[klondike98]

Vince, I'm very new to this as well so there will be other more experienced folks who will provide information but that looks like what is called a candohm resistor. I only had the model 121 schematic to look at but looks like item #77 to me. Candohms are a resistor string mounted to the chassis for heat removal with taps at various resistance values. Replacing them is often done by removing the candohm and putting wire wound power resistors of the appropriate resistance and wattage on a terminal strip. Looks like its a pretty crowed spot on the chassis so perhaps some advice from someone who's worked on this model will help.
Cheers
Bob