[Ron Ramirez]

Hi Dave

Answers inline...

1. I am replacing a cap in the radio, one that a former repairer used to do away with part 30 2079, the 8 mfd - 8 mfd condenser. The new caps I have to replace it with are blue colored 10uf caps, with a white arrow and a minus sign in the arrow. Question, does this arrow mean that the direction pointed in is the negative side of the cap? Further, the negative ends of these new caps apparently are to be tied together as a common ground or negative side, correct?

In most modern electrolytics, the arrow with the MINUS (-) sign points to the NEGATIVE lead of the electrolytic.

In your 620, yes, the two negative leads of the two 10 uF electrolytics will be connected together, and connect to B- (NOTE that they do NOT connect direct to ground!) at the top of resistor (70), with the center tap of the high voltage secondary, which is the B- source, also connected there.

2. I am replacing the part # 30 2118 condenser 16 mfd cap with a new blue 16uf cap. Can you give me some instructions on how to bypass the old can and put this new cap in the chasse?

For condenser (52), your 16 uF electrolytic, the POSITIVE lead connects to the junction of resistors (47), ( 48 ) and (49). See your schematic. The NEGATIVE lead of the 16 uF electrolytic connects to chassis ground.

49Stude63 gave you some excellent advice on rebuilding the electrolytics. If you do not feel comfortable with trying that yet, you may place the new electrolytics under the chassis at any convenient point; just be sure your work is neatly done, and that the old electrolytics are completely disconnected from the circuit!