• A high-resolution product image featuring a set of 10 replacement electrolytic capacitors for audio equipment repair, arranged neatly against a clean white background. The collection includes: Top Row: Four large black cylindrical capacitors with silver-toned tops and long metal lead wires. Bottom Row: Six smaller red and white capacitors, also featuring radial leads.
  • Marantz service manual cover with technical diagram and table of contents on a white background
  • A technical schematic diagram showing the component layout for the Marantz Power Supply PCB and Protection PCB. The image features a detailed black-and-white architectural view of the circuit boards, with specific component locations, trace paths, and reference numbers labeled for repair and identification purposes. The "Protection PCB" section is highlighted on the right, showing the specific area where the protection circuit capacitors are located.
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Marantz PM-Series Protection Repair Kit

Marantz PM-Series Protection Repair Kit

£19.95
£19.95
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Compatible Models: PM7000 | PM7200 | PM8000

The Issue

Symptom: The amplifier immediately triggers "Protection Mode" upon power-up.

The Cause: This failure is typically traced to degraded electrolytic capacitors on the Power Supply and Protection Circuit Board. While some might call it a flaw, it was simply a matter of the era; Marantz originally equipped these units with 85°C-rated capacitors—the industry standard at the time—which naturally lose their effectiveness after years of heat exposure.

The Solution: Our Premium Upgrade Kit

We’ve curated a specialised selection of components to not only repair your amplifier but also future-proof it. This kit replaces the original parts with high-end, 105°C-rated premium capacitors, offering significantly higher thermal resistance and longevity.

Kit Contents:

  • Full set of premium-grade 105°C electrolytic capacitors.
  • Selected for low ESR (Equivalent Series Resistance) to ensure stable power delivery.
  • Illustrated Repair Guide: Step-by-step instructions featuring a detailed component location map to ensure a seamless installation.
  • Digital Service Manual: A FREE PDF copy of the original factory service manual for complete technical reference. (email address required)
QTY µF VDC ℃ TYPE
4 47 25 105 RADIAL
2 1 63 105 RADIAL
2 470 63 105 RADIAL
1 1000 35 105 RADIAL
1 220 25 105 RADIAL

Note: Upgrading to 105°C components ensures your Marantz remains reliable even under heavy use, effectively resolving the protection-circuit "false alarms" caused by aged components.

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