34 Years In Business Repairing McIntosh Receivers

"No one knows Mcintosh Audio like we do.
If you’ve been told it cannot be done or that parts are unavailable, give us a try."
 

Vintage McIntosh receivers and tuners we specialize in repairing:

McIntosh MAC 1500

Made: 1965–1967

About: First stereo receiver, hybrid solid-state preamp, tube output, FM tuner, 30W/ch.

McIntosh MAC 1700

Made: 1967–1973

About: Hybrid solid-state preamp/power amp, tube tuner, 40W/ch.

McIntosh MAC 1900

Made: 1973–1978

About: All solid-state, 55W/ch, AM/FM tuner, phono stage.

McIntosh MAC 4100

Made: 1978–1985

About: Solid-state, 75W/ch, direct-coupled amp, FM muting.

McIntosh MAC 4300V

Made: Early to mid-1980s

About: ~100W/ch, multi-room, versatile inputs.

McIntosh MAC 4200

Made: 1980–1987

About: Solid-state, 75W/ch, 5-band EQ, AM/FM tuner.

McIntosh MAC-4275

Made: 1978–1983

About: 75W/ch, solid-state, dynamic sound, robust tuner.

McIntosh MAC 4280

Made: 1980–1985

About: Solid-state, 85W/ch, high-quality phono, AM/FM tuner.

McIntosh MX117

Made: 1977–1981

About: Solid-state preamp/tuner, advanced AM/FM, clarity.

McIntosh MXA60

Made: 2008–2013

About: Compact system, 75W/ch, AM/FM tuner, CD player.

McIntosh-MX132

Made: Late 1990s–early 2000s

About: A/V control center, advanced surround, signature sound.

McIntosh-MR78

Made: 1970–1978

About: High-performance FM tuner, sensitivity/selectivity.

McIntosh MX121

Made: 2010–2014

About: Home theater processor, Dolby TrueHD/DTS-HD, phono stage.

McIntosh MX119

Made: Early 2000s

About: A/V preamp/processor, surround sound, vintage quality.

McIntosh MX120

Made: 2003–2008

About: A/V control center, Dolby Digital/DTS, home theater.

Mcintosh-MVS3

Made: 1980s

About: Video selector/audio processor, home theater setups.

McIntosh MX110

Made: 1960–1966

About: Tube-based stereo preamp/tuner, warm/detailed sound.

McIntosh MX112

Made: 1971–1973

About: Solid-state preamp/tuner, AM/FM, clean sound.

McIntosh MX113

Made: 1970–1974

About: Solid-state AM/FM preamp/tuner, versatile inputs, clear audio.

McIntosh MX114

Made: 1970–1974

About: Solid-state stereo preamp/tuner, AM/FM, robust build.

McIntosh MX115

Made: 1972–1976

About: Solid-state preamp/tuner, AM/FM, detailed sound, sleek design.

McIntosh MX118

Made: 1980s

About: Solid-state preamp/tuner, AM/FM, high-fidelity audio.

McIntosh MX130

Made: 1990s

About: A/V control center, surround sound, warm audio, versatile inputs.

This information is based on McIntosh Labs, repair communities, Home Theater Review Pro, Lang Design Inc., Audio Brands, and X posts discussing restoration techniques.


Note: WE DO NOT SELL COMPONENTS: Every repair is unique; what resolves an issue for one unit may not apply to others, especially if there are discrepancies in component Value or underlying quality concerns. The following is a recommendation, not a guaranteed solution.

👑 Pro Technician Secrets

1. The "McIntosh Sound" Preservation

  • Use Quality capacitors in all audio signal paths
  • Keep original carbon film resistors - don't replace with metal film (changes sound)
  • Original solder contains tin/lead - use 63/37 solder for repairs
  • Don't "upgrade" coupling caps beyond 10% of original value

2. Diagnostic Shortcuts

  • Quick audio test: Use 1kHz tone at -10dB, check for symmetrical clipping
  • Power supply ripple test: Use scope on AC coupling, should be <5mVp-p
  • Thermal issues: Use IR thermometer - no component should exceed 70°C
  • Ground loop test: Disconnect all inputs, if hum remains → internal ground issue

3. Value-Added Services Customers Love

  • Install quiet cooling fans with thermal control
  • Replace all RCA connectors with gold-plated
  • Add external fuse access for easy replacement
  • Include 5-year warranty on capacitor replacement
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