I posted these questions in the "Kitchens" forum, but then it was pointed out to me that they might belong here instead. Apologies for double posting:

OVEN BROILER:

The broiler element in the top oven of my double oven used to work fine. Now it heats up partway, but it no longer gets fully hot. It never turns red, for instance, and food placed under it does not really cook. The top oven still bakes with no problem. The bottom oven works fine.

Do you think I need to replace the broiler element? Or is the problem somewhere else? Is this a DIY fix?

Thanks!

SUB-ZERO FRIDGE LIGHT:

I have a Sub-Zero 511 fridge in my kitchen, of indeterminate age. The previous owners installed it, and we've lived there since 2006. The lights inside the fridge have stopped working.

Over a period of a few months, the fridge light became intermittent. Sometimes it would be off, but fiddling with the switch would cause it to come on. Then it quit completely.

I took the plastic cover off to find that this fridge has four specialty bulbs. All of them had turned black. I ordered and installed all new replacement bulbs. The fridge still won't light up.

This suggests to me that something may be wrong in the switch assembly. Is this a DIY fix? If anyone has any guidance in disassembling a Sub-Zero light switch, I'd be grateful.