03-12-2007, 07:50 PM
Hi: I found a model 620 at a recent auction. It was needing help but for $9 what can you expect? I've replaced all of the block and filter caps with the exception of #66 on the schematic. It shows #6287 DU which I believe is a double .3 cap. I may not be reading this correctly but I can only find where this block cap connects to the #65 resistor. I'm new at this so I'm sure I'm reading it wrong. Where does the second cap connect?
Also, the speaker wires were not connected under the chassis. There are 3 lead wires but I'm not sure where the connections are made. Again if I'm reading the schematic correctly one lead looks like it connects to the + side of the 8 electrolytic and the field coil, another lead looks like it connects from resitor #65 to the output transformer. Where would the third connection be? Sorry for the long winded questions.
Also, the speaker wires were not connected under the chassis. There are 3 lead wires but I'm not sure where the connections are made. Again if I'm reading the schematic correctly one lead looks like it connects to the + side of the 8 electrolytic and the field coil, another lead looks like it connects from resitor #65 to the output transformer. Where would the third connection be? Sorry for the long winded questions.
