Selected Teflon wire is provided with all service work. Teflon coated wire will not burn and is a better replacement then plastic coated wire. When original parts are not available, specialty companies such as Mercury Magnetics make an exact clone of the Marshall Plexi mains and output transformers. For this particular amplifier we fabricated and constructed the power supply filter board, as was the original design of this year Plexi. A single filter capacitor is found topside and is seen below the mains transformer.
Severe corrosion is common place with older British amplifiers.
The chassis to the left was completely stripped and cleaned of all corrosion. Taking all the grounds to one location in the amp rather then different points within the chassis provided an improved ground system. This will effectively eliminate ground loops and signal grounding problems. The ground bus that is located on the filter capacitor board will greatly reduce hum that is caused by different ground points in a high gain amplifier. Our experienced, professional staff of technicians provide a complete and thorough technical service for your amplifiers.