Circuits and Concepts is now offering a parts kit for replacing 23 failure-prone electrolytic capacitors on the MA-508 board to repair or refurbish classic CARVER THE RECEIVER, MXR-130 and MXR-150 receivers.
Electrolytic capacitors, especially those made in the 1980's, age poorly. They fail as open circuits, where they lose capacitance which can cause hum, loss of clarity and "punch," and add distortion. They can also become "leaky" and fail as short circuits. This type of failure can cause pops, distortion and power supply failures, that can kill the audio signal entirely.
"Re-capping" a receiver is commonly done for the following reasons:
The kit contains 23 replacement electrolytic capacitors. To assure highest reliability, the capacitors in the kit are from a premier manufacturer, have a high temperature rating (105 deg C), and when practical, higher voltage and high established lifetime. The kit includes replacements for all of the electrolytic capacitors on the MA-508 board, with the exception of the 8,200 and 10,000 uF high voltage caps, which are available on a separate listing.
A comprehensive installation and troubleshooting guide to aid in the repair and refurbishment of your receiver is included. The installation manual gives detailed instructions with photos, showing how to replace the capacitors. It includes a section on troubleshooting the power supply circuit, which is a common problem with the MXR receivers. The troubleshooting guide is highly valuable and not available anywhere else. The manual also shows how to clean the control potentiometers (volume, balance, tone, etc) and switches for continued, trouble-free operation. The installation manual is a full-color PDF document delivered via e mail.
This kit augments the Circuits and Concepts relay/trim cap/power supply resistor refurb kit, which addresses problems documented in Carver Service Bulletins.
The parts are brand new and meet or exceed the specifications of the original parts. The listing is for a parts kit only, not the complete receiver.
Whether you are repairing a receiver for a specific problem, or doing a general update and refurb, this parts kit is ideal for getting that prized receiver in shape for the next decade or two of service!
Special Bonus!!!
With your purchase, we'll include a FREE, professionally scanned PDF copy of THE RECEIVER Service Manual (the circuitry is virtually identical with THE RECEIVER, the MXR-130 & MXR-150). The Service Manual includes schematics, block diagrams, parts lists and setup instructions. Service Manual PDF will be delivered via e mail.
The parts can be replaced by a person with limited soldering skills. A soldering iron, solder wick and solder are needed to replace the parts. Use standard safety precautions (wear safety glasses, unplug the unit before soldering, good ventilation, etc) when working on your gear. When you're done soldering, always wash your hands, because solder contains lead. Please note that replacing components will fix the receiver only if those components was the problem to start with!
We offer the following parts for Carver receivers:
See our other listings for other interesting and helpful electronic solutions! Shipping is discounted for multiple purchases! Please send us a message if you have any questions. We've worked with Carver equipment for over 30 years. We love classic audio equipment, and want to help you get the most enjoyment out of your system! We also repair Carver equipment at our location. Let us know what you need!
Buyer to prepay with Paypal and pay $4.50 flat rate for shipping and professional packing (that means $3.95 per shipment regardless of the number of parts in the order--if e bay charges more, we promptly refund the excess charges). Additional shipping cost outside the US. Positive feedback will be left for successfully completed transaction.