[TechAssist] RCA M#pro-sw220p Subwoofer (standalone)

Does anyone have a diagram for this unit? It is a stand alone subwoofer RCA 
used to sell to connect to a surround or a sub out on the early Home Theater 
televisions. It is the large ported box with a internal 200 watt amp. 

Originally it  wouldn't go into standby when it didn't have signal and it would 
moan or thump every now and then. But it did work when a signal was applied, 
however the customer complained that after it ran a while it would shutdown. I 
played it for 3 hours shaking the rivets off of the building and it never shut 
down, so I opened the amp and saw that something was poured in it. I cleaned 
the input board and one of the power transistors looked like it was leaking 
through some corrosion from collector to ground. Let dry and now it doesn't 
matter if I have signal or not it goes to standby and even if it isn't in 
standby it doesn't amplify anything. 

Really could use a diagram or if anyone ever saw one of these and could give me 
some common causes. 

Thanks in advance

Jason
Mouton's Electronics


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