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I was wondering if it was at all possible to tell what diodes are needed to replace the zener diodes that are in the power supply? I have one in my intellivision that corroded apart and wasn’t sure if I should try replacing it, or if I should just buy a parts intellivision and just replace the board alltogether.

*edited to add an image

skyler, which one do you want to replace

Update skyler, C9 is actually a non-polarized capacitor 0.1 uF 25V ; CR5 is a IN4001 Diode. If instead of C9 you meant CR9, that is a Zener IN746. Hope this helps, good luck. Needs Clarification not exactly sure where you are describing. Are you looking for the components under the heatsink? From your description, it does sound more and more like capacitors. Use a graphics editor to mark the location on your image and repost it, or use my diagram and name the designators.