CASE # 876500 . 12/03.2025 . MCINTOSH MA6100. No sound from right channel.
Customer shorted speaker wires and lost right channel.
After troubleshooting found 2 fuses for right channel are blown. Output transistors dead too. Rest of parts tested ok. This model use hard to find 132-128 Motorola NPN transistors . MJ15022 transistors are perfect substitute. Installed, tested , no need any adjustments.