as well as the Sam's MHF-52 which detail the alignment procedures as well as parts lists and board layouts with complete circuit diagrams. The RS document is a little more comprehensive. One thing I have discovered is that the serial number ink stamped on the chassis has no apparent bearing on the serial number sticker on the bottom of the unit. There has been some discussion about the output power. The service manual states this to be 30 watts per channel.