Exciting News for JCM2000 Owners!

We are thrilled to announce the upcoming release of a replacement main board for the iconic Marshall JCM2000 amp series, including models DSL50, DSL100, TSL100, and TSL122.

Why You Need This Upgrade:

As beloved as they are, these amps are showing their age, and the main PCB often deteriorates due to heat. The most common issue is bias drift caused by high voltage conduction to the bias circuit, leading to EL34 output tubes overheating and premature failure. Unfortunately, there’s no practical way to completely repair these boards, and Marshall no longer provides replacements. But fear not!

Introducing the Ultimate Solution:

We have developed a superior replacement board with several key enhancements.

Upgraded Features:

• Optimized PCB Track Placement: Eliminates all paths shared by high voltage and bias circuit to prevent interference.
• PCB Slots: Added to prevent cross-conduction at the valve socket.
• Uprated Diodes in DC Heater: Equipped with 3A rated diodes for enhanced durability.
• Discrete Diodes: Replaces the monolithic bridge rectifier to improve airflow around components.
• Larger Heater Circuit Copper Areas: For better heat dissipation.
• High-Quality FR4 Board: Ensures longevity and reliability.
• Low Impedance Ground Plane: Reduces noise for a clearer sound.
• Enhanced AC Heater Connection Paths: Improves performance and eliminates crosstalk.
• Uprated Anode Resistors: From 1/2W to 2W for greater reliability.
• Upgraded Film Capacitors: Rated to 630V for improved durability.

Significant Benefits:

• Resolve Preamp Hum Issues: Caused by PCB conduction when hot, with upgraded 3A diodes in the DC heater—crucial for inrush current when cold.
• Noise Reduction: Achieved through a low impedance ground plane and improved AC heater connections.
• Enhanced Component Life: With uprated anode resistors and high-quality FR4 board.

Easy Integration:

• Same Connector Numbers and Placements: Ensures seamless installation.
• Consistent Fixing Points: For easy setup and minimal hassle.

Availability:

Stay tuned for pricing updates and availability. Let’s bring your beloved Marshall JCM2000 amps back to their full glory with these state-of-the-art replacement boards. This product is exclusivley availabel online from us.

Your JCM2000 will relaibly rock on for years to come!

Note:

Marshall Amplification does not endorse this product.  It is an entirely independently developed product. Marshall JCM2000 is a trademark of Marshall AmplificationLtd.