I just found a S120 on craig's list for cheap...25.00$
now I would like to do some up grading. there are a few solid state parts im not familiar with the way they look. I have a few pictures as is just opened the radio up. I know of "bumble bee caps" but im looking for the selenium diode ...there is a black with silver sides that looks like it is the correct place for it to be this but no ID on it ... there in the pic under the speaker transformer and BBcap , those rectangle resistors ( 3) black with silver ends? power connection there as well . will the 1n4007 diode be the correct replacement? ordered a cap kit from hayseed has the multi cap paper that is on top of board as well, that has not been replaced , by those pink caps...