Denial

I'm looking at the boards of the 2 vic-20s I have. The first one is dead but the problem may be the chip in the metal cage, labeled MOS 6560-101 4681. The board is 324003, 1981.

On the 2nd Vic-20, I can't find the board number, but it has the 4 pin power connector and the power switch that goes up/down. This board also has a metal cage area and inside it is a similar chip. Both sockets are labeled UB7, but the chip in the 2nd board is labeled 6560-101 0383
Are these chips interchangeable or are they specific to their respective boards?

Hi there

yes the are the same the first chip was made in week 46 1981
the 2nd was made in week 03 1983
you can swap them round in fact that is the vic's video and sound generator

good luck