Ques on Mcintosh and Power Meters

Are you talking about bulbs, or are you talking about "power meters"?
Yes, bulbs can be replaced yourself. Some are in sockets, some have to be soldered in (and removing the old ones by un-soldering). The biggest challenge is not to mess up the face glass by doing something stupid, and slipping with a tool, etc.
As far as LED's go, the older Mac gear is set up using the small light bulbs, not LED's.
If it really worry's you, you can always have a Mac dealer replace the bulbs for you. But I've changed a few myself, and it's not that big a deal.
Alan

I sent mine directly to Mcintosh as per them 'they are a pain to replace' referring to the bulbs. I had them do an overall check of the amp while it was there.

Why not just buy the Led's from mcintosh that they use on the new ones, and solder them in to replace the bulbs all together? Should be 2 wires just the same as the old bulb sockets, and will just draw even less power than the old bulbs that were in there.. Bulbs and the LED's are also just simple DC devices.. I would do this mod myself if I still had Mcintosh gear.

AudioClassics is working through the Mac line with led replacement kits. You may want to check for availability on your model.

"Which is better?" LED's!!!