Replacing the old incadescent lamps with LED assmblies in McIntosh
power amplifiers.  Are there any articles on this subject, or are
there any companies who can perform this service?

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Clarification of Question by freecam-ga on 25 Aug 2004 02:39 PDT

McINTOSH MC-150 POWER AMPLIFIER:  Replacing the front panel and power
meter incadescent lamps with LED's.  Are there any published articles
on this subject, or are there any individuals or companies who perform
this service?  An aftermarket kit perhaps?

Can't help you with your specific request, but why would you want to? 
Modifying the amp in this way would greatly diminish its resale value.
 The original bulbs are readily available, use just a tiny amount of
power, and provide a warm glow that LED's bright colors won't match.

Just my 2¢...

Thank you, Charlie.  I value your opinion and I basically agree with
you.  However, I have no intention of ever selling the unit.  It
really comes down to the proverbial pain-in-the-butt factor of having
to keep removing and disassembling the amp, unsoldering the blown
bulbs, soldering in new ones, reassembling and reinstalling it.  After
7 years of ownership this proceedure is getting a bit tiresome and I'm
not getting any younger.

-freecam

Unless the lamps actually perform some secondary function (highly
unlikely, though not unheard of) why not just replace them with
suitable LEDs. Some incorporate resistors and are actually intended
for incandescent replacement. All colours are now available, including
white. Glue them in. Only point to note is that LEDs are a bit
sensitive to soldering iron failure when the legs are stressed because
the internals move -- thermoplastic package.

Electronics store can advise on suitable alternatives, but generally
most LEDs are designed to run at 20 or 30 milliamps max.

Best